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class RTDetrMultiscaleDeformableAttention(nn.Module):
"""
Multiscale deformable attention as proposed in Deformable DETR.
"""
def __init__(self, config: RTDetrConfig, num_heads: int, n_points: int):
super().__init__()
kernel_loaded = MultiScaleDeformableAttention is not None
if is_torch_cuda_available() and is_ninja_available() and not kernel_loaded:
try:
load_cuda_kernels()
except Exception as e:
logger.warning(f"Could not load the custom kernel for multi-scale deformable attention: {e}")
if config.d_model % num_heads != 0:
raise ValueError(
f"embed_dim (d_model) must be divisible by num_heads, but got {config.d_model} and {num_heads}"
)
dim_per_head = config.d_model // num_heads
# check if dim_per_head is power of 2
if not ((dim_per_head & (dim_per_head - 1) == 0) and dim_per_head != 0):
warnings.warn(
"You'd better set embed_dim (d_model) in RTDetrMultiscaleDeformableAttention to make the"
" dimension of each attention head a power of 2 which is more efficient in the authors' CUDA"
" implementation."
)
self.im2col_step = 64
self.d_model = config.d_model
self.n_levels = config.num_feature_levels
self.n_heads = num_heads
self.n_points = n_points
self.sampling_offsets = nn.Linear(config.d_model, num_heads * self.n_levels * n_points * 2)
self.attention_weights = nn.Linear(config.d_model, num_heads * self.n_levels * n_points)
self.value_proj = nn.Linear(config.d_model, config.d_model)
self.output_proj = nn.Linear(config.d_model, config.d_model)
self.disable_custom_kernels = config.disable_custom_kernels
def with_pos_embed(self, tensor: torch.Tensor, position_embeddings: Optional[Tensor]):
return tensor if position_embeddings is None else tensor + position_embeddings
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
encoder_hidden_states=None,
encoder_attention_mask=None,
position_embeddings: Optional[torch.Tensor] = None,
reference_points=None,
spatial_shapes=None,
spatial_shapes_list=None,
level_start_index=None,
output_attentions: bool = False,
):
# add position embeddings to the hidden states before projecting to queries and keys
if position_embeddings is not None:
hidden_states = self.with_pos_embed(hidden_states, position_embeddings)
batch_size, num_queries, _ = hidden_states.shape
batch_size, sequence_length, _ = encoder_hidden_states.shape
total_elements = sum(height * width for height, width in spatial_shapes_list)
if total_elements != sequence_length:
raise ValueError(
"Make sure to align the spatial shapes with the sequence length of the encoder hidden states"
)
value = self.value_proj(encoder_hidden_states)
if attention_mask is not None:
# we invert the attention_mask
value = value.masked_fill(~attention_mask[..., None], float(0))
value = value.view(batch_size, sequence_length, self.n_heads, self.d_model // self.n_heads)
sampling_offsets = self.sampling_offsets(hidden_states).view(
batch_size, num_queries, self.n_heads, self.n_levels, self.n_points, 2
)
attention_weights = self.attention_weights(hidden_states).view(
batch_size, num_queries, self.n_heads, self.n_levels * self.n_points
)
attention_weights = F.softmax(attention_weights, -1).view(
batch_size, num_queries, self.n_heads, self.n_levels, self.n_points
)
# batch_size, num_queries, n_heads, n_levels, n_points, 2
num_coordinates = reference_points.shape[-1]
if num_coordinates == 2:
offset_normalizer = torch.stack([spatial_shapes[..., 1], spatial_shapes[..., 0]], -1)
sampling_locations = (
reference_points[:, :, None, :, None, :]
+ sampling_offsets / offset_normalizer[None, None, None, :, None, :]
)
elif num_coordinates == 4:
sampling_locations = (
reference_points[:, :, None, :, None, :2]
+ sampling_offsets / self.n_points * reference_points[:, :, None, :, None, 2:] * 0.5
)
else:
raise ValueError(f"Last dim of reference_points must be 2 or 4, but got {reference_points.shape[-1]}")
if self.disable_custom_kernels or MultiScaleDeformableAttention is None:
# PyTorch implementation
output = multi_scale_deformable_attention(
value, spatial_shapes_list, sampling_locations, attention_weights
)
else:
try:
# custom kernel
output = MultiScaleDeformableAttentionFunction.apply(
value,
spatial_shapes,
level_start_index,
sampling_locations,
attention_weights,
self.im2col_step,
)
except Exception:
# PyTorch implementation
output = multi_scale_deformable_attention(
value, spatial_shapes_list, sampling_locations, attention_weights
)
output = self.output_proj(output)
return output, attention_weights
|
class_definition
| 39,325 | 44,990 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,700 |
class RTDetrMultiheadAttention(nn.Module):
"""
Multi-headed attention from 'Attention Is All You Need' paper.
Here, we add position embeddings to the queries and keys (as explained in the Deformable DETR paper).
"""
def __init__(
self,
embed_dim: int,
num_heads: int,
dropout: float = 0.0,
bias: bool = True,
):
super().__init__()
self.embed_dim = embed_dim
self.num_heads = num_heads
self.dropout = dropout
self.head_dim = embed_dim // num_heads
if self.head_dim * num_heads != self.embed_dim:
raise ValueError(
f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:"
f" {num_heads})."
)
self.scaling = self.head_dim**-0.5
self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
def _reshape(self, tensor: torch.Tensor, seq_len: int, batch_size: int):
return tensor.view(batch_size, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
def with_pos_embed(self, tensor: torch.Tensor, position_embeddings: Optional[Tensor]):
return tensor if position_embeddings is None else tensor + position_embeddings
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_embeddings: Optional[torch.Tensor] = None,
output_attentions: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
"""Input shape: Batch x Time x Channel"""
batch_size, target_len, embed_dim = hidden_states.size()
# add position embeddings to the hidden states before projecting to queries and keys
if position_embeddings is not None:
hidden_states_original = hidden_states
hidden_states = self.with_pos_embed(hidden_states, position_embeddings)
# get queries, keys and values
query_states = self.q_proj(hidden_states) * self.scaling
key_states = self._reshape(self.k_proj(hidden_states), -1, batch_size)
value_states = self._reshape(self.v_proj(hidden_states_original), -1, batch_size)
proj_shape = (batch_size * self.num_heads, -1, self.head_dim)
query_states = self._reshape(query_states, target_len, batch_size).view(*proj_shape)
key_states = key_states.view(*proj_shape)
value_states = value_states.view(*proj_shape)
source_len = key_states.size(1)
attn_weights = torch.bmm(query_states, key_states.transpose(1, 2))
if attn_weights.size() != (batch_size * self.num_heads, target_len, source_len):
raise ValueError(
f"Attention weights should be of size {(batch_size * self.num_heads, target_len, source_len)}, but is"
f" {attn_weights.size()}"
)
# expand attention_mask
if attention_mask is not None:
# [seq_len, seq_len] -> [batch_size, 1, target_seq_len, source_seq_len]
attention_mask = attention_mask.expand(batch_size, 1, *attention_mask.size())
if attention_mask is not None:
if attention_mask.size() != (batch_size, 1, target_len, source_len):
raise ValueError(
f"Attention mask should be of size {(batch_size, 1, target_len, source_len)}, but is"
f" {attention_mask.size()}"
)
attn_weights = attn_weights.view(batch_size, self.num_heads, target_len, source_len) + attention_mask
attn_weights = attn_weights.view(batch_size * self.num_heads, target_len, source_len)
attn_weights = nn.functional.softmax(attn_weights, dim=-1)
if output_attentions:
# this operation is a bit awkward, but it's required to
# make sure that attn_weights keeps its gradient.
# In order to do so, attn_weights have to reshaped
# twice and have to be reused in the following
attn_weights_reshaped = attn_weights.view(batch_size, self.num_heads, target_len, source_len)
attn_weights = attn_weights_reshaped.view(batch_size * self.num_heads, target_len, source_len)
else:
attn_weights_reshaped = None
attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training)
attn_output = torch.bmm(attn_probs, value_states)
if attn_output.size() != (batch_size * self.num_heads, target_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(batch_size, self.num_heads, target_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.view(batch_size, self.num_heads, target_len, self.head_dim)
attn_output = attn_output.transpose(1, 2)
attn_output = attn_output.reshape(batch_size, target_len, embed_dim)
attn_output = self.out_proj(attn_output)
return attn_output, attn_weights_reshaped
|
class_definition
| 44,993 | 50,292 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,701 |
class RTDetrDecoderLayer(nn.Module):
def __init__(self, config: RTDetrConfig):
super().__init__()
# self-attention
self.self_attn = RTDetrMultiheadAttention(
embed_dim=config.d_model,
num_heads=config.decoder_attention_heads,
dropout=config.attention_dropout,
)
self.dropout = config.dropout
self.activation_fn = ACT2FN[config.decoder_activation_function]
self.activation_dropout = config.activation_dropout
self.self_attn_layer_norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_eps)
# cross-attention
self.encoder_attn = RTDetrMultiscaleDeformableAttention(
config,
num_heads=config.decoder_attention_heads,
n_points=config.decoder_n_points,
)
self.encoder_attn_layer_norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_eps)
# feedforward neural networks
self.fc1 = nn.Linear(config.d_model, config.decoder_ffn_dim)
self.fc2 = nn.Linear(config.decoder_ffn_dim, config.d_model)
self.final_layer_norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_eps)
def forward(
self,
hidden_states: torch.Tensor,
position_embeddings: Optional[torch.Tensor] = None,
reference_points=None,
spatial_shapes=None,
spatial_shapes_list=None,
level_start_index=None,
encoder_hidden_states: Optional[torch.Tensor] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = False,
):
"""
Args:
hidden_states (`torch.FloatTensor`):
Input to the layer of shape `(seq_len, batch, embed_dim)`.
position_embeddings (`torch.FloatTensor`, *optional*):
Position embeddings that are added to the queries and keys in the self-attention layer.
reference_points (`torch.FloatTensor`, *optional*):
Reference points.
spatial_shapes (`torch.LongTensor`, *optional*):
Spatial shapes.
level_start_index (`torch.LongTensor`, *optional*):
Level start index.
encoder_hidden_states (`torch.FloatTensor`):
cross attention input to the layer of shape `(seq_len, batch, embed_dim)`
encoder_attention_mask (`torch.FloatTensor`): encoder attention mask of size
`(batch, 1, target_len, source_len)` where padding elements are indicated by very large negative
values.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
"""
residual = hidden_states
# Self Attention
hidden_states, self_attn_weights = self.self_attn(
hidden_states=hidden_states,
attention_mask=encoder_attention_mask,
position_embeddings=position_embeddings,
output_attentions=output_attentions,
)
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
hidden_states = residual + hidden_states
hidden_states = self.self_attn_layer_norm(hidden_states)
second_residual = hidden_states
# Cross-Attention
cross_attn_weights = None
hidden_states, cross_attn_weights = self.encoder_attn(
hidden_states=hidden_states,
encoder_hidden_states=encoder_hidden_states,
position_embeddings=position_embeddings,
reference_points=reference_points,
spatial_shapes=spatial_shapes,
spatial_shapes_list=spatial_shapes_list,
level_start_index=level_start_index,
output_attentions=output_attentions,
)
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
hidden_states = second_residual + hidden_states
hidden_states = self.encoder_attn_layer_norm(hidden_states)
# Fully Connected
residual = hidden_states
hidden_states = self.activation_fn(self.fc1(hidden_states))
hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training)
hidden_states = self.fc2(hidden_states)
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
hidden_states = residual + hidden_states
hidden_states = self.final_layer_norm(hidden_states)
outputs = (hidden_states,)
if output_attentions:
outputs += (self_attn_weights, cross_attn_weights)
return outputs
|
class_definition
| 50,295 | 55,104 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,702 |
class RTDetrPreTrainedModel(PreTrainedModel):
config_class = RTDetrConfig
base_model_prefix = "rt_detr"
main_input_name = "pixel_values"
_no_split_modules = [r"RTDetrConvEncoder", r"RTDetrEncoderLayer", r"RTDetrDecoderLayer"]
def _init_weights(self, module):
"""Initalize the weights"""
"""initialize linear layer bias value according to a given probability value."""
if isinstance(module, (RTDetrForObjectDetection, RTDetrDecoder)):
if module.class_embed is not None:
for layer in module.class_embed:
prior_prob = self.config.initializer_bias_prior_prob or 1 / (self.config.num_labels + 1)
bias = float(-math.log((1 - prior_prob) / prior_prob))
nn.init.xavier_uniform_(layer.weight)
nn.init.constant_(layer.bias, bias)
if module.bbox_embed is not None:
for layer in module.bbox_embed:
nn.init.constant_(layer.layers[-1].weight, 0)
nn.init.constant_(layer.layers[-1].bias, 0)
if isinstance(module, RTDetrMultiscaleDeformableAttention):
nn.init.constant_(module.sampling_offsets.weight.data, 0.0)
default_dtype = torch.get_default_dtype()
thetas = torch.arange(module.n_heads, dtype=torch.int64).to(default_dtype) * (
2.0 * math.pi / module.n_heads
)
grid_init = torch.stack([thetas.cos(), thetas.sin()], -1)
grid_init = (
(grid_init / grid_init.abs().max(-1, keepdim=True)[0])
.view(module.n_heads, 1, 1, 2)
.repeat(1, module.n_levels, module.n_points, 1)
)
for i in range(module.n_points):
grid_init[:, :, i, :] *= i + 1
with torch.no_grad():
module.sampling_offsets.bias = nn.Parameter(grid_init.view(-1))
nn.init.constant_(module.attention_weights.weight.data, 0.0)
nn.init.constant_(module.attention_weights.bias.data, 0.0)
nn.init.xavier_uniform_(module.value_proj.weight.data)
nn.init.constant_(module.value_proj.bias.data, 0.0)
nn.init.xavier_uniform_(module.output_proj.weight.data)
nn.init.constant_(module.output_proj.bias.data, 0.0)
if isinstance(module, RTDetrModel):
prior_prob = self.config.initializer_bias_prior_prob or 1 / (self.config.num_labels + 1)
bias = float(-math.log((1 - prior_prob) / prior_prob))
nn.init.xavier_uniform_(module.enc_score_head.weight)
nn.init.constant_(module.enc_score_head.bias, bias)
if isinstance(module, (nn.Linear, nn.Conv2d, nn.BatchNorm2d)):
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
if module.bias is not None:
module.bias.data.zero_()
if hasattr(module, "weight_embedding") and self.config.learn_initial_query:
nn.init.xavier_uniform_(module.weight_embedding.weight)
if hasattr(module, "denoising_class_embed") and self.config.num_denoising > 0:
nn.init.xavier_uniform_(module.denoising_class_embed.weight)
|
class_definition
| 55,107 | 58,351 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,703 |
class RTDetrEncoder(nn.Module):
def __init__(self, config: RTDetrConfig):
super().__init__()
self.layers = nn.ModuleList([RTDetrEncoderLayer(config) for _ in range(config.encoder_layers)])
def forward(self, src, src_mask=None, pos_embed=None, output_attentions: bool = False) -> torch.Tensor:
hidden_states = src
for layer in self.layers:
hidden_states = layer(
hidden_states,
attention_mask=src_mask,
position_embeddings=pos_embed,
output_attentions=output_attentions,
)
return hidden_states
|
class_definition
| 62,035 | 62,665 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,704 |
class RTDetrHybridEncoder(nn.Module):
"""
Decoder consisting of a projection layer, a set of `RTDetrEncoder`, a top-down Feature Pyramid Network
(FPN) and a bottom-up Path Aggregation Network (PAN). More details on the paper: https://arxiv.org/abs/2304.08069
Args:
config: RTDetrConfig
"""
def __init__(self, config: RTDetrConfig):
super().__init__()
self.config = config
self.in_channels = config.encoder_in_channels
self.feat_strides = config.feat_strides
self.encoder_hidden_dim = config.encoder_hidden_dim
self.encode_proj_layers = config.encode_proj_layers
self.positional_encoding_temperature = config.positional_encoding_temperature
self.eval_size = config.eval_size
self.out_channels = [self.encoder_hidden_dim for _ in self.in_channels]
self.out_strides = self.feat_strides
activation_function = config.activation_function
# encoder transformer
self.encoder = nn.ModuleList([RTDetrEncoder(config) for _ in range(len(self.encode_proj_layers))])
# top-down fpn
self.lateral_convs = nn.ModuleList()
self.fpn_blocks = nn.ModuleList()
for _ in range(len(self.in_channels) - 1, 0, -1):
self.lateral_convs.append(
RTDetrConvNormLayer(
config, self.encoder_hidden_dim, self.encoder_hidden_dim, 1, 1, activation=activation_function
)
)
self.fpn_blocks.append(RTDetrCSPRepLayer(config))
# bottom-up pan
self.downsample_convs = nn.ModuleList()
self.pan_blocks = nn.ModuleList()
for _ in range(len(self.in_channels) - 1):
self.downsample_convs.append(
RTDetrConvNormLayer(
config, self.encoder_hidden_dim, self.encoder_hidden_dim, 3, 2, activation=activation_function
)
)
self.pan_blocks.append(RTDetrCSPRepLayer(config))
@staticmethod
def build_2d_sincos_position_embedding(
width, height, embed_dim=256, temperature=10000.0, device="cpu", dtype=torch.float32
):
grid_w = torch.arange(int(width), dtype=dtype, device=device)
grid_h = torch.arange(int(height), dtype=dtype, device=device)
grid_w, grid_h = torch.meshgrid(grid_w, grid_h, indexing="ij")
if embed_dim % 4 != 0:
raise ValueError("Embed dimension must be divisible by 4 for 2D sin-cos position embedding")
pos_dim = embed_dim // 4
omega = torch.arange(pos_dim, dtype=dtype, device=device) / pos_dim
omega = 1.0 / (temperature**omega)
out_w = grid_w.flatten()[..., None] @ omega[None]
out_h = grid_h.flatten()[..., None] @ omega[None]
return torch.concat([out_w.sin(), out_w.cos(), out_h.sin(), out_h.cos()], dim=1)[None, :, :]
def forward(
self,
inputs_embeds=None,
attention_mask=None,
position_embeddings=None,
spatial_shapes=None,
level_start_index=None,
valid_ratios=None,
output_attentions=None,
output_hidden_states=None,
return_dict=None,
):
r"""
Args:
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Flattened feature map (output of the backbone + projection layer) that is passed to the encoder.
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding pixel features. Mask values selected in `[0, 1]`:
- 1 for pixel features that are real (i.e. **not masked**),
- 0 for pixel features that are padding (i.e. **masked**).
[What are attention masks?](../glossary#attention-mask)
position_embeddings (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Position embeddings that are added to the queries and keys in each self-attention layer.
spatial_shapes (`torch.LongTensor` of shape `(num_feature_levels, 2)`):
Spatial shapes of each feature map.
level_start_index (`torch.LongTensor` of shape `(num_feature_levels)`):
Starting index of each feature map.
valid_ratios (`torch.FloatTensor` of shape `(batch_size, num_feature_levels, 2)`):
Ratio of valid area in each feature level.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors
for more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
hidden_states = inputs_embeds
encoder_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
# encoder
if self.config.encoder_layers > 0:
for i, enc_ind in enumerate(self.encode_proj_layers):
if output_hidden_states:
encoder_states = encoder_states + (hidden_states[enc_ind],)
height, width = hidden_states[enc_ind].shape[2:]
# flatten [batch, channel, height, width] to [batch, height*width, channel]
src_flatten = hidden_states[enc_ind].flatten(2).permute(0, 2, 1)
if self.training or self.eval_size is None:
pos_embed = self.build_2d_sincos_position_embedding(
width,
height,
self.encoder_hidden_dim,
self.positional_encoding_temperature,
device=src_flatten.device,
dtype=src_flatten.dtype,
)
else:
pos_embed = None
layer_outputs = self.encoder[i](
src_flatten,
pos_embed=pos_embed,
output_attentions=output_attentions,
)
hidden_states[enc_ind] = (
layer_outputs[0].permute(0, 2, 1).reshape(-1, self.encoder_hidden_dim, height, width).contiguous()
)
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
if output_hidden_states:
encoder_states = encoder_states + (hidden_states[enc_ind],)
# broadcasting and fusion
fpn_feature_maps = [hidden_states[-1]]
for idx in range(len(self.in_channels) - 1, 0, -1):
feat_high = fpn_feature_maps[0]
feat_low = hidden_states[idx - 1]
feat_high = self.lateral_convs[len(self.in_channels) - 1 - idx](feat_high)
fpn_feature_maps[0] = feat_high
upsample_feat = F.interpolate(feat_high, scale_factor=2.0, mode="nearest")
fps_map = self.fpn_blocks[len(self.in_channels) - 1 - idx](torch.concat([upsample_feat, feat_low], dim=1))
fpn_feature_maps.insert(0, fps_map)
fpn_states = [fpn_feature_maps[0]]
for idx in range(len(self.in_channels) - 1):
feat_low = fpn_states[-1]
feat_high = fpn_feature_maps[idx + 1]
downsample_feat = self.downsample_convs[idx](feat_low)
hidden_states = self.pan_blocks[idx](
torch.concat([downsample_feat, feat_high.to(downsample_feat.device)], dim=1)
)
fpn_states.append(hidden_states)
if not return_dict:
return tuple(v for v in [fpn_states, encoder_states, all_attentions] if v is not None)
return BaseModelOutput(last_hidden_state=fpn_states, hidden_states=encoder_states, attentions=all_attentions)
|
class_definition
| 62,668 | 71,165 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,705 |
class RTDetrDecoder(RTDetrPreTrainedModel):
def __init__(self, config: RTDetrConfig):
super().__init__(config)
self.dropout = config.dropout
self.layers = nn.ModuleList([RTDetrDecoderLayer(config) for _ in range(config.decoder_layers)])
self.query_pos_head = RTDetrMLPPredictionHead(config, 4, 2 * config.d_model, config.d_model, num_layers=2)
# hack implementation for iterative bounding box refinement and two-stage Deformable DETR
self.bbox_embed = None
self.class_embed = None
# Initialize weights and apply final processing
self.post_init()
def forward(
self,
inputs_embeds=None,
encoder_hidden_states=None,
encoder_attention_mask=None,
position_embeddings=None,
reference_points=None,
spatial_shapes=None,
spatial_shapes_list=None,
level_start_index=None,
valid_ratios=None,
output_attentions=None,
output_hidden_states=None,
return_dict=None,
):
r"""
Args:
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, num_queries, hidden_size)`):
The query embeddings that are passed into the decoder.
encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention
of the decoder.
encoder_attention_mask (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing cross-attention on padding pixel_values of the encoder. Mask values selected
in `[0, 1]`:
- 1 for pixels that are real (i.e. **not masked**),
- 0 for pixels that are padding (i.e. **masked**).
position_embeddings (`torch.FloatTensor` of shape `(batch_size, num_queries, hidden_size)`, *optional*):
Position embeddings that are added to the queries and keys in each self-attention layer.
reference_points (`torch.FloatTensor` of shape `(batch_size, num_queries, 4)` is `as_two_stage` else `(batch_size, num_queries, 2)` or , *optional*):
Reference point in range `[0, 1]`, top-left (0,0), bottom-right (1, 1), including padding area.
spatial_shapes (`torch.FloatTensor` of shape `(num_feature_levels, 2)`):
Spatial shapes of the feature maps.
level_start_index (`torch.LongTensor` of shape `(num_feature_levels)`, *optional*):
Indexes for the start of each feature level. In range `[0, sequence_length]`.
valid_ratios (`torch.FloatTensor` of shape `(batch_size, num_feature_levels, 2)`, *optional*):
Ratio of valid area in each feature level.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors
for more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if inputs_embeds is not None:
hidden_states = inputs_embeds
# decoder layers
all_hidden_states = () if output_hidden_states else None
all_self_attns = () if output_attentions else None
all_cross_attentions = () if (output_attentions and encoder_hidden_states is not None) else None
intermediate = ()
intermediate_reference_points = ()
intermediate_logits = ()
reference_points = F.sigmoid(reference_points)
# https://github.com/lyuwenyu/RT-DETR/blob/94f5e16708329d2f2716426868ec89aa774af016/rtdetr_pytorch/src/zoo/rtdetr/rtdetr_decoder.py#L252
for idx, decoder_layer in enumerate(self.layers):
reference_points_input = reference_points.unsqueeze(2)
position_embeddings = self.query_pos_head(reference_points)
if output_hidden_states:
all_hidden_states += (hidden_states,)
layer_outputs = decoder_layer(
hidden_states,
position_embeddings=position_embeddings,
encoder_hidden_states=encoder_hidden_states,
reference_points=reference_points_input,
spatial_shapes=spatial_shapes,
spatial_shapes_list=spatial_shapes_list,
level_start_index=level_start_index,
encoder_attention_mask=encoder_attention_mask,
output_attentions=output_attentions,
)
hidden_states = layer_outputs[0]
# hack implementation for iterative bounding box refinement
if self.bbox_embed is not None:
tmp = self.bbox_embed[idx](hidden_states)
new_reference_points = F.sigmoid(tmp + inverse_sigmoid(reference_points))
reference_points = new_reference_points.detach()
intermediate += (hidden_states,)
intermediate_reference_points += (
(new_reference_points,) if self.bbox_embed is not None else (reference_points,)
)
if self.class_embed is not None:
logits = self.class_embed[idx](hidden_states)
intermediate_logits += (logits,)
if output_attentions:
all_self_attns += (layer_outputs[1],)
if encoder_hidden_states is not None:
all_cross_attentions += (layer_outputs[2],)
# Keep batch_size as first dimension
intermediate = torch.stack(intermediate, dim=1)
intermediate_reference_points = torch.stack(intermediate_reference_points, dim=1)
if self.class_embed is not None:
intermediate_logits = torch.stack(intermediate_logits, dim=1)
# add hidden states from the last decoder layer
if output_hidden_states:
all_hidden_states += (hidden_states,)
if not return_dict:
return tuple(
v
for v in [
hidden_states,
intermediate,
intermediate_logits,
intermediate_reference_points,
all_hidden_states,
all_self_attns,
all_cross_attentions,
]
if v is not None
)
return RTDetrDecoderOutput(
last_hidden_state=hidden_states,
intermediate_hidden_states=intermediate,
intermediate_logits=intermediate_logits,
intermediate_reference_points=intermediate_reference_points,
hidden_states=all_hidden_states,
attentions=all_self_attns,
cross_attentions=all_cross_attentions,
)
|
class_definition
| 71,168 | 78,701 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,706 |
class RTDetrMLPPredictionHead(nn.Module):
"""
Very simple multi-layer perceptron (MLP, also called FFN), used to predict the normalized center coordinates,
height and width of a bounding box w.r.t. an image.
Copied from https://github.com/facebookresearch/detr/blob/master/models/detr.py
Origin from https://github.com/lyuwenyu/RT-DETR/blob/94f5e16708329d2f2716426868ec89aa774af016/rtdetr_paddle/ppdet/modeling/transformers/utils.py#L453
"""
def __init__(self, config, input_dim, d_model, output_dim, num_layers):
super().__init__()
self.num_layers = num_layers
h = [d_model] * (num_layers - 1)
self.layers = nn.ModuleList(nn.Linear(n, k) for n, k in zip([input_dim] + h, h + [output_dim]))
def forward(self, x):
for i, layer in enumerate(self.layers):
x = nn.functional.relu(layer(x)) if i < self.num_layers - 1 else layer(x)
return x
|
class_definition
| 79,641 | 80,572 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,707 |
class RTDetrModel(RTDetrPreTrainedModel):
def __init__(self, config: RTDetrConfig):
super().__init__(config)
# Create backbone
self.backbone = RTDetrConvEncoder(config)
intermediate_channel_sizes = self.backbone.intermediate_channel_sizes
# Create encoder input projection layers
# https://github.com/lyuwenyu/RT-DETR/blob/94f5e16708329d2f2716426868ec89aa774af016/rtdetr_pytorch/src/zoo/rtdetr/hybrid_encoder.py#L212
num_backbone_outs = len(intermediate_channel_sizes)
encoder_input_proj_list = []
for _ in range(num_backbone_outs):
in_channels = intermediate_channel_sizes[_]
encoder_input_proj_list.append(
nn.Sequential(
nn.Conv2d(in_channels, config.encoder_hidden_dim, kernel_size=1, bias=False),
nn.BatchNorm2d(config.encoder_hidden_dim),
)
)
self.encoder_input_proj = nn.ModuleList(encoder_input_proj_list)
# Create encoder
self.encoder = RTDetrHybridEncoder(config)
# denoising part
if config.num_denoising > 0:
self.denoising_class_embed = nn.Embedding(
config.num_labels + 1, config.d_model, padding_idx=config.num_labels
)
# decoder embedding
if config.learn_initial_query:
self.weight_embedding = nn.Embedding(config.num_queries, config.d_model)
# encoder head
self.enc_output = nn.Sequential(
nn.Linear(config.d_model, config.d_model),
nn.LayerNorm(config.d_model, eps=config.layer_norm_eps),
)
self.enc_score_head = nn.Linear(config.d_model, config.num_labels)
self.enc_bbox_head = RTDetrMLPPredictionHead(config, config.d_model, config.d_model, 4, num_layers=3)
# init encoder output anchors and valid_mask
if config.anchor_image_size:
self.anchors, self.valid_mask = self.generate_anchors(dtype=self.dtype)
# Create decoder input projection layers
# https://github.com/lyuwenyu/RT-DETR/blob/94f5e16708329d2f2716426868ec89aa774af016/rtdetr_pytorch/src/zoo/rtdetr/rtdetr_decoder.py#L412
num_backbone_outs = len(config.decoder_in_channels)
decoder_input_proj_list = []
for _ in range(num_backbone_outs):
in_channels = config.decoder_in_channels[_]
decoder_input_proj_list.append(
nn.Sequential(
nn.Conv2d(in_channels, config.d_model, kernel_size=1, bias=False),
nn.BatchNorm2d(config.d_model, config.batch_norm_eps),
)
)
for _ in range(config.num_feature_levels - num_backbone_outs):
decoder_input_proj_list.append(
nn.Sequential(
nn.Conv2d(in_channels, config.d_model, kernel_size=3, stride=2, padding=1, bias=False),
nn.BatchNorm2d(config.d_model, config.batch_norm_eps),
)
)
in_channels = config.d_model
self.decoder_input_proj = nn.ModuleList(decoder_input_proj_list)
# decoder
self.decoder = RTDetrDecoder(config)
self.post_init()
def get_encoder(self):
return self.encoder
def get_decoder(self):
return self.decoder
def freeze_backbone(self):
for param in self.backbone.parameters():
param.requires_grad_(False)
def unfreeze_backbone(self):
for param in self.backbone.parameters():
param.requires_grad_(True)
@compile_compatible_lru_cache(maxsize=32)
def generate_anchors(self, spatial_shapes=None, grid_size=0.05, device="cpu", dtype=torch.float32):
if spatial_shapes is None:
spatial_shapes = [
[int(self.config.anchor_image_size[0] / s), int(self.config.anchor_image_size[1] / s)]
for s in self.config.feat_strides
]
anchors = []
for level, (height, width) in enumerate(spatial_shapes):
grid_y, grid_x = torch.meshgrid(
torch.arange(end=height, dtype=dtype, device=device),
torch.arange(end=width, dtype=dtype, device=device),
indexing="ij",
)
grid_xy = torch.stack([grid_x, grid_y], -1)
valid_wh = torch.tensor([width, height], device=device).to(dtype)
grid_xy = (grid_xy.unsqueeze(0) + 0.5) / valid_wh
wh = torch.ones_like(grid_xy) * grid_size * (2.0**level)
anchors.append(torch.concat([grid_xy, wh], -1).reshape(-1, height * width, 4))
# define the valid range for anchor coordinates
eps = 1e-2
anchors = torch.concat(anchors, 1)
valid_mask = ((anchors > eps) * (anchors < 1 - eps)).all(-1, keepdim=True)
anchors = torch.log(anchors / (1 - anchors))
anchors = torch.where(valid_mask, anchors, torch.tensor(torch.finfo(dtype).max, dtype=dtype, device=device))
return anchors, valid_mask
@add_start_docstrings_to_model_forward(RTDETR_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=RTDetrModelOutput, config_class=_CONFIG_FOR_DOC)
def forward(
self,
pixel_values: torch.FloatTensor,
pixel_mask: Optional[torch.LongTensor] = None,
encoder_outputs: Optional[torch.FloatTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
decoder_inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[List[dict]] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple[torch.FloatTensor], RTDetrModelOutput]:
r"""
Returns:
Examples:
```python
>>> from transformers import AutoImageProcessor, RTDetrModel
>>> from PIL import Image
>>> import requests
>>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> image_processor = AutoImageProcessor.from_pretrained("PekingU/rtdetr_r50vd")
>>> model = RTDetrModel.from_pretrained("PekingU/rtdetr_r50vd")
>>> inputs = image_processor(images=image, return_tensors="pt")
>>> outputs = model(**inputs)
>>> last_hidden_states = outputs.last_hidden_state
>>> list(last_hidden_states.shape)
[1, 300, 256]
```"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
batch_size, num_channels, height, width = pixel_values.shape
device = pixel_values.device
if pixel_mask is None:
pixel_mask = torch.ones(((batch_size, height, width)), device=device)
features = self.backbone(pixel_values, pixel_mask)
proj_feats = [self.encoder_input_proj[level](source) for level, (source, mask) in enumerate(features)]
if encoder_outputs is None:
encoder_outputs = self.encoder(
proj_feats,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
# If the user passed a tuple for encoder_outputs, we wrap it in a BaseModelOutput when return_dict=True
elif return_dict and not isinstance(encoder_outputs, BaseModelOutput):
encoder_outputs = BaseModelOutput(
last_hidden_state=encoder_outputs[0],
hidden_states=encoder_outputs[1] if output_hidden_states else None,
attentions=encoder_outputs[2]
if len(encoder_outputs) > 2
else encoder_outputs[1]
if output_attentions
else None,
)
# Equivalent to def _get_encoder_input
# https://github.com/lyuwenyu/RT-DETR/blob/94f5e16708329d2f2716426868ec89aa774af016/rtdetr_pytorch/src/zoo/rtdetr/rtdetr_decoder.py#L412
sources = []
for level, source in enumerate(encoder_outputs[0]):
sources.append(self.decoder_input_proj[level](source))
# Lowest resolution feature maps are obtained via 3x3 stride 2 convolutions on the final stage
if self.config.num_feature_levels > len(sources):
_len_sources = len(sources)
sources.append(self.decoder_input_proj[_len_sources](encoder_outputs[0])[-1])
for i in range(_len_sources + 1, self.config.num_feature_levels):
sources.append(self.decoder_input_proj[i](encoder_outputs[0][-1]))
# Prepare encoder inputs (by flattening)
source_flatten = []
spatial_shapes_list = []
for level, source in enumerate(sources):
batch_size, num_channels, height, width = source.shape
spatial_shape = (height, width)
spatial_shapes_list.append(spatial_shape)
source = source.flatten(2).transpose(1, 2)
source_flatten.append(source)
source_flatten = torch.cat(source_flatten, 1)
spatial_shapes = torch.as_tensor(spatial_shapes_list, dtype=torch.long, device=source_flatten.device)
level_start_index = torch.cat((spatial_shapes.new_zeros((1,)), spatial_shapes.prod(1).cumsum(0)[:-1]))
# prepare denoising training
if self.training and self.config.num_denoising > 0 and labels is not None:
(
denoising_class,
denoising_bbox_unact,
attention_mask,
denoising_meta_values,
) = get_contrastive_denoising_training_group(
targets=labels,
num_classes=self.config.num_labels,
num_queries=self.config.num_queries,
class_embed=self.denoising_class_embed,
num_denoising_queries=self.config.num_denoising,
label_noise_ratio=self.config.label_noise_ratio,
box_noise_scale=self.config.box_noise_scale,
)
else:
denoising_class, denoising_bbox_unact, attention_mask, denoising_meta_values = None, None, None, None
batch_size = len(source_flatten)
device = source_flatten.device
dtype = source_flatten.dtype
# prepare input for decoder
if self.training or self.config.anchor_image_size is None:
# Pass spatial_shapes as tuple to make it hashable and make sure
# lru_cache is working for generate_anchors()
spatial_shapes_tuple = tuple(spatial_shapes_list)
anchors, valid_mask = self.generate_anchors(spatial_shapes_tuple, device=device, dtype=dtype)
else:
anchors, valid_mask = self.anchors, self.valid_mask
anchors, valid_mask = anchors.to(device, dtype), valid_mask.to(device, dtype)
# use the valid_mask to selectively retain values in the feature map where the mask is `True`
memory = valid_mask.to(source_flatten.dtype) * source_flatten
output_memory = self.enc_output(memory)
enc_outputs_class = self.enc_score_head(output_memory)
enc_outputs_coord_logits = self.enc_bbox_head(output_memory) + anchors
_, topk_ind = torch.topk(enc_outputs_class.max(-1).values, self.config.num_queries, dim=1)
reference_points_unact = enc_outputs_coord_logits.gather(
dim=1, index=topk_ind.unsqueeze(-1).repeat(1, 1, enc_outputs_coord_logits.shape[-1])
)
enc_topk_bboxes = F.sigmoid(reference_points_unact)
if denoising_bbox_unact is not None:
reference_points_unact = torch.concat([denoising_bbox_unact, reference_points_unact], 1)
enc_topk_logits = enc_outputs_class.gather(
dim=1, index=topk_ind.unsqueeze(-1).repeat(1, 1, enc_outputs_class.shape[-1])
)
# extract region features
if self.config.learn_initial_query:
target = self.weight_embedding.tile([batch_size, 1, 1])
else:
target = output_memory.gather(dim=1, index=topk_ind.unsqueeze(-1).repeat(1, 1, output_memory.shape[-1]))
target = target.detach()
if denoising_class is not None:
target = torch.concat([denoising_class, target], 1)
init_reference_points = reference_points_unact.detach()
# decoder
decoder_outputs = self.decoder(
inputs_embeds=target,
encoder_hidden_states=source_flatten,
encoder_attention_mask=attention_mask,
reference_points=init_reference_points,
spatial_shapes=spatial_shapes,
spatial_shapes_list=spatial_shapes_list,
level_start_index=level_start_index,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
if not return_dict:
enc_outputs = tuple(
value
for value in [enc_topk_logits, enc_topk_bboxes, enc_outputs_class, enc_outputs_coord_logits]
if value is not None
)
dn_outputs = tuple(value if value is not None else None for value in [denoising_meta_values])
tuple_outputs = decoder_outputs + encoder_outputs + (init_reference_points,) + enc_outputs + dn_outputs
return tuple_outputs
return RTDetrModelOutput(
last_hidden_state=decoder_outputs.last_hidden_state,
intermediate_hidden_states=decoder_outputs.intermediate_hidden_states,
intermediate_logits=decoder_outputs.intermediate_logits,
intermediate_reference_points=decoder_outputs.intermediate_reference_points,
decoder_hidden_states=decoder_outputs.hidden_states,
decoder_attentions=decoder_outputs.attentions,
cross_attentions=decoder_outputs.cross_attentions,
encoder_last_hidden_state=encoder_outputs.last_hidden_state,
encoder_hidden_states=encoder_outputs.hidden_states,
encoder_attentions=encoder_outputs.attentions,
init_reference_points=init_reference_points,
enc_topk_logits=enc_topk_logits,
enc_topk_bboxes=enc_topk_bboxes,
enc_outputs_class=enc_outputs_class,
enc_outputs_coord_logits=enc_outputs_coord_logits,
denoising_meta_values=denoising_meta_values,
)
|
class_definition
| 80,764 | 95,533 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,708 |
class RTDetrForObjectDetection(RTDetrPreTrainedModel):
# When using clones, all layers > 0 will be clones, but layer 0 *is* required
_tied_weights_keys = ["bbox_embed", "class_embed"]
# We can't initialize the model on meta device as some weights are modified during the initialization
_no_split_modules = None
def __init__(self, config: RTDetrConfig):
super().__init__(config)
# RTDETR encoder-decoder model
self.model = RTDetrModel(config)
# Detection heads on top
self.class_embed = partial(nn.Linear, config.d_model, config.num_labels)
self.bbox_embed = partial(RTDetrMLPPredictionHead, config, config.d_model, config.d_model, 4, num_layers=3)
# if two-stage, the last class_embed and bbox_embed is for region proposal generation
num_pred = config.decoder_layers
if config.with_box_refine:
self.class_embed = _get_clones(self.class_embed, num_pred)
self.bbox_embed = _get_clones(self.bbox_embed, num_pred)
else:
self.class_embed = nn.ModuleList([self.class_embed() for _ in range(num_pred)])
self.bbox_embed = nn.ModuleList([self.bbox_embed() for _ in range(num_pred)])
# hack implementation for iterative bounding box refinement
self.model.decoder.class_embed = self.class_embed
self.model.decoder.bbox_embed = self.bbox_embed
# Initialize weights and apply final processing
self.post_init()
@torch.jit.unused
def _set_aux_loss(self, outputs_class, outputs_coord):
# this is a workaround to make torchscript happy, as torchscript
# doesn't support dictionary with non-homogeneous values, such
# as a dict having both a Tensor and a list.
return [{"logits": a, "pred_boxes": b} for a, b in zip(outputs_class, outputs_coord)]
@add_start_docstrings_to_model_forward(RTDETR_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=RTDetrObjectDetectionOutput, config_class=_CONFIG_FOR_DOC)
def forward(
self,
pixel_values: torch.FloatTensor,
pixel_mask: Optional[torch.LongTensor] = None,
encoder_outputs: Optional[torch.FloatTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
decoder_inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[List[dict]] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
**loss_kwargs,
) -> Union[Tuple[torch.FloatTensor], RTDetrObjectDetectionOutput]:
r"""
labels (`List[Dict]` of len `(batch_size,)`, *optional*):
Labels for computing the bipartite matching loss. List of dicts, each dictionary containing at least the
following 2 keys: 'class_labels' and 'boxes' (the class labels and bounding boxes of an image in the batch
respectively). The class labels themselves should be a `torch.LongTensor` of len `(number of bounding boxes
in the image,)` and the boxes a `torch.FloatTensor` of shape `(number of bounding boxes in the image, 4)`.
Returns:
Examples:
```python
>>> from transformers import RTDetrImageProcessor, RTDetrForObjectDetection
>>> from PIL import Image
>>> import requests
>>> import torch
>>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> image_processor = RTDetrImageProcessor.from_pretrained("PekingU/rtdetr_r50vd")
>>> model = RTDetrForObjectDetection.from_pretrained("PekingU/rtdetr_r50vd")
>>> # prepare image for the model
>>> inputs = image_processor(images=image, return_tensors="pt")
>>> # forward pass
>>> outputs = model(**inputs)
>>> logits = outputs.logits
>>> list(logits.shape)
[1, 300, 80]
>>> boxes = outputs.pred_boxes
>>> list(boxes.shape)
[1, 300, 4]
>>> # convert outputs (bounding boxes and class logits) to Pascal VOC format (xmin, ymin, xmax, ymax)
>>> target_sizes = torch.tensor([image.size[::-1]])
>>> results = image_processor.post_process_object_detection(outputs, threshold=0.9, target_sizes=target_sizes)[
... 0
... ]
>>> for score, label, box in zip(results["scores"], results["labels"], results["boxes"]):
... box = [round(i, 2) for i in box.tolist()]
... print(
... f"Detected {model.config.id2label[label.item()]} with confidence "
... f"{round(score.item(), 3)} at location {box}"
... )
Detected sofa with confidence 0.97 at location [0.14, 0.38, 640.13, 476.21]
Detected cat with confidence 0.96 at location [343.38, 24.28, 640.14, 371.5]
Detected cat with confidence 0.958 at location [13.23, 54.18, 318.98, 472.22]
Detected remote with confidence 0.951 at location [40.11, 73.44, 175.96, 118.48]
Detected remote with confidence 0.924 at location [333.73, 76.58, 369.97, 186.99]
```"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
outputs = self.model(
pixel_values,
pixel_mask=pixel_mask,
encoder_outputs=encoder_outputs,
inputs_embeds=inputs_embeds,
decoder_inputs_embeds=decoder_inputs_embeds,
labels=labels,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
denoising_meta_values = (
outputs.denoising_meta_values if return_dict else outputs[-1] if self.training else None
)
outputs_class = outputs.intermediate_logits if return_dict else outputs[2]
outputs_coord = outputs.intermediate_reference_points if return_dict else outputs[3]
logits = outputs_class[:, -1]
pred_boxes = outputs_coord[:, -1]
loss, loss_dict, auxiliary_outputs, enc_topk_logits, enc_topk_bboxes = None, None, None, None, None
if labels is not None:
if self.training and denoising_meta_values is not None:
enc_topk_logits = outputs.enc_topk_logits if return_dict else outputs[-5]
enc_topk_bboxes = outputs.enc_topk_bboxes if return_dict else outputs[-4]
loss, loss_dict, auxiliary_outputs = self.loss_function(
logits,
labels,
self.device,
pred_boxes,
self.config,
outputs_class,
outputs_coord,
enc_topk_logits=enc_topk_logits,
enc_topk_bboxes=enc_topk_bboxes,
denoising_meta_values=denoising_meta_values,
**loss_kwargs,
)
if not return_dict:
if auxiliary_outputs is not None:
output = (logits, pred_boxes) + (auxiliary_outputs,) + outputs
else:
output = (logits, pred_boxes) + outputs
return ((loss, loss_dict) + output) if loss is not None else output
return RTDetrObjectDetectionOutput(
loss=loss,
loss_dict=loss_dict,
logits=logits,
pred_boxes=pred_boxes,
auxiliary_outputs=auxiliary_outputs,
last_hidden_state=outputs.last_hidden_state,
intermediate_hidden_states=outputs.intermediate_hidden_states,
intermediate_logits=outputs.intermediate_logits,
intermediate_reference_points=outputs.intermediate_reference_points,
decoder_hidden_states=outputs.decoder_hidden_states,
decoder_attentions=outputs.decoder_attentions,
cross_attentions=outputs.cross_attentions,
encoder_last_hidden_state=outputs.encoder_last_hidden_state,
encoder_hidden_states=outputs.encoder_hidden_states,
encoder_attentions=outputs.encoder_attentions,
init_reference_points=outputs.init_reference_points,
enc_topk_logits=outputs.enc_topk_logits,
enc_topk_bboxes=outputs.enc_topk_bboxes,
enc_outputs_class=outputs.enc_outputs_class,
enc_outputs_coord_logits=outputs.enc_outputs_coord_logits,
denoising_meta_values=outputs.denoising_meta_values,
)
|
class_definition
| 95,759 | 104,554 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr.py
| null | 4,709 |
class RTDetrResNetConvLayer(nn.Module):
def __init__(
self, in_channels: int, out_channels: int, kernel_size: int = 3, stride: int = 1, activation: str = "relu"
):
super().__init__()
self.convolution = nn.Conv2d(
in_channels, out_channels, kernel_size=kernel_size, stride=stride, padding=kernel_size // 2, bias=False
)
self.normalization = nn.BatchNorm2d(out_channels)
self.activation = ACT2FN[activation] if activation is not None else nn.Identity()
def forward(self, input: Tensor) -> Tensor:
hidden_state = self.convolution(input)
hidden_state = self.normalization(hidden_state)
hidden_state = self.activation(hidden_state)
return hidden_state
|
class_definition
| 1,797 | 2,548 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,710 |
class RTDetrResNetEmbeddings(nn.Module):
"""
ResNet Embeddings (stem) composed of a deep aggressive convolution.
"""
def __init__(self, config: RTDetrResNetConfig):
super().__init__()
self.embedder = nn.Sequential(
*[
RTDetrResNetConvLayer(
config.num_channels,
config.embedding_size // 2,
kernel_size=3,
stride=2,
activation=config.hidden_act,
),
RTDetrResNetConvLayer(
config.embedding_size // 2,
config.embedding_size // 2,
kernel_size=3,
stride=1,
activation=config.hidden_act,
),
RTDetrResNetConvLayer(
config.embedding_size // 2,
config.embedding_size,
kernel_size=3,
stride=1,
activation=config.hidden_act,
),
]
)
self.pooler = nn.MaxPool2d(kernel_size=3, stride=2, padding=1)
self.num_channels = config.num_channels
def forward(self, pixel_values: Tensor) -> Tensor:
num_channels = pixel_values.shape[1]
if num_channels != self.num_channels:
raise ValueError(
"Make sure that the channel dimension of the pixel values match with the one set in the configuration."
)
embedding = self.embedder(pixel_values)
embedding = self.pooler(embedding)
return embedding
|
class_definition
| 2,551 | 4,178 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,711 |
class RTDetrResNetShortCut(nn.Module):
"""
ResNet shortcut, used to project the residual features to the correct size. If needed, it is also used to
downsample the input using `stride=2`.
"""
def __init__(self, in_channels: int, out_channels: int, stride: int = 2):
super().__init__()
self.convolution = nn.Conv2d(in_channels, out_channels, kernel_size=1, stride=stride, bias=False)
self.normalization = nn.BatchNorm2d(out_channels)
def forward(self, input: Tensor) -> Tensor:
hidden_state = self.convolution(input)
hidden_state = self.normalization(hidden_state)
return hidden_state
|
class_definition
| 4,277 | 4,934 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,712 |
class RTDetrResNetBasicLayer(nn.Module):
"""
A classic ResNet's residual layer composed by two `3x3` convolutions.
See https://github.com/lyuwenyu/RT-DETR/blob/5b628eaa0a2fc25bdafec7e6148d5296b144af85/rtdetr_pytorch/src/nn/backbone/presnet.py#L34.
"""
def __init__(
self,
config: RTDetrResNetConfig,
in_channels: int,
out_channels: int,
stride: int = 1,
should_apply_shortcut: bool = False,
):
super().__init__()
if in_channels != out_channels:
self.shortcut = (
nn.Sequential(
*[nn.AvgPool2d(2, 2, 0, ceil_mode=True), RTDetrResNetShortCut(in_channels, out_channels, stride=1)]
)
if should_apply_shortcut
else nn.Identity()
)
else:
self.shortcut = (
RTDetrResNetShortCut(in_channels, out_channels, stride=stride)
if should_apply_shortcut
else nn.Identity()
)
self.layer = nn.Sequential(
RTDetrResNetConvLayer(in_channels, out_channels, stride=stride),
RTDetrResNetConvLayer(out_channels, out_channels, activation=None),
)
self.activation = ACT2FN[config.hidden_act]
def forward(self, hidden_state):
residual = hidden_state
hidden_state = self.layer(hidden_state)
residual = self.shortcut(residual)
hidden_state += residual
hidden_state = self.activation(hidden_state)
return hidden_state
|
class_definition
| 4,937 | 6,502 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,713 |
class RTDetrResNetBottleNeckLayer(nn.Module):
"""
A classic RTDetrResNet's bottleneck layer composed by three `3x3` convolutions.
The first `1x1` convolution reduces the input by a factor of `reduction` in order to make the second `3x3`
convolution faster. The last `1x1` convolution remaps the reduced features to `out_channels`. If
`downsample_in_bottleneck` is true, downsample will be in the first layer instead of the second layer.
"""
def __init__(
self,
config: RTDetrResNetConfig,
in_channels: int,
out_channels: int,
stride: int = 1,
):
super().__init__()
reduction = 4
should_apply_shortcut = in_channels != out_channels or stride != 1
reduces_channels = out_channels // reduction
if stride == 2:
self.shortcut = nn.Sequential(
*[
nn.AvgPool2d(2, 2, 0, ceil_mode=True),
RTDetrResNetShortCut(in_channels, out_channels, stride=1)
if should_apply_shortcut
else nn.Identity(),
]
)
else:
self.shortcut = (
RTDetrResNetShortCut(in_channels, out_channels, stride=stride)
if should_apply_shortcut
else nn.Identity()
)
self.layer = nn.Sequential(
RTDetrResNetConvLayer(
in_channels, reduces_channels, kernel_size=1, stride=stride if config.downsample_in_bottleneck else 1
),
RTDetrResNetConvLayer(
reduces_channels, reduces_channels, stride=stride if not config.downsample_in_bottleneck else 1
),
RTDetrResNetConvLayer(reduces_channels, out_channels, kernel_size=1, activation=None),
)
self.activation = ACT2FN[config.hidden_act]
def forward(self, hidden_state):
residual = hidden_state
hidden_state = self.layer(hidden_state)
residual = self.shortcut(residual)
hidden_state += residual
hidden_state = self.activation(hidden_state)
return hidden_state
|
class_definition
| 6,505 | 8,656 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,714 |
class RTDetrResNetStage(nn.Module):
"""
A RTDetrResNet stage composed by stacked layers.
"""
def __init__(
self,
config: RTDetrResNetConfig,
in_channels: int,
out_channels: int,
stride: int = 2,
depth: int = 2,
):
super().__init__()
layer = RTDetrResNetBottleNeckLayer if config.layer_type == "bottleneck" else RTDetrResNetBasicLayer
if config.layer_type == "bottleneck":
first_layer = layer(
config,
in_channels,
out_channels,
stride=stride,
)
else:
first_layer = layer(config, in_channels, out_channels, stride=stride, should_apply_shortcut=True)
self.layers = nn.Sequential(
first_layer, *[layer(config, out_channels, out_channels) for _ in range(depth - 1)]
)
def forward(self, input: Tensor) -> Tensor:
hidden_state = input
for layer in self.layers:
hidden_state = layer(hidden_state)
return hidden_state
|
class_definition
| 8,659 | 9,740 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,715 |
class RTDetrResNetEncoder(nn.Module):
def __init__(self, config: RTDetrResNetConfig):
super().__init__()
self.stages = nn.ModuleList([])
# based on `downsample_in_first_stage` the first layer of the first stage may or may not downsample the input
self.stages.append(
RTDetrResNetStage(
config,
config.embedding_size,
config.hidden_sizes[0],
stride=2 if config.downsample_in_first_stage else 1,
depth=config.depths[0],
)
)
in_out_channels = zip(config.hidden_sizes, config.hidden_sizes[1:])
for (in_channels, out_channels), depth in zip(in_out_channels, config.depths[1:]):
self.stages.append(RTDetrResNetStage(config, in_channels, out_channels, depth=depth))
def forward(
self, hidden_state: Tensor, output_hidden_states: bool = False, return_dict: bool = True
) -> BaseModelOutputWithNoAttention:
hidden_states = () if output_hidden_states else None
for stage_module in self.stages:
if output_hidden_states:
hidden_states = hidden_states + (hidden_state,)
hidden_state = stage_module(hidden_state)
if output_hidden_states:
hidden_states = hidden_states + (hidden_state,)
if not return_dict:
return tuple(v for v in [hidden_state, hidden_states] if v is not None)
return BaseModelOutputWithNoAttention(
last_hidden_state=hidden_state,
hidden_states=hidden_states,
)
|
class_definition
| 9,840 | 11,439 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,716 |
class RTDetrResNetPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = RTDetrResNetConfig
base_model_prefix = "resnet"
main_input_name = "pixel_values"
_no_split_modules = ["RTDetrResNetConvLayer", "RTDetrResNetShortCut"]
def _init_weights(self, module):
if isinstance(module, nn.Conv2d):
nn.init.kaiming_normal_(module.weight, mode="fan_out", nonlinearity="relu")
# copied from the `reset_parameters` method of `class Linear(Module)` in `torch`.
elif isinstance(module, nn.Linear):
nn.init.kaiming_uniform_(module.weight, a=math.sqrt(5))
if module.bias is not None:
fan_in, _ = nn.init._calculate_fan_in_and_fan_out(module.weight)
bound = 1 / math.sqrt(fan_in) if fan_in > 0 else 0
nn.init.uniform_(module.bias, -bound, bound)
elif isinstance(module, (nn.BatchNorm2d, nn.GroupNorm)):
nn.init.constant_(module.weight, 1)
nn.init.constant_(module.bias, 0)
|
class_definition
| 11,547 | 12,704 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,717 |
class RTDetrResNetBackbone(RTDetrResNetPreTrainedModel, BackboneMixin):
def __init__(self, config):
super().__init__(config)
super()._init_backbone(config)
self.num_features = [config.embedding_size] + config.hidden_sizes
self.embedder = RTDetrResNetEmbeddings(config)
self.encoder = RTDetrResNetEncoder(config)
# initialize weights and apply final processing
self.post_init()
@add_start_docstrings_to_model_forward(RTDETR_RESNET_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=BackboneOutput, config_class=_CONFIG_FOR_DOC)
def forward(
self, pixel_values: Tensor, output_hidden_states: Optional[bool] = None, return_dict: Optional[bool] = None
) -> BackboneOutput:
"""
Returns:
Examples:
```python
>>> from transformers import RTDetrResNetConfig, RTDetrResNetBackbone
>>> import torch
>>> config = RTDetrResNetConfig()
>>> model = RTDetrResNetBackbone(config)
>>> pixel_values = torch.randn(1, 3, 224, 224)
>>> with torch.no_grad():
... outputs = model(pixel_values)
>>> feature_maps = outputs.feature_maps
>>> list(feature_maps[-1].shape)
[1, 2048, 7, 7]
```"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
embedding_output = self.embedder(pixel_values)
outputs = self.encoder(embedding_output, output_hidden_states=True, return_dict=True)
hidden_states = outputs.hidden_states
feature_maps = ()
for idx, stage in enumerate(self.stage_names):
if stage in self.out_features:
feature_maps += (hidden_states[idx],)
if not return_dict:
output = (feature_maps,)
if output_hidden_states:
output += (outputs.hidden_states,)
return output
return BackboneOutput(
feature_maps=feature_maps,
hidden_states=outputs.hidden_states if output_hidden_states else None,
attentions=None,
)
|
class_definition
| 14,099 | 16,382 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modeling_rt_detr_resnet.py
| null | 4,718 |
class RTDetrConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`RTDetrModel`]. It is used to instantiate a
RT-DETR model according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a similar configuration to that of the RT-DETR
[checkpoing/todo](https://huggingface.co/checkpoing/todo) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
initializer_range (`float`, *optional*, defaults to 0.01):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
initializer_bias_prior_prob (`float`, *optional*):
The prior probability used by the bias initializer to initialize biases for `enc_score_head` and `class_embed`.
If `None`, `prior_prob` computed as `prior_prob = 1 / (num_labels + 1)` while initializing model weights.
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
batch_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the batch normalization layers.
backbone_config (`Dict`, *optional*, defaults to `RTDetrResNetConfig()`):
The configuration of the backbone model.
backbone (`str`, *optional*):
Name of backbone to use when `backbone_config` is `None`. If `use_pretrained_backbone` is `True`, this
will load the corresponding pretrained weights from the timm or transformers library. If `use_pretrained_backbone`
is `False`, this loads the backbone's config and uses that to initialize the backbone with random weights.
use_pretrained_backbone (`bool`, *optional*, defaults to `False`):
Whether to use pretrained weights for the backbone.
use_timm_backbone (`bool`, *optional*, defaults to `False`):
Whether to load `backbone` from the timm library. If `False`, the backbone is loaded from the transformers
library.
freeze_backbone_batch_norms (`bool`, *optional*, defaults to `True`):
Whether to freeze the batch normalization layers in the backbone.
backbone_kwargs (`dict`, *optional*):
Keyword arguments to be passed to AutoBackbone when loading from a checkpoint
e.g. `{'out_indices': (0, 1, 2, 3)}`. Cannot be specified if `backbone_config` is set.
encoder_hidden_dim (`int`, *optional*, defaults to 256):
Dimension of the layers in hybrid encoder.
encoder_in_channels (`list`, *optional*, defaults to `[512, 1024, 2048]`):
Multi level features input for encoder.
feat_strides (`List[int]`, *optional*, defaults to `[8, 16, 32]`):
Strides used in each feature map.
encoder_layers (`int`, *optional*, defaults to 1):
Total of layers to be used by the encoder.
encoder_ffn_dim (`int`, *optional*, defaults to 1024):
Dimension of the "intermediate" (often named feed-forward) layer in decoder.
encoder_attention_heads (`int`, *optional*, defaults to 8):
Number of attention heads for each attention layer in the Transformer encoder.
dropout (`float`, *optional*, defaults to 0.0):
The ratio for all dropout layers.
activation_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for activations inside the fully connected layer.
encode_proj_layers (`List[int]`, *optional*, defaults to `[2]`):
Indexes of the projected layers to be used in the encoder.
positional_encoding_temperature (`int`, *optional*, defaults to 10000):
The temperature parameter used to create the positional encodings.
encoder_activation_function (`str`, *optional*, defaults to `"gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
activation_function (`str`, *optional*, defaults to `"silu"`):
The non-linear activation function (function or string) in the general layer. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
eval_size (`Tuple[int, int]`, *optional*):
Height and width used to computes the effective height and width of the position embeddings after taking
into account the stride.
normalize_before (`bool`, *optional*, defaults to `False`):
Determine whether to apply layer normalization in the transformer encoder layer before self-attention and
feed-forward modules.
hidden_expansion (`float`, *optional*, defaults to 1.0):
Expansion ratio to enlarge the dimension size of RepVGGBlock and CSPRepLayer.
d_model (`int`, *optional*, defaults to 256):
Dimension of the layers exclude hybrid encoder.
num_queries (`int`, *optional*, defaults to 300):
Number of object queries.
decoder_in_channels (`list`, *optional*, defaults to `[256, 256, 256]`):
Multi level features dimension for decoder
decoder_ffn_dim (`int`, *optional*, defaults to 1024):
Dimension of the "intermediate" (often named feed-forward) layer in decoder.
num_feature_levels (`int`, *optional*, defaults to 3):
The number of input feature levels.
decoder_n_points (`int`, *optional*, defaults to 4):
The number of sampled keys in each feature level for each attention head in the decoder.
decoder_layers (`int`, *optional*, defaults to 6):
Number of decoder layers.
decoder_attention_heads (`int`, *optional*, defaults to 8):
Number of attention heads for each attention layer in the Transformer decoder.
decoder_activation_function (`str`, *optional*, defaults to `"relu"`):
The non-linear activation function (function or string) in the decoder. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
num_denoising (`int`, *optional*, defaults to 100):
The total number of denoising tasks or queries to be used for contrastive denoising.
label_noise_ratio (`float`, *optional*, defaults to 0.5):
The fraction of denoising labels to which random noise should be added.
box_noise_scale (`float`, *optional*, defaults to 1.0):
Scale or magnitude of noise to be added to the bounding boxes.
learn_initial_query (`bool`, *optional*, defaults to `False`):
Indicates whether the initial query embeddings for the decoder should be learned during training
anchor_image_size (`Tuple[int, int]`, *optional*):
Height and width of the input image used during evaluation to generate the bounding box anchors. If None, automatic generate anchor is applied.
disable_custom_kernels (`bool`, *optional*, defaults to `True`):
Whether to disable custom kernels.
with_box_refine (`bool`, *optional*, defaults to `True`):
Whether to apply iterative bounding box refinement, where each decoder layer refines the bounding boxes
based on the predictions from the previous layer.
is_encoder_decoder (`bool`, *optional*, defaults to `True`):
Whether the architecture has an encoder decoder structure.
matcher_alpha (`float`, *optional*, defaults to 0.25):
Parameter alpha used by the Hungarian Matcher.
matcher_gamma (`float`, *optional*, defaults to 2.0):
Parameter gamma used by the Hungarian Matcher.
matcher_class_cost (`float`, *optional*, defaults to 2.0):
The relative weight of the class loss used by the Hungarian Matcher.
matcher_bbox_cost (`float`, *optional*, defaults to 5.0):
The relative weight of the bounding box loss used by the Hungarian Matcher.
matcher_giou_cost (`float`, *optional*, defaults to 2.0):
The relative weight of the giou loss of used by the Hungarian Matcher.
use_focal_loss (`bool`, *optional*, defaults to `True`):
Parameter informing if focal focal should be used.
auxiliary_loss (`bool`, *optional*, defaults to `True`):
Whether auxiliary decoding losses (loss at each decoder layer) are to be used.
focal_loss_alpha (`float`, *optional*, defaults to 0.75):
Parameter alpha used to compute the focal loss.
focal_loss_gamma (`float`, *optional*, defaults to 2.0):
Parameter gamma used to compute the focal loss.
weight_loss_vfl (`float`, *optional*, defaults to 1.0):
Relative weight of the varifocal loss in the object detection loss.
weight_loss_bbox (`float`, *optional*, defaults to 5.0):
Relative weight of the L1 bounding box loss in the object detection loss.
weight_loss_giou (`float`, *optional*, defaults to 2.0):
Relative weight of the generalized IoU loss in the object detection loss.
eos_coefficient (`float`, *optional*, defaults to 0.0001):
Relative classification weight of the 'no-object' class in the object detection loss.
Examples:
```python
>>> from transformers import RTDetrConfig, RTDetrModel
>>> # Initializing a RT-DETR configuration
>>> configuration = RTDetrConfig()
>>> # Initializing a model (with random weights) from the configuration
>>> model = RTDetrModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "rt_detr"
layer_types = ["basic", "bottleneck"]
attribute_map = {
"hidden_size": "d_model",
"num_attention_heads": "encoder_attention_heads",
}
def __init__(
self,
initializer_range=0.01,
initializer_bias_prior_prob=None,
layer_norm_eps=1e-5,
batch_norm_eps=1e-5,
# backbone
backbone_config=None,
backbone=None,
use_pretrained_backbone=False,
use_timm_backbone=False,
freeze_backbone_batch_norms=True,
backbone_kwargs=None,
# encoder HybridEncoder
encoder_hidden_dim=256,
encoder_in_channels=[512, 1024, 2048],
feat_strides=[8, 16, 32],
encoder_layers=1,
encoder_ffn_dim=1024,
encoder_attention_heads=8,
dropout=0.0,
activation_dropout=0.0,
encode_proj_layers=[2],
positional_encoding_temperature=10000,
encoder_activation_function="gelu",
activation_function="silu",
eval_size=None,
normalize_before=False,
hidden_expansion=1.0,
# decoder RTDetrTransformer
d_model=256,
num_queries=300,
decoder_in_channels=[256, 256, 256],
decoder_ffn_dim=1024,
num_feature_levels=3,
decoder_n_points=4,
decoder_layers=6,
decoder_attention_heads=8,
decoder_activation_function="relu",
attention_dropout=0.0,
num_denoising=100,
label_noise_ratio=0.5,
box_noise_scale=1.0,
learn_initial_query=False,
anchor_image_size=None,
disable_custom_kernels=True,
with_box_refine=True,
is_encoder_decoder=True,
# Loss
matcher_alpha=0.25,
matcher_gamma=2.0,
matcher_class_cost=2.0,
matcher_bbox_cost=5.0,
matcher_giou_cost=2.0,
use_focal_loss=True,
auxiliary_loss=True,
focal_loss_alpha=0.75,
focal_loss_gamma=2.0,
weight_loss_vfl=1.0,
weight_loss_bbox=5.0,
weight_loss_giou=2.0,
eos_coefficient=1e-4,
**kwargs,
):
self.initializer_range = initializer_range
self.initializer_bias_prior_prob = initializer_bias_prior_prob
self.layer_norm_eps = layer_norm_eps
self.batch_norm_eps = batch_norm_eps
# backbone
if backbone_config is None and backbone is None:
logger.info(
"`backbone_config` and `backbone` are `None`. Initializing the config with the default `RTDetr-ResNet` backbone."
)
backbone_config = RTDetrResNetConfig(
num_channels=3,
embedding_size=64,
hidden_sizes=[256, 512, 1024, 2048],
depths=[3, 4, 6, 3],
layer_type="bottleneck",
hidden_act="relu",
downsample_in_first_stage=False,
downsample_in_bottleneck=False,
out_features=None,
out_indices=[2, 3, 4],
)
elif isinstance(backbone_config, dict):
backbone_model_type = backbone_config.pop("model_type")
config_class = CONFIG_MAPPING[backbone_model_type]
backbone_config = config_class.from_dict(backbone_config)
verify_backbone_config_arguments(
use_timm_backbone=use_timm_backbone,
use_pretrained_backbone=use_pretrained_backbone,
backbone=backbone,
backbone_config=backbone_config,
backbone_kwargs=backbone_kwargs,
)
self.backbone_config = backbone_config
self.backbone = backbone
self.use_pretrained_backbone = use_pretrained_backbone
self.use_timm_backbone = use_timm_backbone
self.freeze_backbone_batch_norms = freeze_backbone_batch_norms
self.backbone_kwargs = backbone_kwargs
# encoder
self.encoder_hidden_dim = encoder_hidden_dim
self.encoder_in_channels = encoder_in_channels
self.feat_strides = feat_strides
self.encoder_attention_heads = encoder_attention_heads
self.encoder_ffn_dim = encoder_ffn_dim
self.dropout = dropout
self.activation_dropout = activation_dropout
self.encode_proj_layers = encode_proj_layers
self.encoder_layers = encoder_layers
self.positional_encoding_temperature = positional_encoding_temperature
self.eval_size = eval_size
self.normalize_before = normalize_before
self.encoder_activation_function = encoder_activation_function
self.activation_function = activation_function
self.hidden_expansion = hidden_expansion
# decoder
self.d_model = d_model
self.num_queries = num_queries
self.decoder_ffn_dim = decoder_ffn_dim
self.decoder_in_channels = decoder_in_channels
self.num_feature_levels = num_feature_levels
self.decoder_n_points = decoder_n_points
self.decoder_layers = decoder_layers
self.decoder_attention_heads = decoder_attention_heads
self.decoder_activation_function = decoder_activation_function
self.attention_dropout = attention_dropout
self.num_denoising = num_denoising
self.label_noise_ratio = label_noise_ratio
self.box_noise_scale = box_noise_scale
self.learn_initial_query = learn_initial_query
self.anchor_image_size = anchor_image_size
self.auxiliary_loss = auxiliary_loss
self.disable_custom_kernels = disable_custom_kernels
self.with_box_refine = with_box_refine
# Loss
self.matcher_alpha = matcher_alpha
self.matcher_gamma = matcher_gamma
self.matcher_class_cost = matcher_class_cost
self.matcher_bbox_cost = matcher_bbox_cost
self.matcher_giou_cost = matcher_giou_cost
self.use_focal_loss = use_focal_loss
self.focal_loss_alpha = focal_loss_alpha
self.focal_loss_gamma = focal_loss_gamma
self.weight_loss_vfl = weight_loss_vfl
self.weight_loss_bbox = weight_loss_bbox
self.weight_loss_giou = weight_loss_giou
self.eos_coefficient = eos_coefficient
super().__init__(is_encoder_decoder=is_encoder_decoder, **kwargs)
@property
def num_attention_heads(self) -> int:
return self.encoder_attention_heads
@property
def hidden_size(self) -> int:
return self.d_model
@classmethod
def from_backbone_configs(cls, backbone_config: PretrainedConfig, **kwargs):
"""Instantiate a [`RTDetrConfig`] (or a derived class) from a pre-trained backbone model configuration and DETR model
configuration.
Args:
backbone_config ([`PretrainedConfig`]):
The backbone configuration.
Returns:
[`RTDetrConfig`]: An instance of a configuration object
"""
return cls(
backbone_config=backbone_config,
**kwargs,
)
|
class_definition
| 948 | 18,040 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/configuration_rt_detr.py
| null | 4,719 |
class RTDetrImageProcessorFast(DetrImageProcessorFast, BaseImageProcessorFast):
r"""
Constructs a fast RTDetr image processor.
Args:
format (`str`, *optional*, defaults to `AnnotationFormat.COCO_DETECTION`):
Data format of the annotations. One of "coco_detection" or "coco_panoptic".
do_resize (`bool`, *optional*, defaults to `True`):
Controls whether to resize the image's `(height, width)` dimensions to the specified `size`. Can be
overridden by the `do_resize` parameter in the `preprocess` method.
size (`Dict[str, int]` *optional*, defaults to `{"shortest_edge": 800, "longest_edge": 1333}`):
Size of the image's `(height, width)` dimensions after resizing. Can be overridden by the `size` parameter
in the `preprocess` method. Available options are:
- `{"height": int, "width": int}`: The image will be resized to the exact size `(height, width)`.
Do NOT keep the aspect ratio.
- `{"shortest_edge": int, "longest_edge": int}`: The image will be resized to a maximum size respecting
the aspect ratio and keeping the shortest edge less or equal to `shortest_edge` and the longest edge
less or equal to `longest_edge`.
- `{"max_height": int, "max_width": int}`: The image will be resized to the maximum size respecting the
aspect ratio and keeping the height less or equal to `max_height` and the width less or equal to
`max_width`.
resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BILINEAR`):
Resampling filter to use if resizing the image.
do_rescale (`bool`, *optional*, defaults to `True`):
Controls whether to rescale the image by the specified scale `rescale_factor`. Can be overridden by the
`do_rescale` parameter in the `preprocess` method.
rescale_factor (`int` or `float`, *optional*, defaults to `1/255`):
Scale factor to use if rescaling the image. Can be overridden by the `rescale_factor` parameter in the
`preprocess` method.
do_normalize (`bool`, *optional*, defaults to `False`):
Controls whether to normalize the image. Can be overridden by the `do_normalize` parameter in the
`preprocess` method.
image_mean (`float` or `List[float]`, *optional*, defaults to `IMAGENET_DEFAULT_MEAN`):
Mean values to use when normalizing the image. Can be a single value or a list of values, one for each
channel. Can be overridden by the `image_mean` parameter in the `preprocess` method.
image_std (`float` or `List[float]`, *optional*, defaults to `IMAGENET_DEFAULT_STD`):
Standard deviation values to use when normalizing the image. Can be a single value or a list of values, one
for each channel. Can be overridden by the `image_std` parameter in the `preprocess` method.
do_convert_annotations (`bool`, *optional*, defaults to `True`):
Controls whether to convert the annotations to the format expected by the RT_DETR model. Converts the
bounding boxes to the format `(center_x, center_y, width, height)` and in the range `[0, 1]`.
Can be overridden by the `do_convert_annotations` parameter in the `preprocess` method.
do_pad (`bool`, *optional*, defaults to `False`):
Controls whether to pad the image. Can be overridden by the `do_pad` parameter in the `preprocess`
method. If `True`, padding will be applied to the bottom and right of the image with zeros.
If `pad_size` is provided, the image will be padded to the specified dimensions.
Otherwise, the image will be padded to the maximum height and width of the batch.
pad_size (`Dict[str, int]`, *optional*):
The size `{"height": int, "width" int}` to pad the images to. Must be larger than any image size
provided for preprocessing. If `pad_size` is not provided, images will be padded to the largest
height and width in the batch.
"""
def __init__(
self,
format: Union[str, AnnotationFormat] = AnnotationFormat.COCO_DETECTION,
do_resize: bool = True,
size: Dict[str, int] = None,
resample: Union[PILImageResampling, "F.InterpolationMode"] = PILImageResampling.BILINEAR,
do_rescale: bool = True,
rescale_factor: Union[int, float] = 1 / 255,
do_normalize: bool = False,
image_mean: Union[float, List[float]] = None,
image_std: Union[float, List[float]] = None,
do_convert_annotations: bool = True,
do_pad: bool = False,
pad_size: Optional[Dict[str, int]] = None,
**kwargs,
) -> None:
size = size if size is not None else {"height": 640, "width": 640}
size = get_size_dict(size, default_to_square=False)
if do_convert_annotations is None:
do_convert_annotations = do_normalize
BaseImageProcessorFast.__init__(**kwargs)
self.format = format
self.do_resize = do_resize
self.size = size
self.resample = resample
self.do_rescale = do_rescale
self.rescale_factor = rescale_factor
self.do_normalize = do_normalize
self.do_convert_annotations = do_convert_annotations
self.image_mean = image_mean if image_mean is not None else IMAGENET_DEFAULT_MEAN
self.image_std = image_std if image_std is not None else IMAGENET_DEFAULT_STD
self.do_pad = do_pad
self.pad_size = pad_size
def prepare_annotation(
self,
image: torch.Tensor,
target: Dict,
format: Optional[AnnotationFormat] = None,
return_segmentation_masks: bool = None,
masks_path: Optional[Union[str, pathlib.Path]] = None,
input_data_format: Optional[Union[str, ChannelDimension]] = None,
) -> Dict:
format = format if format is not None else self.format
if format == AnnotationFormat.COCO_DETECTION:
return_segmentation_masks = False if return_segmentation_masks is None else return_segmentation_masks
target = prepare_coco_detection_annotation(
image, target, return_segmentation_masks, input_data_format=input_data_format
)
else:
raise ValueError(f"Format {format} is not supported.")
return target
@filter_out_non_signature_kwargs(extra=["device"])
def preprocess(
self,
images: ImageInput,
annotations: Optional[Union[AnnotationType, List[AnnotationType]]] = None,
return_segmentation_masks: bool = None,
masks_path: Optional[Union[str, pathlib.Path]] = None,
do_resize: Optional[bool] = None,
size: Optional[Dict[str, int]] = None,
resample: Optional[Union[PILImageResampling, "F.InterpolationMode"]] = None,
do_rescale: Optional[bool] = None,
rescale_factor: Optional[Union[int, float]] = None,
do_normalize: Optional[bool] = None,
do_convert_annotations: Optional[bool] = None,
image_mean: Optional[Union[float, List[float]]] = None,
image_std: Optional[Union[float, List[float]]] = None,
do_pad: Optional[bool] = None,
format: Optional[Union[str, AnnotationFormat]] = None,
return_tensors: Optional[Union[TensorType, str]] = None,
data_format: Union[str, ChannelDimension] = ChannelDimension.FIRST,
input_data_format: Optional[Union[str, ChannelDimension]] = None,
pad_size: Optional[Dict[str, int]] = None,
**kwargs,
) -> BatchFeature:
"""
Preprocess an image or a batch of images so that it can be used by the model.
Args:
images (`ImageInput`):
Image or batch of images to preprocess. Expects a single or batch of images with pixel values ranging
from 0 to 255. If passing in images with pixel values between 0 and 1, set `do_rescale=False`.
annotations (`AnnotationType` or `List[AnnotationType]`, *optional*):
List of annotations associated with the image or batch of images. If annotation is for object
detection, the annotations should be a dictionary with the following keys:
- "image_id" (`int`): The image id.
- "annotations" (`List[Dict]`): List of annotations for an image. Each annotation should be a
dictionary. An image can have no annotations, in which case the list should be empty.
If annotation is for segmentation, the annotations should be a dictionary with the following keys:
- "image_id" (`int`): The image id.
- "segments_info" (`List[Dict]`): List of segments for an image. Each segment should be a dictionary.
An image can have no segments, in which case the list should be empty.
- "file_name" (`str`): The file name of the image.
return_segmentation_masks (`bool`, *optional*, defaults to self.return_segmentation_masks):
Whether to return segmentation masks.
masks_path (`str` or `pathlib.Path`, *optional*):
Path to the directory containing the segmentation masks.
do_resize (`bool`, *optional*, defaults to self.do_resize):
Whether to resize the image.
size (`Dict[str, int]`, *optional*, defaults to self.size):
Size of the image's `(height, width)` dimensions after resizing. Available options are:
- `{"height": int, "width": int}`: The image will be resized to the exact size `(height, width)`.
Do NOT keep the aspect ratio.
- `{"shortest_edge": int, "longest_edge": int}`: The image will be resized to a maximum size respecting
the aspect ratio and keeping the shortest edge less or equal to `shortest_edge` and the longest edge
less or equal to `longest_edge`.
- `{"max_height": int, "max_width": int}`: The image will be resized to the maximum size respecting the
aspect ratio and keeping the height less or equal to `max_height` and the width less or equal to
`max_width`.
resample (`PILImageResampling` or `InterpolationMode`, *optional*, defaults to self.resample):
Resampling filter to use when resizing the image.
do_rescale (`bool`, *optional*, defaults to self.do_rescale):
Whether to rescale the image.
rescale_factor (`float`, *optional*, defaults to self.rescale_factor):
Rescale factor to use when rescaling the image.
do_normalize (`bool`, *optional*, defaults to self.do_normalize):
Whether to normalize the image.
do_convert_annotations (`bool`, *optional*, defaults to self.do_convert_annotations):
Whether to convert the annotations to the format expected by the model. Converts the bounding
boxes from the format `(top_left_x, top_left_y, width, height)` to `(center_x, center_y, width, height)`
and in relative coordinates.
image_mean (`float` or `List[float]`, *optional*, defaults to self.image_mean):
Mean to use when normalizing the image.
image_std (`float` or `List[float]`, *optional*, defaults to self.image_std):
Standard deviation to use when normalizing the image.
do_pad (`bool`, *optional*, defaults to self.do_pad):
Whether to pad the image. If `True`, padding will be applied to the bottom and right of
the image with zeros. If `pad_size` is provided, the image will be padded to the specified
dimensions. Otherwise, the image will be padded to the maximum height and width of the batch.
format (`str` or `AnnotationFormat`, *optional*, defaults to self.format):
Format of the annotations.
return_tensors (`str` or `TensorType`, *optional*, defaults to self.return_tensors):
Type of tensors to return. If `None`, will return the list of images.
data_format (`ChannelDimension` or `str`, *optional*, defaults to `ChannelDimension.FIRST`):
The channel dimension format for the output image. Can be one of:
- `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format.
- `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format.
- Unset: Use the channel dimension format of the input image.
input_data_format (`ChannelDimension` or `str`, *optional*):
The channel dimension format for the input image. If unset, the channel dimension format is inferred
from the input image. Can be one of:
- `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format.
- `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format.
- `"none"` or `ChannelDimension.NONE`: image in (height, width) format.
pad_size (`Dict[str, int]`, *optional*):
The size `{"height": int, "width" int}` to pad the images to. Must be larger than any image size
provided for preprocessing. If `pad_size` is not provided, images will be padded to the largest
height and width in the batch.
"""
do_resize = self.do_resize if do_resize is None else do_resize
size = self.size if size is None else size
size = get_size_dict(size=size, default_to_square=True)
resample = self.resample if resample is None else resample
do_rescale = self.do_rescale if do_rescale is None else do_rescale
rescale_factor = self.rescale_factor if rescale_factor is None else rescale_factor
do_normalize = self.do_normalize if do_normalize is None else do_normalize
image_mean = self.image_mean if image_mean is None else image_mean
image_std = self.image_std if image_std is None else image_std
do_convert_annotations = (
self.do_convert_annotations if do_convert_annotations is None else do_convert_annotations
)
do_pad = self.do_pad if do_pad is None else do_pad
pad_size = self.pad_size if pad_size is None else pad_size
format = self.format if format is None else format
return_tensors = "pt" if return_tensors is None else return_tensors
device = kwargs.pop("device", None)
# Make hashable for cache
size = SizeDict(**size)
image_mean = tuple(image_mean) if isinstance(image_mean, list) else image_mean
image_std = tuple(image_std) if isinstance(image_std, list) else image_std
images = make_list_of_images(images)
image_type = get_image_type(images[0])
if image_type not in [ImageType.PIL, ImageType.TORCH, ImageType.NUMPY]:
raise ValueError(f"Unsupported input image type {image_type}")
self._validate_input_arguments(
do_rescale=do_rescale,
rescale_factor=rescale_factor,
do_normalize=do_normalize,
image_mean=image_mean,
image_std=image_std,
do_resize=do_resize,
size=size,
resample=resample,
return_tensors=return_tensors,
data_format=data_format,
)
if annotations is not None and isinstance(annotations, dict):
annotations = [annotations]
if annotations is not None and len(images) != len(annotations):
raise ValueError(
f"The number of images ({len(images)}) and annotations ({len(annotations)}) do not match."
)
format = AnnotationFormat(format)
if annotations is not None:
validate_annotations(format, SUPPORTED_ANNOTATION_FORMATS, annotations)
data = {}
if image_type == ImageType.PIL:
images = [F.pil_to_tensor(image) for image in images]
elif image_type == ImageType.NUMPY:
# not using F.to_tensor as it doesn't handle (C, H, W) numpy arrays
images = [torch.from_numpy(image).contiguous() for image in images]
if device is not None:
images = [image.to(device) for image in images]
# We assume that all images have the same channel dimension format.
if input_data_format is None:
input_data_format = infer_channel_dimension_format(images[0])
if input_data_format == ChannelDimension.LAST:
images = [image.permute(2, 0, 1).contiguous() for image in images]
input_data_format = ChannelDimension.FIRST
if do_rescale and do_normalize:
# fused rescale and normalize
new_mean = torch.tensor(image_mean, device=images[0].device) * (1.0 / rescale_factor)
new_std = torch.tensor(image_std, device=images[0].device) * (1.0 / rescale_factor)
processed_images = []
processed_annotations = []
pixel_masks = [] # Initialize pixel_masks here
for image, annotation in zip(images, annotations if annotations is not None else [None] * len(images)):
# prepare (COCO annotations as a list of Dict -> DETR target as a single Dict per image)
if annotations is not None:
annotation = self.prepare_annotation(
image,
annotation,
format,
return_segmentation_masks=return_segmentation_masks,
masks_path=masks_path,
input_data_format=input_data_format,
)
if do_resize:
interpolation = (
pil_torch_interpolation_mapping[resample]
if isinstance(resample, (PILImageResampling, int))
else resample
)
resized_image = self.resize(image, size=size, interpolation=interpolation)
if annotations is not None:
annotation = self.resize_annotation(
annotation,
orig_size=image.size()[-2:],
target_size=resized_image.size()[-2:],
)
image = resized_image
if do_rescale and do_normalize:
# fused rescale and normalize
image = F.normalize(image.to(dtype=torch.float32), new_mean, new_std)
elif do_rescale:
image = image * rescale_factor
elif do_normalize:
image = F.normalize(image, image_mean, image_std)
if do_convert_annotations and annotations is not None:
annotation = self.normalize_annotation(annotation, get_image_size(image, input_data_format))
processed_images.append(image)
processed_annotations.append(annotation)
images = processed_images
annotations = processed_annotations if annotations is not None else None
if do_pad:
# depends on all resized image shapes so we need another loop
if pad_size is not None:
padded_size = (pad_size["height"], pad_size["width"])
else:
padded_size = get_max_height_width(images)
padded_images = []
padded_annotations = []
for image, annotation in zip(images, annotations if annotations is not None else [None] * len(images)):
# Pads images and returns their mask: {'pixel_values': ..., 'pixel_mask': ...}
if padded_size == image.size()[-2:]:
padded_images.append(image)
pixel_masks.append(torch.ones(padded_size, dtype=torch.int64, device=image.device))
padded_annotations.append(annotation)
continue
image, pixel_mask, annotation = self.pad(
image, padded_size, annotation=annotation, update_bboxes=do_convert_annotations
)
padded_images.append(image)
padded_annotations.append(annotation)
pixel_masks.append(pixel_mask)
images = padded_images
annotations = padded_annotations if annotations is not None else None
data.update({"pixel_mask": torch.stack(pixel_masks, dim=0)})
data.update({"pixel_values": torch.stack(images, dim=0)})
encoded_inputs = BatchFeature(data, tensor_type=return_tensors)
if annotations is not None:
encoded_inputs["labels"] = [
BatchFeature(annotation, tensor_type=return_tensors) for annotation in annotations
]
return encoded_inputs
def post_process_object_detection(
self,
outputs,
threshold: float = 0.5,
target_sizes: Union[TensorType, List[Tuple]] = None,
use_focal_loss: bool = True,
):
"""
Converts the raw output of [`DetrForObjectDetection`] into final bounding boxes in (top_left_x, top_left_y,
bottom_right_x, bottom_right_y) format. Only supports PyTorch.
Args:
outputs ([`DetrObjectDetectionOutput`]):
Raw outputs of the model.
threshold (`float`, *optional*, defaults to 0.5):
Score threshold to keep object detection predictions.
target_sizes (`torch.Tensor` or `List[Tuple[int, int]]`, *optional*):
Tensor of shape `(batch_size, 2)` or list of tuples (`Tuple[int, int]`) containing the target size
`(height, width)` of each image in the batch. If unset, predictions will not be resized.
use_focal_loss (`bool` defaults to `True`):
Variable informing if the focal loss was used to predict the outputs. If `True`, a sigmoid is applied
to compute the scores of each detection, otherwise, a softmax function is used.
Returns:
`List[Dict]`: A list of dictionaries, each dictionary containing the scores, labels and boxes for an image
in the batch as predicted by the model.
"""
requires_backends(self, ["torch"])
out_logits, out_bbox = outputs.logits, outputs.pred_boxes
# convert from relative cxcywh to absolute xyxy
boxes = center_to_corners_format(out_bbox)
if target_sizes is not None:
if len(out_logits) != len(target_sizes):
raise ValueError(
"Make sure that you pass in as many target sizes as the batch dimension of the logits"
)
if isinstance(target_sizes, List):
img_h, img_w = torch.as_tensor(target_sizes).unbind(1)
else:
img_h, img_w = target_sizes.unbind(1)
scale_fct = torch.stack([img_w, img_h, img_w, img_h], dim=1).to(boxes.device)
boxes = boxes * scale_fct[:, None, :]
num_top_queries = out_logits.shape[1]
num_classes = out_logits.shape[2]
if use_focal_loss:
scores = torch.nn.functional.sigmoid(out_logits)
scores, index = torch.topk(scores.flatten(1), num_top_queries, axis=-1)
labels = index % num_classes
index = index // num_classes
boxes = boxes.gather(dim=1, index=index.unsqueeze(-1).repeat(1, 1, boxes.shape[-1]))
else:
scores = torch.nn.functional.softmax(out_logits)[:, :, :-1]
scores, labels = scores.max(dim=-1)
if scores.shape[1] > num_top_queries:
scores, index = torch.topk(scores, num_top_queries, dim=-1)
labels = torch.gather(labels, dim=1, index=index)
boxes = torch.gather(boxes, dim=1, index=index.unsqueeze(-1).tile(1, 1, boxes.shape[-1]))
results = []
for score, label, box in zip(scores, labels, boxes):
results.append(
{
"scores": score[score > threshold],
"labels": label[score > threshold],
"boxes": box[score > threshold],
}
)
return results
def from_dict():
raise NotImplementedError("No need to override this method for RT-DETR yet.")
def post_process():
raise NotImplementedError("Post-processing is not implemented for RT-DETR yet.")
def post_process_segmentation():
raise NotImplementedError("Segmentation post-processing is not implemented for RT-DETR yet.")
def post_process_instance():
raise NotImplementedError("Instance post-processing is not implemented for RT-DETR yet.")
def post_process_panoptic():
raise NotImplementedError("Panoptic post-processing is not implemented for RT-DETR yet.")
def post_process_instance_segmentation():
raise NotImplementedError("Segmentation post-processing is not implemented for RT-DETR yet.")
def post_process_semantic_segmentation():
raise NotImplementedError("Semantic segmentation post-processing is not implemented for RT-DETR yet.")
def post_process_panoptic_segmentation():
raise NotImplementedError("Panoptic segmentation post-processing is not implemented for RT-DETR yet.")
|
class_definition
| 3,578 | 29,296 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/modular_rt_detr.py
| null | 4,720 |
class RTDetrImageProcessorFast(BaseImageProcessorFast):
r"""
Constructs a fast RTDetr image processor.
Args:
format (`str`, *optional*, defaults to `AnnotationFormat.COCO_DETECTION`):
Data format of the annotations. One of "coco_detection" or "coco_panoptic".
do_resize (`bool`, *optional*, defaults to `True`):
Controls whether to resize the image's `(height, width)` dimensions to the specified `size`. Can be
overridden by the `do_resize` parameter in the `preprocess` method.
size (`Dict[str, int]` *optional*, defaults to `{"shortest_edge": 800, "longest_edge": 1333}`):
Size of the image's `(height, width)` dimensions after resizing. Can be overridden by the `size` parameter
in the `preprocess` method. Available options are:
- `{"height": int, "width": int}`: The image will be resized to the exact size `(height, width)`.
Do NOT keep the aspect ratio.
- `{"shortest_edge": int, "longest_edge": int}`: The image will be resized to a maximum size respecting
the aspect ratio and keeping the shortest edge less or equal to `shortest_edge` and the longest edge
less or equal to `longest_edge`.
- `{"max_height": int, "max_width": int}`: The image will be resized to the maximum size respecting the
aspect ratio and keeping the height less or equal to `max_height` and the width less or equal to
`max_width`.
resample (`PILImageResampling`, *optional*, defaults to `PILImageResampling.BILINEAR`):
Resampling filter to use if resizing the image.
do_rescale (`bool`, *optional*, defaults to `True`):
Controls whether to rescale the image by the specified scale `rescale_factor`. Can be overridden by the
`do_rescale` parameter in the `preprocess` method.
rescale_factor (`int` or `float`, *optional*, defaults to `1/255`):
Scale factor to use if rescaling the image. Can be overridden by the `rescale_factor` parameter in the
`preprocess` method.
do_normalize (`bool`, *optional*, defaults to `False`):
Controls whether to normalize the image. Can be overridden by the `do_normalize` parameter in the
`preprocess` method.
image_mean (`float` or `List[float]`, *optional*, defaults to `IMAGENET_DEFAULT_MEAN`):
Mean values to use when normalizing the image. Can be a single value or a list of values, one for each
channel. Can be overridden by the `image_mean` parameter in the `preprocess` method.
image_std (`float` or `List[float]`, *optional*, defaults to `IMAGENET_DEFAULT_STD`):
Standard deviation values to use when normalizing the image. Can be a single value or a list of values, one
for each channel. Can be overridden by the `image_std` parameter in the `preprocess` method.
do_convert_annotations (`bool`, *optional*, defaults to `True`):
Controls whether to convert the annotations to the format expected by the RT_DETR model. Converts the
bounding boxes to the format `(center_x, center_y, width, height)` and in the range `[0, 1]`.
Can be overridden by the `do_convert_annotations` parameter in the `preprocess` method.
do_pad (`bool`, *optional*, defaults to `False`):
Controls whether to pad the image. Can be overridden by the `do_pad` parameter in the `preprocess`
method. If `True`, padding will be applied to the bottom and right of the image with zeros.
If `pad_size` is provided, the image will be padded to the specified dimensions.
Otherwise, the image will be padded to the maximum height and width of the batch.
pad_size (`Dict[str, int]`, *optional*):
The size `{"height": int, "width" int}` to pad the images to. Must be larger than any image size
provided for preprocessing. If `pad_size` is not provided, images will be padded to the largest
height and width in the batch.
"""
model_input_names = ["pixel_values", "pixel_mask"]
def __init__(
self,
format: Union[str, AnnotationFormat] = AnnotationFormat.COCO_DETECTION,
do_resize: bool = True,
size: Dict[str, int] = None,
resample: Union[PILImageResampling, "F.InterpolationMode"] = PILImageResampling.BILINEAR,
do_rescale: bool = True,
rescale_factor: Union[int, float] = 1 / 255,
do_normalize: bool = False,
image_mean: Union[float, List[float]] = None,
image_std: Union[float, List[float]] = None,
do_convert_annotations: bool = True,
do_pad: bool = False,
pad_size: Optional[Dict[str, int]] = None,
**kwargs,
) -> None:
size = size if size is not None else {"height": 640, "width": 640}
size = get_size_dict(size, default_to_square=False)
if do_convert_annotations is None:
do_convert_annotations = do_normalize
super().__init__(**kwargs)
self.format = format
self.do_resize = do_resize
self.size = size
self.resample = resample
self.do_rescale = do_rescale
self.rescale_factor = rescale_factor
self.do_normalize = do_normalize
self.do_convert_annotations = do_convert_annotations
self.image_mean = image_mean if image_mean is not None else IMAGENET_DEFAULT_MEAN
self.image_std = image_std if image_std is not None else IMAGENET_DEFAULT_STD
self.do_pad = do_pad
self.pad_size = pad_size
def prepare_annotation(
self,
image: torch.Tensor,
target: Dict,
format: Optional[AnnotationFormat] = None,
return_segmentation_masks: bool = None,
masks_path: Optional[Union[str, pathlib.Path]] = None,
input_data_format: Optional[Union[str, ChannelDimension]] = None,
) -> Dict:
"""
Prepare an annotation for feeding into RT_DETR model.
"""
format = format if format is not None else self.format
if format == AnnotationFormat.COCO_DETECTION:
return_segmentation_masks = False if return_segmentation_masks is None else return_segmentation_masks
target = prepare_coco_detection_annotation(
image, target, return_segmentation_masks, input_data_format=input_data_format
)
else:
raise ValueError(f"Format {format} is not supported.")
return target
def resize(
self,
image: torch.Tensor,
size: SizeDict,
interpolation: "F.InterpolationMode" = None,
**kwargs,
) -> torch.Tensor:
"""
Resize the image to the given size. Size can be `min_size` (scalar) or `(height, width)` tuple. If size is an
int, smaller edge of the image will be matched to this number.
Args:
image (`torch.Tensor`):
Image to resize.
size (`SizeDict`):
Size of the image's `(height, width)` dimensions after resizing. Available options are:
- `{"height": int, "width": int}`: The image will be resized to the exact size `(height, width)`.
Do NOT keep the aspect ratio.
- `{"shortest_edge": int, "longest_edge": int}`: The image will be resized to a maximum size respecting
the aspect ratio and keeping the shortest edge less or equal to `shortest_edge` and the longest edge
less or equal to `longest_edge`.
- `{"max_height": int, "max_width": int}`: The image will be resized to the maximum size respecting the
aspect ratio and keeping the height less or equal to `max_height` and the width less or equal to
`max_width`.
interpolation (`InterpolationMode`, *optional*, defaults to `InterpolationMode.BILINEAR`):
Resampling filter to use if resizing the image.
"""
interpolation = interpolation if interpolation is not None else F.InterpolationMode.BILINEAR
if size.shortest_edge and size.longest_edge:
# Resize the image so that the shortest edge or the longest edge is of the given size
# while maintaining the aspect ratio of the original image.
new_size = get_size_with_aspect_ratio(
image.size()[-2:],
size["shortest_edge"],
size["longest_edge"],
)
elif size.max_height and size.max_width:
new_size = get_image_size_for_max_height_width(image.size()[-2:], size["max_height"], size["max_width"])
elif size.height and size.width:
new_size = (size["height"], size["width"])
else:
raise ValueError(
"Size must contain 'height' and 'width' keys or 'shortest_edge' and 'longest_edge' keys. Got"
f" {size.keys()}."
)
image = F.resize(
image,
size=new_size,
interpolation=interpolation,
**kwargs,
)
return image
def resize_annotation(
self,
annotation: Dict[str, Any],
orig_size: Tuple[int, int],
target_size: Tuple[int, int],
threshold: float = 0.5,
interpolation: "F.InterpolationMode" = None,
):
"""
Resizes an annotation to a target size.
Args:
annotation (`Dict[str, Any]`):
The annotation dictionary.
orig_size (`Tuple[int, int]`):
The original size of the input image.
target_size (`Tuple[int, int]`):
The target size of the image, as returned by the preprocessing `resize` step.
threshold (`float`, *optional*, defaults to 0.5):
The threshold used to binarize the segmentation masks.
resample (`InterpolationMode`, defaults to `InterpolationMode.NEAREST`):
The resampling filter to use when resizing the masks.
"""
interpolation = interpolation if interpolation is not None else F.InterpolationMode.NEAREST
ratio_height, ratio_width = [target / orig for target, orig in zip(target_size, orig_size)]
new_annotation = {}
new_annotation["size"] = target_size
for key, value in annotation.items():
if key == "boxes":
boxes = value
scaled_boxes = boxes * torch.as_tensor(
[ratio_width, ratio_height, ratio_width, ratio_height], dtype=torch.float32, device=boxes.device
)
new_annotation["boxes"] = scaled_boxes
elif key == "area":
area = value
scaled_area = area * (ratio_width * ratio_height)
new_annotation["area"] = scaled_area
elif key == "masks":
masks = value[:, None]
masks = [F.resize(mask, target_size, interpolation=interpolation) for mask in masks]
masks = torch.stack(masks).to(torch.float32)
masks = masks[:, 0] > threshold
new_annotation["masks"] = masks
elif key == "size":
new_annotation["size"] = target_size
else:
new_annotation[key] = value
return new_annotation
def normalize_annotation(self, annotation: Dict, image_size: Tuple[int, int]) -> Dict:
image_height, image_width = image_size
norm_annotation = {}
for key, value in annotation.items():
if key == "boxes":
boxes = value
boxes = corners_to_center_format(boxes)
boxes /= torch.as_tensor(
[image_width, image_height, image_width, image_height], dtype=torch.float32, device=boxes.device
)
norm_annotation[key] = boxes
else:
norm_annotation[key] = value
return norm_annotation
def _update_annotation_for_padded_image(
self,
annotation: Dict,
input_image_size: Tuple[int, int],
output_image_size: Tuple[int, int],
padding,
update_bboxes,
) -> Dict:
"""
Update the annotation for a padded image.
"""
new_annotation = {}
new_annotation["size"] = output_image_size
ratio_height, ratio_width = (input / output for output, input in zip(output_image_size, input_image_size))
for key, value in annotation.items():
if key == "masks":
masks = value
masks = F.pad(
masks,
padding,
fill=0,
)
masks = safe_squeeze(masks, 1)
new_annotation["masks"] = masks
elif key == "boxes" and update_bboxes:
boxes = value
boxes *= torch.as_tensor([ratio_width, ratio_height, ratio_width, ratio_height], device=boxes.device)
new_annotation["boxes"] = boxes
elif key == "size":
new_annotation["size"] = output_image_size
else:
new_annotation[key] = value
return new_annotation
def pad(
self,
image: torch.Tensor,
padded_size: Tuple[int, int],
annotation: Optional[Dict[str, Any]] = None,
update_bboxes: bool = True,
fill: int = 0,
):
original_size = image.size()[-2:]
padding_bottom = padded_size[0] - original_size[0]
padding_right = padded_size[1] - original_size[1]
if padding_bottom < 0 or padding_right < 0:
raise ValueError(
f"Padding dimensions are negative. Please make sure that the padded size is larger than the "
f"original size. Got padded size: {padded_size}, original size: {original_size}."
)
if original_size != padded_size:
padding = [0, 0, padding_right, padding_bottom]
image = F.pad(image, padding, fill=fill)
if annotation is not None:
annotation = self._update_annotation_for_padded_image(
annotation, original_size, padded_size, padding, update_bboxes
)
# Make a pixel mask for the image, where 1 indicates a valid pixel and 0 indicates padding.
pixel_mask = torch.zeros(padded_size, dtype=torch.int64, device=image.device)
pixel_mask[: original_size[0], : original_size[1]] = 1
return image, pixel_mask, annotation
@functools.lru_cache(maxsize=1)
def _validate_input_arguments(
self,
do_rescale: bool,
rescale_factor: float,
do_normalize: bool,
image_mean: Union[float, List[float]],
image_std: Union[float, List[float]],
do_resize: bool,
size: Dict[str, int],
resample: "PILImageResampling",
data_format: Union[str, ChannelDimension],
return_tensors: Union[TensorType, str],
):
if return_tensors != "pt":
raise ValueError("Only returning PyTorch tensors is currently supported.")
if data_format != ChannelDimension.FIRST:
raise ValueError("Only channel first data format is currently supported.")
if do_resize and None in (size, resample):
raise ValueError("Size and resample must be specified if do_resize is True.")
if do_rescale and rescale_factor is None:
raise ValueError("Rescale factor must be specified if do_rescale is True.")
if do_normalize and None in (image_mean, image_std):
raise ValueError("Image mean and standard deviation must be specified if do_normalize is True.")
@filter_out_non_signature_kwargs(extra=["device"])
def preprocess(
self,
images: ImageInput,
annotations: Optional[Union[AnnotationType, List[AnnotationType]]] = None,
return_segmentation_masks: bool = None,
masks_path: Optional[Union[str, pathlib.Path]] = None,
do_resize: Optional[bool] = None,
size: Optional[Dict[str, int]] = None,
resample: Optional[Union[PILImageResampling, "F.InterpolationMode"]] = None,
do_rescale: Optional[bool] = None,
rescale_factor: Optional[Union[int, float]] = None,
do_normalize: Optional[bool] = None,
do_convert_annotations: Optional[bool] = None,
image_mean: Optional[Union[float, List[float]]] = None,
image_std: Optional[Union[float, List[float]]] = None,
do_pad: Optional[bool] = None,
format: Optional[Union[str, AnnotationFormat]] = None,
return_tensors: Optional[Union[TensorType, str]] = None,
data_format: Union[str, ChannelDimension] = ChannelDimension.FIRST,
input_data_format: Optional[Union[str, ChannelDimension]] = None,
pad_size: Optional[Dict[str, int]] = None,
**kwargs,
) -> BatchFeature:
"""
Preprocess an image or a batch of images so that it can be used by the model.
Args:
images (`ImageInput`):
Image or batch of images to preprocess. Expects a single or batch of images with pixel values ranging
from 0 to 255. If passing in images with pixel values between 0 and 1, set `do_rescale=False`.
annotations (`AnnotationType` or `List[AnnotationType]`, *optional*):
List of annotations associated with the image or batch of images. If annotation is for object
detection, the annotations should be a dictionary with the following keys:
- "image_id" (`int`): The image id.
- "annotations" (`List[Dict]`): List of annotations for an image. Each annotation should be a
dictionary. An image can have no annotations, in which case the list should be empty.
If annotation is for segmentation, the annotations should be a dictionary with the following keys:
- "image_id" (`int`): The image id.
- "segments_info" (`List[Dict]`): List of segments for an image. Each segment should be a dictionary.
An image can have no segments, in which case the list should be empty.
- "file_name" (`str`): The file name of the image.
return_segmentation_masks (`bool`, *optional*, defaults to self.return_segmentation_masks):
Whether to return segmentation masks.
masks_path (`str` or `pathlib.Path`, *optional*):
Path to the directory containing the segmentation masks.
do_resize (`bool`, *optional*, defaults to self.do_resize):
Whether to resize the image.
size (`Dict[str, int]`, *optional*, defaults to self.size):
Size of the image's `(height, width)` dimensions after resizing. Available options are:
- `{"height": int, "width": int}`: The image will be resized to the exact size `(height, width)`.
Do NOT keep the aspect ratio.
- `{"shortest_edge": int, "longest_edge": int}`: The image will be resized to a maximum size respecting
the aspect ratio and keeping the shortest edge less or equal to `shortest_edge` and the longest edge
less or equal to `longest_edge`.
- `{"max_height": int, "max_width": int}`: The image will be resized to the maximum size respecting the
aspect ratio and keeping the height less or equal to `max_height` and the width less or equal to
`max_width`.
resample (`PILImageResampling` or `InterpolationMode`, *optional*, defaults to self.resample):
Resampling filter to use when resizing the image.
do_rescale (`bool`, *optional*, defaults to self.do_rescale):
Whether to rescale the image.
rescale_factor (`float`, *optional*, defaults to self.rescale_factor):
Rescale factor to use when rescaling the image.
do_normalize (`bool`, *optional*, defaults to self.do_normalize):
Whether to normalize the image.
do_convert_annotations (`bool`, *optional*, defaults to self.do_convert_annotations):
Whether to convert the annotations to the format expected by the model. Converts the bounding
boxes from the format `(top_left_x, top_left_y, width, height)` to `(center_x, center_y, width, height)`
and in relative coordinates.
image_mean (`float` or `List[float]`, *optional*, defaults to self.image_mean):
Mean to use when normalizing the image.
image_std (`float` or `List[float]`, *optional*, defaults to self.image_std):
Standard deviation to use when normalizing the image.
do_pad (`bool`, *optional*, defaults to self.do_pad):
Whether to pad the image. If `True`, padding will be applied to the bottom and right of
the image with zeros. If `pad_size` is provided, the image will be padded to the specified
dimensions. Otherwise, the image will be padded to the maximum height and width of the batch.
format (`str` or `AnnotationFormat`, *optional*, defaults to self.format):
Format of the annotations.
return_tensors (`str` or `TensorType`, *optional*, defaults to self.return_tensors):
Type of tensors to return. If `None`, will return the list of images.
data_format (`ChannelDimension` or `str`, *optional*, defaults to `ChannelDimension.FIRST`):
The channel dimension format for the output image. Can be one of:
- `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format.
- `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format.
- Unset: Use the channel dimension format of the input image.
input_data_format (`ChannelDimension` or `str`, *optional*):
The channel dimension format for the input image. If unset, the channel dimension format is inferred
from the input image. Can be one of:
- `"channels_first"` or `ChannelDimension.FIRST`: image in (num_channels, height, width) format.
- `"channels_last"` or `ChannelDimension.LAST`: image in (height, width, num_channels) format.
- `"none"` or `ChannelDimension.NONE`: image in (height, width) format.
pad_size (`Dict[str, int]`, *optional*):
The size `{"height": int, "width" int}` to pad the images to. Must be larger than any image size
provided for preprocessing. If `pad_size` is not provided, images will be padded to the largest
height and width in the batch.
"""
do_resize = self.do_resize if do_resize is None else do_resize
size = self.size if size is None else size
size = get_size_dict(size=size, default_to_square=True)
resample = self.resample if resample is None else resample
do_rescale = self.do_rescale if do_rescale is None else do_rescale
rescale_factor = self.rescale_factor if rescale_factor is None else rescale_factor
do_normalize = self.do_normalize if do_normalize is None else do_normalize
image_mean = self.image_mean if image_mean is None else image_mean
image_std = self.image_std if image_std is None else image_std
do_convert_annotations = (
self.do_convert_annotations if do_convert_annotations is None else do_convert_annotations
)
do_pad = self.do_pad if do_pad is None else do_pad
pad_size = self.pad_size if pad_size is None else pad_size
format = self.format if format is None else format
return_tensors = "pt" if return_tensors is None else return_tensors
device = kwargs.pop("device", None)
# Make hashable for cache
size = SizeDict(**size)
image_mean = tuple(image_mean) if isinstance(image_mean, list) else image_mean
image_std = tuple(image_std) if isinstance(image_std, list) else image_std
images = make_list_of_images(images)
image_type = get_image_type(images[0])
if image_type not in [ImageType.PIL, ImageType.TORCH, ImageType.NUMPY]:
raise ValueError(f"Unsupported input image type {image_type}")
self._validate_input_arguments(
do_rescale=do_rescale,
rescale_factor=rescale_factor,
do_normalize=do_normalize,
image_mean=image_mean,
image_std=image_std,
do_resize=do_resize,
size=size,
resample=resample,
return_tensors=return_tensors,
data_format=data_format,
)
if annotations is not None and isinstance(annotations, dict):
annotations = [annotations]
if annotations is not None and len(images) != len(annotations):
raise ValueError(
f"The number of images ({len(images)}) and annotations ({len(annotations)}) do not match."
)
format = AnnotationFormat(format)
if annotations is not None:
validate_annotations(format, SUPPORTED_ANNOTATION_FORMATS, annotations)
data = {}
if image_type == ImageType.PIL:
images = [F.pil_to_tensor(image) for image in images]
elif image_type == ImageType.NUMPY:
# not using F.to_tensor as it doesn't handle (C, H, W) numpy arrays
images = [torch.from_numpy(image).contiguous() for image in images]
if device is not None:
images = [image.to(device) for image in images]
# We assume that all images have the same channel dimension format.
if input_data_format is None:
input_data_format = infer_channel_dimension_format(images[0])
if input_data_format == ChannelDimension.LAST:
images = [image.permute(2, 0, 1).contiguous() for image in images]
input_data_format = ChannelDimension.FIRST
if do_rescale and do_normalize:
# fused rescale and normalize
new_mean = torch.tensor(image_mean, device=images[0].device) * (1.0 / rescale_factor)
new_std = torch.tensor(image_std, device=images[0].device) * (1.0 / rescale_factor)
processed_images = []
processed_annotations = []
pixel_masks = [] # Initialize pixel_masks here
for image, annotation in zip(images, annotations if annotations is not None else [None] * len(images)):
# prepare (COCO annotations as a list of Dict -> DETR target as a single Dict per image)
if annotations is not None:
annotation = self.prepare_annotation(
image,
annotation,
format,
return_segmentation_masks=return_segmentation_masks,
masks_path=masks_path,
input_data_format=input_data_format,
)
if do_resize:
interpolation = (
pil_torch_interpolation_mapping[resample]
if isinstance(resample, (PILImageResampling, int))
else resample
)
resized_image = self.resize(image, size=size, interpolation=interpolation)
if annotations is not None:
annotation = self.resize_annotation(
annotation,
orig_size=image.size()[-2:],
target_size=resized_image.size()[-2:],
)
image = resized_image
if do_rescale and do_normalize:
# fused rescale and normalize
image = F.normalize(image.to(dtype=torch.float32), new_mean, new_std)
elif do_rescale:
image = image * rescale_factor
elif do_normalize:
image = F.normalize(image, image_mean, image_std)
if do_convert_annotations and annotations is not None:
annotation = self.normalize_annotation(annotation, get_image_size(image, input_data_format))
processed_images.append(image)
processed_annotations.append(annotation)
images = processed_images
annotations = processed_annotations if annotations is not None else None
if do_pad:
# depends on all resized image shapes so we need another loop
if pad_size is not None:
padded_size = (pad_size["height"], pad_size["width"])
else:
padded_size = get_max_height_width(images)
padded_images = []
padded_annotations = []
for image, annotation in zip(images, annotations if annotations is not None else [None] * len(images)):
# Pads images and returns their mask: {'pixel_values': ..., 'pixel_mask': ...}
if padded_size == image.size()[-2:]:
padded_images.append(image)
pixel_masks.append(torch.ones(padded_size, dtype=torch.int64, device=image.device))
padded_annotations.append(annotation)
continue
image, pixel_mask, annotation = self.pad(
image, padded_size, annotation=annotation, update_bboxes=do_convert_annotations
)
padded_images.append(image)
padded_annotations.append(annotation)
pixel_masks.append(pixel_mask)
images = padded_images
annotations = padded_annotations if annotations is not None else None
data.update({"pixel_mask": torch.stack(pixel_masks, dim=0)})
data.update({"pixel_values": torch.stack(images, dim=0)})
encoded_inputs = BatchFeature(data, tensor_type=return_tensors)
if annotations is not None:
encoded_inputs["labels"] = [
BatchFeature(annotation, tensor_type=return_tensors) for annotation in annotations
]
return encoded_inputs
def post_process_object_detection(
self,
outputs,
threshold: float = 0.5,
target_sizes: Union[TensorType, List[Tuple]] = None,
use_focal_loss: bool = True,
):
"""
Converts the raw output of [`DetrForObjectDetection`] into final bounding boxes in (top_left_x, top_left_y,
bottom_right_x, bottom_right_y) format. Only supports PyTorch.
Args:
outputs ([`DetrObjectDetectionOutput`]):
Raw outputs of the model.
threshold (`float`, *optional*, defaults to 0.5):
Score threshold to keep object detection predictions.
target_sizes (`torch.Tensor` or `List[Tuple[int, int]]`, *optional*):
Tensor of shape `(batch_size, 2)` or list of tuples (`Tuple[int, int]`) containing the target size
`(height, width)` of each image in the batch. If unset, predictions will not be resized.
use_focal_loss (`bool` defaults to `True`):
Variable informing if the focal loss was used to predict the outputs. If `True`, a sigmoid is applied
to compute the scores of each detection, otherwise, a softmax function is used.
Returns:
`List[Dict]`: A list of dictionaries, each dictionary containing the scores, labels and boxes for an image
in the batch as predicted by the model.
"""
requires_backends(self, ["torch"])
out_logits, out_bbox = outputs.logits, outputs.pred_boxes
# convert from relative cxcywh to absolute xyxy
boxes = center_to_corners_format(out_bbox)
if target_sizes is not None:
if len(out_logits) != len(target_sizes):
raise ValueError(
"Make sure that you pass in as many target sizes as the batch dimension of the logits"
)
if isinstance(target_sizes, List):
img_h, img_w = torch.as_tensor(target_sizes).unbind(1)
else:
img_h, img_w = target_sizes.unbind(1)
scale_fct = torch.stack([img_w, img_h, img_w, img_h], dim=1).to(boxes.device)
boxes = boxes * scale_fct[:, None, :]
num_top_queries = out_logits.shape[1]
num_classes = out_logits.shape[2]
if use_focal_loss:
scores = torch.nn.functional.sigmoid(out_logits)
scores, index = torch.topk(scores.flatten(1), num_top_queries, axis=-1)
labels = index % num_classes
index = index // num_classes
boxes = boxes.gather(dim=1, index=index.unsqueeze(-1).repeat(1, 1, boxes.shape[-1]))
else:
scores = torch.nn.functional.softmax(out_logits)[:, :, :-1]
scores, labels = scores.max(dim=-1)
if scores.shape[1] > num_top_queries:
scores, index = torch.topk(scores, num_top_queries, dim=-1)
labels = torch.gather(labels, dim=1, index=index)
boxes = torch.gather(boxes, dim=1, index=index.unsqueeze(-1).tile(1, 1, boxes.shape[-1]))
results = []
for score, label, box in zip(scores, labels, boxes):
results.append(
{
"scores": score[score > threshold],
"labels": label[score > threshold],
"boxes": box[score > threshold],
}
)
return results
|
class_definition
| 4,460 | 38,541 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/rt_detr/image_processing_rt_detr_fast.py
| null | 4,721 |
class JetMoeParallelExperts(nn.Module):
def __init__(self, num_experts: int, input_size: int, output_size: int) -> None:
"""
Initialize the JetMoeParallelExperts module.
The experts weights are stored in [num_experts, output_size, input_size] format. Such that it's comptible with
many MoE libraries, such as [Megablock](https://github.com/databricks/megablocks) and
[ScatterMoE](https://github.com/shawntan/scattermoe), as well as the
[MoE kernel](https://github.com/vllm-project/vllm/blob/main/vllm/model_executor/layers/fused_moe/fused_moe.py)
used in vllm.
Args:
num_experts (int):
Number of experts.
input_size (int):
Size of the input.
output_size (int):
Size of the output.
"""
super().__init__()
self.weight = nn.Parameter(torch.empty(num_experts, output_size, input_size))
self.num_experts = num_experts
self.input_size = input_size
self.output_size = output_size
def forward(self, inputs, expert_size):
"""
Forward pass of the JetMoeParallelExperts module.
Args:
inputs (Tensor):
Input tensor.
expert_size:
Expert size information.
Returns:
Tensor: Output tensor.
"""
input_list = inputs.split(expert_size, dim=0)
output_list = []
for i in range(self.num_experts):
output_list.append(F.linear(input_list[i], self.weight[i]))
results = torch.cat(output_list, dim=0)
return results
|
class_definition
| 5,356 | 7,013 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,722 |
class JetMoeTopKGating(nn.Module):
def __init__(self, input_size: int, num_experts: int, top_k: int):
"""
Initialize the top-k gating mechanism.
Args:
input_size (`int`):
Size of the input.
num_experts (`int`):
Number of experts.
top_k (`int`):
Number of top experts to select.
"""
super().__init__()
self.num_experts = num_experts
self.input_size = input_size
self.top_k = top_k
self.layer = nn.Linear(input_size, num_experts, bias=False)
def forward(self, hidden_states):
# compute the top_k routing decision
logits = self.layer(hidden_states).float() # [batch_size x seq_len, num_experts]
top_k_logits, top_k_indices = logits.topk(self.top_k, dim=1) # [num_tokens, top_k]
top_k_gates = torch.softmax(top_k_logits, dim=1).type_as(hidden_states) # [num_tokens, top_k]
# compute number of input given to each expert
zeros = torch.zeros(
[top_k_gates.size(0), self.num_experts], dtype=top_k_gates.dtype, device=top_k_gates.device
) # [num_tokens, num_experts]
gates = zeros.scatter(1, top_k_indices, 1) # [num_tokens, num_experts]
expert_size = gates.long().sum(0) # [num_experts,]
expert_size = expert_size.tolist()
# sort and group input tokens according to expert assignment
top_k_experts = top_k_indices.flatten() # [num_tokens * top_k]
_, index_sorted_experts = top_k_experts.sort(0) # [num_tokens * top_k]
batch_index = index_sorted_experts.div(self.top_k, rounding_mode="trunc") # [num_tokens * top_k]
# gather the gate values for grouped input tokens
top_k_gates = top_k_gates.flatten() # [num_tokens * top_k]
batch_gates = top_k_gates[index_sorted_experts] # [num_tokens * top_k]
return index_sorted_experts, batch_index, batch_gates, expert_size, logits
|
class_definition
| 7,016 | 9,017 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,723 |
class JetMoeMoE(nn.Module):
"""
A Sparsely gated mixture of experts layer with 1-layer Feed-Forward networks as experts.
Args:
config:
Configuration object with model hyperparameters.
"""
def __init__(self, config: JetMoeConfig):
super(JetMoeMoE, self).__init__()
self.input_size = config.hidden_size
self.hidden_size = config.intermediate_size
self.activation = ACT2FN[config.activation_function]
self.bias = torch.nn.Parameter(torch.empty(self.input_size))
self.input_linear = JetMoeParallelExperts(config.num_local_experts, self.input_size, self.hidden_size * 2)
self.output_linear = JetMoeParallelExperts(config.num_local_experts, self.hidden_size, self.input_size)
self.router = JetMoeTopKGating(
input_size=self.input_size,
num_experts=config.num_local_experts,
top_k=config.num_experts_per_tok,
)
def forward(self, layer_input):
"""
Forward pass of the mixture of experts layer.
Args:
layer_input (Tensor):
Input tensor.
Returns:
Tensor:
Output tensor.
Tensor:
Router logits.
"""
bsz, length, emb_size = layer_input.size()
layer_input = layer_input.reshape(-1, emb_size)
_, batch_index, batch_gates, expert_size, router_logits = self.router(layer_input)
expert_inputs = layer_input[batch_index]
hidden_states = self.input_linear(expert_inputs, expert_size)
chunked_hidden_states = hidden_states.chunk(2, dim=-1)
hidden_states = self.activation(chunked_hidden_states[0]) * chunked_hidden_states[1]
expert_outputs = self.output_linear(hidden_states, expert_size)
expert_outputs = expert_outputs * batch_gates[:, None]
zeros = torch.zeros((bsz * length, self.input_size), dtype=expert_outputs.dtype, device=expert_outputs.device)
layer_output = zeros.index_add(0, batch_index, expert_outputs)
layer_output = layer_output.view(bsz, length, self.input_size)
layer_output = layer_output + self.bias
return layer_output, router_logits
|
class_definition
| 9,020 | 11,252 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,724 |
class JetMoeMoA(nn.Module):
"""
A Sparsely gated mixture of attention layer with pairs of query- and output-projections as experts.
Args:
config:
Configuration object with model hyperparameters.
"""
def __init__(self, config: JetMoeConfig):
super(JetMoeMoA, self).__init__()
self.num_experts = config.num_local_experts
self.input_size = config.hidden_size
self.hidden_size = config.kv_channels * config.num_key_value_heads
self.top_k = config.num_experts_per_tok
self.bias = torch.nn.Parameter(torch.empty(self.input_size))
self.input_linear = JetMoeParallelExperts(self.num_experts, self.input_size, self.hidden_size)
self.output_linear = JetMoeParallelExperts(self.num_experts, self.hidden_size, self.input_size)
self.router = JetMoeTopKGating(
input_size=self.input_size,
num_experts=self.num_experts,
top_k=self.top_k,
)
def map(self, layer_input):
"""
Map inputs to attention experts according to routing decision and compute query projection inside each experts.
"""
# Compute gating topology
bsz, length, emb_size = layer_input.size()
layer_input = layer_input.reshape(-1, emb_size) # [bsz * length, emb_size]
index_sorted_experts, batch_index, batch_gates, expert_size, router_logits = self.router(layer_input)
topo_info = (index_sorted_experts, batch_index, batch_gates, expert_size)
# Group inputs according to topology and compute query projection
expert_inputs = layer_input[batch_index] # [bsz * length * top_k, emb_size]
expert_outputs = self.input_linear(expert_inputs, expert_size) # [bsz * length * top_k, hidden_size]
# Ungroup queries back to original order
zeros = torch.zeros(
(bsz * length * self.top_k, self.hidden_size), dtype=expert_outputs.dtype, device=expert_outputs.device
)
layer_output = zeros.index_add(0, index_sorted_experts, expert_outputs)
layer_output = layer_output.view(bsz, length, self.top_k, -1) # [bsz, length, top_k, hidden_size]
return layer_output, router_logits, topo_info
def reduce(self, layer_input, topo_info):
"""
Compute output projection inside each attention experts and merge the outputs of different experts.
"""
bsz, length, k, hidden_size = layer_input.size()
layer_input = layer_input.reshape(-1, hidden_size) # [bsz * length * k, hidden_size]
index_sorted_experts, batch_index, batch_gates, expert_size = topo_info
# Group inputs according to topology and compute output projection
expert_inputs = layer_input[index_sorted_experts] # [bsz * length * top_k, hidden_size]
expert_outputs = self.output_linear(expert_inputs, expert_size) # [bsz * length * top_k, emb_size]
# Apply gates to attention expert outputs
expert_outputs = expert_outputs * batch_gates[:, None]
# Ungroup and merge outputs to original order
zeros = torch.zeros((bsz * length, self.input_size), dtype=expert_outputs.dtype, device=expert_outputs.device)
layer_output = zeros.index_add(0, batch_index, expert_outputs)
layer_output = layer_output.view(bsz, length, self.input_size)
layer_output = layer_output + self.bias
return layer_output
def forward(self, layer_input):
raise NotImplementedError("This module doesn't support call and forward.")
|
class_definition
| 11,255 | 14,812 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,725 |
class JetMoeRMSNorm(nn.Module):
def __init__(self, hidden_size, eps=1e-6):
"""
JetMoeRMSNorm is equivalent to T5LayerNorm
"""
super().__init__()
self.weight = nn.Parameter(torch.ones(hidden_size))
self.variance_epsilon = eps
def forward(self, hidden_states):
input_dtype = hidden_states.dtype
hidden_states = hidden_states.to(torch.float32)
variance = hidden_states.pow(2).mean(-1, keepdim=True)
hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon)
return self.weight * hidden_states.to(input_dtype)
def extra_repr(self):
return f"{tuple(self.weight.shape)}, eps={self.variance_epsilon}"
|
class_definition
| 14,902 | 15,624 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,726 |
class JetMoeRotaryEmbedding(nn.Module):
def __init__(self, config: JetMoeConfig, device=None):
super().__init__()
# BC: "rope_type" was originally "type"
if hasattr(config, "rope_scaling") and config.rope_scaling is not None:
self.rope_type = config.rope_scaling.get("rope_type", config.rope_scaling.get("type"))
else:
self.rope_type = "default"
self.max_seq_len_cached = config.max_position_embeddings
self.original_max_seq_len = config.max_position_embeddings
self.config = config
self.rope_init_fn = ROPE_INIT_FUNCTIONS[self.rope_type]
inv_freq, self.attention_scaling = self.rope_init_fn(self.config, device)
self.register_buffer("inv_freq", inv_freq, persistent=False)
self.original_inv_freq = self.inv_freq
def _dynamic_frequency_update(self, position_ids, device):
"""
dynamic RoPE layers should recompute `inv_freq` in the following situations:
1 - growing beyond the cached sequence length (allow scaling)
2 - the current sequence length is in the original scale (avoid losing precision with small sequences)
"""
seq_len = torch.max(position_ids) + 1
if seq_len > self.max_seq_len_cached: # growth
inv_freq, self.attention_scaling = self.rope_init_fn(self.config, device, seq_len=seq_len)
self.register_buffer("inv_freq", inv_freq, persistent=False) # TODO joao: may break with compilation
self.max_seq_len_cached = seq_len
if seq_len < self.original_max_seq_len and self.max_seq_len_cached > self.original_max_seq_len: # reset
# This .to() is needed if the model has been moved to a device after being initialized (because
# the buffer is automatically moved, but not the original copy)
self.original_inv_freq = self.original_inv_freq.to(device)
self.register_buffer("inv_freq", self.original_inv_freq, persistent=False)
self.max_seq_len_cached = self.original_max_seq_len
@torch.no_grad()
def forward(self, x, position_ids):
if "dynamic" in self.rope_type:
self._dynamic_frequency_update(position_ids, device=x.device)
# Core RoPE block
inv_freq_expanded = self.inv_freq[None, :, None].float().expand(position_ids.shape[0], -1, 1)
position_ids_expanded = position_ids[:, None, :].float()
# Force float32 (see https://github.com/huggingface/transformers/pull/29285)
device_type = x.device.type
device_type = device_type if isinstance(device_type, str) and device_type != "mps" else "cpu"
with torch.autocast(device_type=device_type, enabled=False):
freqs = (inv_freq_expanded.float() @ position_ids_expanded.float()).transpose(1, 2)
emb = torch.cat((freqs, freqs), dim=-1)
cos = emb.cos()
sin = emb.sin()
# Advanced RoPE types (e.g. yarn) apply a post-processing scaling factor, equivalent to scaling attention
cos = cos * self.attention_scaling
sin = sin * self.attention_scaling
return cos.to(dtype=x.dtype), sin.to(dtype=x.dtype)
|
class_definition
| 15,722 | 18,919 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,727 |
class JetMoeAttention(nn.Module):
"""
Multi-headed attention from 'Attention Is All You Need' paper.
"""
def __init__(self, config: JetMoeConfig, layer_idx: Optional[int] = None):
"""
Initialize the JetMoeAttention module.
Args:
config:
Configuration object with model hyperparameters.
layer_idx:
Index of the layer in the model.
"""
super().__init__()
self.config = config
self.layer_idx = layer_idx
self.is_causal = True
if layer_idx is None:
logger.warning_once(
f"Instantiating {self.__class__.__name__} without passing a `layer_idx` is not recommended and will "
"lead to errors during the forward call if caching is used. Please make sure to provide a `layer_idx` "
"when creating this class."
)
self.top_k = config.num_experts_per_tok
self.attention_dropout = config.attention_dropout
self.kv_projection_size = config.kv_channels * config.num_key_value_heads
self.num_key_value_heads = config.num_key_value_heads
self.num_heads = config.num_attention_heads
self.head_dim = config.kv_channels
self.experts = JetMoeMoA(config)
self.kv_proj = torch.nn.Linear(config.hidden_size, self.kv_projection_size * 2, bias=False)
self.rotary_emb = JetMoeRotaryEmbedding(config)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Cache] = None,
output_attentions: bool = False,
use_cache: bool = False,
cache_position: Optional[torch.LongTensor] = None,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
bsz, q_len, _ = hidden_states.size()
query_states, router_logits, topo_info = self.experts.map(hidden_states)
key_states, value_states = self.kv_proj(hidden_states).chunk(2, dim=-1)
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
cos, sin = self.rotary_emb(value_states, position_ids)
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin)
if past_key_value is not None:
# sin and cos are specific to RoPE models; cache_position needed for the static cache
cache_kwargs = {"sin": sin, "cos": cos, "cache_position": cache_position}
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
# repeat k/v heads for top-k attention experts
key_states = key_states.repeat(1, self.top_k, 1, 1)
value_states = value_states.repeat(1, self.top_k, 1, 1)
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
if attention_mask is not None: # no matter the length, we just slice it
causal_mask = attention_mask[:, :, :, : key_states.shape[-2]]
attn_weights = attn_weights + causal_mask
# upcast attention to fp32
attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(query_states.dtype)
attn_weights = nn.functional.dropout(attn_weights, p=self.attention_dropout, training=self.training)
attn_output = torch.matmul(attn_weights, value_states)
if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.transpose(1, 2).contiguous()
attn_output = attn_output.reshape(bsz, q_len, self.top_k, self.kv_projection_size)
attn_output = self.experts.reduce(attn_output, topo_info)
attn_output = attn_output.view(bsz, q_len, -1)
if not output_attentions:
attn_weights = None
return attn_output, attn_weights, past_key_value, router_logits
|
class_definition
| 20,790 | 25,224 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,728 |
class JetMoeSdpaAttention(JetMoeAttention):
"""
JetMoe attention module using torch.nn.functional.scaled_dot_product_attention. This module inherits from
`JetMoeAttention` as the weights of the module stays untouched. The only changes are on the forward pass to adapt to
SDPA API.
"""
# Adapted from JetMoeAttention.forward
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Cache] = None,
output_attentions: bool = False,
use_cache: bool = False,
cache_position: Optional[torch.LongTensor] = None,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]], Optional[torch.Tensor]]:
if output_attentions:
# TODO: Improve this warning with e.g. `model.config.attn_implementation = "manual"` once this is implemented.
logger.warning_once(
"JetMoeModel is using JetMoeSdpaAttention, but `torch.nn.functional.scaled_dot_product_attention` does not support `output_attentions=True`. Falling back to the manual attention implementation, "
'but specifying the manual implementation will be required from Transformers version v5.0.0 onwards. This warning can be removed using the argument `attn_implementation="eager"` when loading the model.'
)
return super().forward(
hidden_states=hidden_states,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_value=past_key_value,
output_attentions=output_attentions,
use_cache=use_cache,
cache_position=cache_position,
)
bsz, q_len, _ = hidden_states.size()
query_states, router_logits, topo_info = self.experts.map(hidden_states)
key_states, value_states = self.kv_proj(hidden_states).chunk(2, dim=-1)
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
cos, sin = self.rotary_emb(value_states, position_ids)
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin)
if past_key_value is not None:
# sin and cos are specific to RoPE models; cache_position needed for the static cache
cache_kwargs = {"sin": sin, "cos": cos, "cache_position": cache_position}
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
# repeat k/v heads for top-k attention experts
key_states = key_states.repeat(1, self.top_k, 1, 1)
value_states = value_states.repeat(1, self.top_k, 1, 1)
causal_mask = attention_mask
if attention_mask is not None:
causal_mask = causal_mask[:, :, :, : key_states.shape[-2]]
# SDPA with memory-efficient backend is currently (torch==2.1.2) bugged with non-contiguous inputs with custom attn_mask,
# Reference: https://github.com/pytorch/pytorch/issues/112577.
if query_states.device.type == "cuda" and causal_mask is not None:
query_states = query_states.contiguous()
key_states = key_states.contiguous()
value_states = value_states.contiguous()
# We dispatch to SDPA's Flash Attention or Efficient kernels via this `is_causal` if statement instead of an inline conditional assignment
# in SDPA to support both torch.compile's dynamic shapes and full graph options. An inline conditional prevents dynamic shapes from compiling.
is_causal = True if causal_mask is None and q_len > 1 else False
attn_output = torch.nn.functional.scaled_dot_product_attention(
query_states,
key_states,
value_states,
attn_mask=causal_mask,
dropout_p=self.attention_dropout if self.training else 0.0,
is_causal=is_causal,
)
attn_output = attn_output.transpose(1, 2).contiguous()
attn_output = attn_output.reshape(bsz, q_len, self.top_k, self.kv_projection_size)
attn_output = self.experts.reduce(attn_output, topo_info)
attn_output = attn_output.view(bsz, q_len, -1)
return attn_output, None, past_key_value, router_logits
|
class_definition
| 25,227 | 29,840 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,729 |
class JetMoeFlashAttention2(JetMoeAttention):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# TODO: Should be removed once Flash Attention for RoCm is bumped to 2.1.
# flash_attn<2.1 generates top-left aligned causal mask, while what is needed here is bottom-right alignement, that was made default for flash_attn>=2.1. This attribute is used to handle this difference. Reference: https://github.com/Dao-AILab/flash-attention/releases/tag/v2.1.0.
# Beware that with flash_attn<2.1, using q_seqlen != k_seqlen (except for the case q_seqlen == 1) produces a wrong mask (top-left).
self._flash_attn_uses_top_left_mask = not is_flash_attn_greater_or_equal_2_10()
def forward(
self,
hidden_states: Optional[torch.FloatTensor],
attention_mask: Optional[torch.FloatTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Cache] = None,
use_cache: Optional[bool] = False,
output_attentions: Optional[bool] = False,
cache_position: Optional[torch.LongTensor] = None,
) -> Union[
Tuple[torch.Tensor, Tuple[torch.Tensor]],
Optional[Tuple[torch.Tensor, Tuple[torch.Tensor], Tuple[torch.Tensor, ...]]],
]:
"""
Forward pass of the JetMoeAttention module.
Args:
hidden_states (Optional[torch.FloatTensor]): Input hidden states.
attention_mask (Optional[torch.FloatTensor]): Attention mask.
layer_past (Optional[Tuple[torch.Tensor]]): Past layer state.
use_cache (Optional[bool]): Whether to use cached states.
output_attentions (Optional[bool]): Whether to output attention weights.
cache_position (Optional[torch.LongTensor]): Position of the cache.
Returns:
Union[Tuple[torch.Tensor, Tuple[torch.Tensor]], Optional[Tuple[...]]]: Tuple containing outputs.
"""
output_attentions = False
bsz, q_len, hidden_size = hidden_states.size()
# calculate query, key, values
query_states, router_logits, topo_info = self.experts.map(hidden_states)
key_states, value_states = self.kv_proj(hidden_states).chunk(2, dim=-1)
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
cos, sin = self.rotary_emb(value_states, position_ids)
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin)
if past_key_value is not None:
# sin and cos are specific to RoPE models; cache_position needed for the static cache
cache_kwargs = {"sin": sin, "cos": cos, "cache_position": cache_position}
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
# repeat k/v heads for top-k attention experts
key_states = key_states.repeat(1, self.top_k, 1, 1)
value_states = value_states.repeat(1, self.top_k, 1, 1)
# TODO: These transpose are quite inefficient but Flash Attention requires the layout [batch_size, sequence_length, num_heads, head_dim]. We would need to refactor the KV cache
# to be able to avoid many of these transpose/reshape/view.
query_states = query_states.transpose(1, 2)
key_states = key_states.transpose(1, 2)
value_states = value_states.transpose(1, 2)
dropout_rate = self.attention_dropout if self.training else 0.0
# In PEFT, usually we cast the layer norms in float32 for training stability reasons
# therefore the input hidden states gets silently casted in float32. Hence, we need
# cast them back in the correct dtype just to be sure everything works as expected.
# This might slowdown training & inference so it is recommended to not cast the LayerNorms
# in fp32. (LlamaRMSNorm handles it correctly)
input_dtype = query_states.dtype
if input_dtype == torch.float32:
if torch.is_autocast_enabled():
target_dtype = torch.get_autocast_gpu_dtype()
# Handle the case where the model is quantized
elif hasattr(self.config, "_pre_quantization_dtype"):
target_dtype = self.config._pre_quantization_dtype
else:
target_dtype = self.kv_proj.weight.dtype
logger.warning_once(
f"The input hidden states seems to be silently casted in float32, this might be related to"
f" the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in"
f" {target_dtype}."
)
query_states = query_states.to(target_dtype)
key_states = key_states.to(target_dtype)
value_states = value_states.to(target_dtype)
attn_output = _flash_attention_forward(
query_states,
key_states,
value_states,
attention_mask,
q_len,
dropout=dropout_rate,
use_top_left_mask=self._flash_attn_uses_top_left_mask,
is_causal=self.is_causal,
).to(input_dtype)
# output projection
attn_output = attn_output.reshape(bsz, q_len, self.top_k, self.kv_projection_size)
attn_output = self.experts.reduce(attn_output, topo_info)
attn_output = attn_output.view(bsz, q_len, hidden_size) # re-assemble all head outputs side by side
if not output_attentions:
attn_weights = None
return attn_output, attn_weights, past_key_value, router_logits
|
class_definition
| 29,843 | 35,715 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,730 |
class JetMoeBlock(nn.Module):
def __init__(self, config: JetMoeConfig, layer_idx: Optional[int] = None):
"""
Initialize the JetMoeBlock module.
Args:
config:
Configuration object with model hyperparameters.
"""
super().__init__()
self.input_layernorm = JetMoeRMSNorm(config.hidden_size)
self.self_attention = JETMOE_ATTENTION_CLASSES[config._attn_implementation](config, layer_idx)
self.post_attention_layernorm = JetMoeRMSNorm(config.hidden_size)
self.mlp = JetMoeMoE(config)
def forward(
self,
hidden_states: Optional[torch.FloatTensor],
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.FloatTensor] = None,
output_attentions: Optional[bool] = False,
output_router_logits: Optional[bool] = False,
use_cache: Optional[bool] = False,
cache_position: Optional[torch.LongTensor] = None,
) -> Union[Tuple[torch.Tensor], Optional[Tuple[torch.Tensor, Tuple[torch.FloatTensor, ...]]]]:
# Self Attention
attn_output, self_attn_weights, present_key_value, attn_router_logits = self.self_attention(
hidden_states=self.input_layernorm(hidden_states),
attention_mask=attention_mask,
position_ids=position_ids,
past_key_value=past_key_value,
output_attentions=output_attentions,
use_cache=use_cache,
cache_position=cache_position,
)
hidden_states = hidden_states + attn_output
x_mlp, mlp_router_logits = self.mlp(self.post_attention_layernorm(hidden_states))
hidden_states = hidden_states + x_mlp
outputs = (hidden_states,)
if output_attentions:
outputs += (self_attn_weights,)
if use_cache:
outputs += (present_key_value,)
if output_router_logits:
outputs += attn_router_logits, mlp_router_logits
return outputs
|
class_definition
| 35,862 | 37,948 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,731 |
class JetMoePreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = JetMoeConfig
base_model_prefix = "transformer"
supports_gradient_checkpointing = False
_no_split_modules = ["JetMoeBlock"]
_skip_keys_device_placement = ["past_key_values"]
_supports_flash_attn_2 = True
_supports_sdpa = True
_supports_cache_class = True
def _init_weights(self, module):
"""Initialize the weights."""
if isinstance(module, (nn.Linear,)):
# Slightly different from Mesh Transformer JAX which uses truncated_normal for initialization
# cf https://github.com/pytorch/pytorch/pull/5617
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
elif isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
elif isinstance(module, JetMoeParallelExperts):
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
elif isinstance(module, JetMoeMoA):
module.bias.data.zero_()
elif isinstance(module, JetMoeMoE):
module.bias.data.zero_()
|
class_definition
| 37,951 | 39,566 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,732 |
class JetMoeModel(JetMoePreTrainedModel):
"""
Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`JetMoeBlock`]
Args:
config:
JetMoeConfig
"""
def __init__(self, config: JetMoeConfig):
super().__init__(config)
self.padding_idx = config.pad_token_id
self.vocab_size = config.vocab_size
self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
self.layers = nn.ModuleList([JetMoeBlock(config, layer_idx) for layer_idx in range(config.num_hidden_layers)])
self._attn_implementation = config._attn_implementation
self.norm = JetMoeRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
self.gradient_checkpointing = False
# Initialize weights and apply final processing
self.post_init()
# Copied from transformers.models.llama.modeling_llama.LlamaModel.get_input_embeddings
def get_input_embeddings(self):
return self.embed_tokens
# Copied from transformers.models.llama.modeling_llama.LlamaModel.set_input_embeddings
def set_input_embeddings(self, value):
self.embed_tokens = value
@add_start_docstrings_to_model_forward(JETMOE_INPUTS_DOCSTRING)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
output_router_logits: Optional[bool] = None,
return_dict: Optional[bool] = None,
cache_position: Optional[torch.LongTensor] = None,
) -> Union[Tuple, MoeModelOutputWithPast]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
output_router_logits = (
output_router_logits if output_router_logits is not None else self.config.output_router_logits
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if (input_ids is None) ^ (inputs_embeds is not None):
raise ValueError("You must specify exactly one of input_ids or inputs_embeds")
if self.gradient_checkpointing and self.training and use_cache:
logger.warning_once(
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`."
)
use_cache = False
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
# kept for BC (non `Cache` `past_key_values` inputs)
return_legacy_cache = False
if use_cache and not isinstance(past_key_values, Cache):
return_legacy_cache = True
if past_key_values is None:
past_key_values = DynamicCache()
else:
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
logger.warning_once(
"We detected that you are passing `past_key_values` as a tuple of tuples. This is deprecated and "
"will be removed in v4.47. Please convert your cache or use an appropriate `Cache` class "
"(https://huggingface.co/docs/transformers/kv_cache#legacy-cache-format)"
)
if cache_position is None:
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
if attention_mask is not None and self._attn_implementation == "flash_attention_2" and use_cache:
batch_size = inputs_embeds.shape[0]
is_padding_right = attention_mask[:, -1].sum().item() != batch_size
if is_padding_right:
raise ValueError(
"You are attempting to perform batched generation with padding_side='right'"
" this may lead to unexpected behaviour for Flash Attention version of JetMoe. Make sure to "
" call `tokenizer.padding_side = 'left'` before tokenizing the input. "
)
causal_mask = self._update_causal_mask(
attention_mask, inputs_embeds, cache_position, past_key_values, output_attentions
)
hidden_states = inputs_embeds
# decoder layers
all_hidden_states = () if output_hidden_states else None
all_self_attns = () if output_attentions else None
all_router_logits = () if output_router_logits else None
next_decoder_cache = None
for decoder_layer in self.layers:
if output_hidden_states:
all_hidden_states += (hidden_states,)
if self.gradient_checkpointing and self.training:
layer_outputs = self._gradient_checkpointing_func(
decoder_layer.__call__,
hidden_states,
position_ids,
past_key_values,
causal_mask,
output_attentions,
output_router_logits,
use_cache,
use_reentrant=False,
)
else:
layer_outputs = decoder_layer(
hidden_states,
attention_mask=causal_mask,
position_ids=position_ids,
past_key_value=past_key_values,
output_attentions=output_attentions,
output_router_logits=output_router_logits,
use_cache=use_cache,
)
hidden_states = layer_outputs[0]
if use_cache:
next_decoder_cache = layer_outputs[2 if output_attentions else 1]
if output_attentions:
all_self_attns += (layer_outputs[1],)
if output_router_logits:
all_router_logits += (layer_outputs[-2], layer_outputs[-1])
hidden_states = self.norm(hidden_states)
# add hidden states from the last decoder layer
if output_hidden_states:
all_hidden_states += (hidden_states,)
next_cache = next_decoder_cache if use_cache else None
if return_legacy_cache:
next_cache = next_cache.to_legacy_cache()
if not return_dict:
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
return MoeModelOutputWithPast(
last_hidden_state=hidden_states,
past_key_values=next_cache,
hidden_states=all_hidden_states,
attentions=all_self_attns,
router_logits=all_router_logits,
)
# Copied from transformers.models.llama.modeling_llama.LlamaModel._update_causal_mask
def _update_causal_mask(
self,
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_key_values: Cache,
output_attentions: bool,
):
if self.config._attn_implementation == "flash_attention_2":
if attention_mask is not None and (attention_mask == 0.0).any():
return attention_mask
return None
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
# When output attentions is True, sdpa implementation's forward method calls the eager implementation's forward
if self.config._attn_implementation == "sdpa" and not using_static_cache and not output_attentions:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask,
inputs_embeds=input_tensor,
past_key_values_length=past_seen_tokens,
is_training=self.training,
):
return None
dtype, device = input_tensor.dtype, input_tensor.device
sequence_length = input_tensor.shape[1]
if using_static_cache:
target_length = past_key_values.get_max_cache_shape()
else:
target_length = (
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
else past_seen_tokens + sequence_length + 1
)
# In case the provided `attention` mask is 2D, we generate a causal mask here (4D).
causal_mask = self._prepare_4d_causal_attention_mask_with_cache_position(
attention_mask,
sequence_length=sequence_length,
target_length=target_length,
dtype=dtype,
device=device,
cache_position=cache_position,
batch_size=input_tensor.shape[0],
)
if (
self.config._attn_implementation == "sdpa"
and attention_mask is not None
and attention_mask.device.type == "cuda"
and not output_attentions
):
# Attend to all tokens in fully masked rows in the causal_mask, for example the relevant first rows when
# using left padding. This is required by F.scaled_dot_product_attention memory-efficient attention path.
# Details: https://github.com/pytorch/pytorch/issues/110213
min_dtype = torch.finfo(dtype).min
causal_mask = AttentionMaskConverter._unmask_unattended(causal_mask, min_dtype)
return causal_mask
@staticmethod
# Copied from transformers.models.llama.modeling_llama.LlamaModel._prepare_4d_causal_attention_mask_with_cache_position
def _prepare_4d_causal_attention_mask_with_cache_position(
attention_mask: torch.Tensor,
sequence_length: int,
target_length: int,
dtype: torch.dtype,
device: torch.device,
cache_position: torch.Tensor,
batch_size: int,
**kwargs,
):
"""
Creates a causal 4D mask of shape `(batch_size, 1, query_length, key_value_length)` from a 2D mask of shape
`(batch_size, key_value_length)`, or if the input `attention_mask` is already 4D, do nothing.
Args:
attention_mask (`torch.Tensor`):
A 2D attention mask of shape `(batch_size, key_value_length)` or a 4D attention mask of shape
`(batch_size, 1, query_length, key_value_length)`.
sequence_length (`int`):
The sequence length being processed.
target_length (`int`):
The target length: when generating with static cache, the mask should be as long as the static cache,
to account for the 0 padding, the part of the cache that is not filled yet.
dtype (`torch.dtype`):
The dtype to use for the 4D attention mask.
device (`torch.device`):
The device to plcae the 4D attention mask on.
cache_position (`torch.Tensor`):
Indices depicting the position of the input sequence tokens in the sequence.
batch_size (`torch.Tensor`):
Batch size.
"""
if attention_mask is not None and attention_mask.dim() == 4:
# In this case we assume that the mask comes already in inverted form and requires no inversion or slicing.
causal_mask = attention_mask
else:
min_dtype = torch.finfo(dtype).min
causal_mask = torch.full(
(sequence_length, target_length), fill_value=min_dtype, dtype=dtype, device=device
)
if sequence_length != 1:
causal_mask = torch.triu(causal_mask, diagonal=1)
causal_mask *= torch.arange(target_length, device=device) > cache_position.reshape(-1, 1)
causal_mask = causal_mask[None, None, :, :].expand(batch_size, 1, -1, -1)
if attention_mask is not None:
causal_mask = causal_mask.clone() # copy to contiguous memory for in-place edit
mask_length = attention_mask.shape[-1]
padding_mask = causal_mask[:, :, :, :mask_length] + attention_mask[:, None, None, :]
padding_mask = padding_mask == 0
causal_mask[:, :, :, :mask_length] = causal_mask[:, :, :, :mask_length].masked_fill(
padding_mask, min_dtype
)
return causal_mask
|
class_definition
| 42,858 | 56,238 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,733 |
class JetMoeForCausalLM(JetMoePreTrainedModel, GenerationMixin):
_tied_weights_keys = ["lm_head.weight"]
def __init__(self, config):
super().__init__(config)
self.model = JetMoeModel(config)
self.vocab_size = config.vocab_size
self.aux_loss_coef = config.aux_loss_coef
self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
self.tie_word_embeddings = config.tie_word_embeddings
# Initialize weights and apply final processing
self.post_init()
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_input_embeddings
def get_input_embeddings(self):
return self.model.embed_tokens
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_input_embeddings
def set_input_embeddings(self, value):
self.model.embed_tokens = value
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_output_embeddings
def get_output_embeddings(self):
return self.lm_head
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_output_embeddings
def set_output_embeddings(self, new_embeddings):
self.lm_head = new_embeddings
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_decoder
def set_decoder(self, decoder):
self.model = decoder
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_decoder
def get_decoder(self):
return self.model
@add_start_docstrings_to_model_forward(JETMOE_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=MoeCausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
output_router_logits: Optional[bool] = None,
return_dict: Optional[bool] = None,
cache_position: Optional[torch.LongTensor] = None,
num_logits_to_keep: int = 0,
) -> Union[Tuple, MoeCausalLMOutputWithPast]:
r"""
Args:
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
(masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
num_logits_to_keep (`int`, *optional*):
Calculate logits for the last `num_logits_to_keep` tokens. If `0`, calculate logits for all
`input_ids` (special case). Only last token logits are needed for generation, and calculating them only for that
token can save memory, which becomes pretty significant for long sequences or large vocabulary size.
Returns:
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
# decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
outputs = self.model(
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
cache_position=cache_position,
)
hidden_states = outputs[0]
# Only compute necessary logits, and do not upcast them to float if we are not computing the loss
logits = self.lm_head(hidden_states[:, -num_logits_to_keep:, :])
loss = None
if labels is not None:
# Upcast to float if we need to compute the loss to avoid potential precision issues
logits = logits.float()
# Shift so that tokens < n predict n
shift_logits = logits[..., :-1, :].contiguous()
shift_labels = labels[..., 1:].contiguous()
# Flatten the tokens
shift_logits = shift_logits.view(-1, self.config.vocab_size)
shift_labels = shift_labels.view(-1)
# Ensure tensors are on the same device
shift_labels = shift_labels.to(shift_logits.device)
loss_fct = CrossEntropyLoss()
loss = loss_fct(shift_logits, shift_labels)
aux_loss = None
if output_router_logits:
aux_loss = load_balancing_loss_func(
outputs.router_logits if return_dict else outputs[-1],
self.num_experts,
self.num_experts_per_tok,
attention_mask,
)
if labels is not None:
loss += self.aux_loss_coef * aux_loss.to(loss.device) # make sure to reside in the same device
if not return_dict:
output = (logits,) + outputs[1:]
if output_router_logits:
output = (aux_loss,) + output
return (loss,) + output if loss is not None else output
return MoeCausalLMOutputWithPast(
loss=loss,
aux_loss=aux_loss,
logits=logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
router_logits=outputs.router_logits,
)
|
class_definition
| 56,241 | 62,443 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,734 |
class JetMoeForSequenceClassification(JetMoePreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.num_labels = config.num_labels
self.model = JetMoeModel(config)
self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.model.embed_tokens
def set_input_embeddings(self, value):
self.model.embed_tokens = value
@add_start_docstrings_to_model_forward(JETMOE_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, SequenceClassifierOutputWithPast]:
r"""
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
transformer_outputs = self.model(
input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = transformer_outputs[0]
logits = self.score(hidden_states)
if input_ids is not None:
batch_size = input_ids.shape[0]
else:
batch_size = inputs_embeds.shape[0]
if self.config.pad_token_id is None and batch_size != 1:
raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
if self.config.pad_token_id is None:
sequence_lengths = -1
else:
if input_ids is not None:
# if no pad token found, use modulo instead of reverse indexing for ONNX compatibility
sequence_lengths = torch.eq(input_ids, self.config.pad_token_id).int().argmax(-1) - 1
sequence_lengths = sequence_lengths % input_ids.shape[-1]
sequence_lengths = sequence_lengths.to(logits.device)
else:
sequence_lengths = -1
pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
loss = None
if labels is not None:
loss = self.loss_function(logits=logits, labels=labels, pooled_logits=pooled_logits, config=self.config)
if not return_dict:
output = (pooled_logits,) + transformer_outputs[1:]
return ((loss,) + output) if loss is not None else output
return SequenceClassifierOutputWithPast(
loss=loss,
logits=pooled_logits,
past_key_values=transformer_outputs.past_key_values,
hidden_states=transformer_outputs.hidden_states,
attentions=transformer_outputs.attentions,
)
|
class_definition
| 63,359 | 67,175 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/modeling_jetmoe.py
| null | 4,735 |
class JetMoeConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`JetMoeModel`]. It is used to instantiate a
JetMoe model according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a configuration of the JetMoe-4B.
[jetmoe/jetmoe-8b](https://huggingface.co/jetmoe/jetmoe-8b)
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 32000):
Vocabulary size of the JetMoe model. Defines the number of different tokens that can be represented by the
`inputs_ids` passed when calling [`JetMoeModel`]
hidden_size (`int`, *optional*, defaults to 2048):
Dimension of the hidden representations.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_key_value_heads (`int`, *optional*, defaults to 16):
Number of attention heads for each key and value in the Transformer encoder.
kv_channels (`int`, *optional*, defaults to 128):
Defines the number of channels for the key and value tensors.
intermediate_size (`int`, *optional*, defaults to 5632):
Dimension of the MLP representations.
max_position_embeddings (`int`, *optional*, defaults to 4096):
The maximum sequence length that this model might ever be used with. JetMoe's attention allows sequence of
up to 4096 tokens.
activation_function (`string`, *optional*, defaults to `"silu"`):
Defines the activation function for MLP experts.
num_local_experts (`int`, *optional*, defaults to 8):
Defines the number of experts in the MoE and MoA.
num_experts_per_tok (`int, *optional*, defaults to 2):
The number of experts to route per-token and for MoE and MoA.
output_router_logits (`bool`, *optional*, defaults to `False`):
Whether or not the router logits should be returned by the model. Enabeling this will also
allow the model to output the auxiliary loss.
aux_loss_coef (`float`, *optional*, defaults to 0.01):
The coefficient for the auxiliary loss.
use_cache (`bool`, *optional*, defaults to `True`):
Whether or not the model should return the last key/values attentions (not used by all models). Only
relevant if `config.is_decoder=True`.
bos_token_id (`int`, *optional*, defaults to 1):
The id of the "beginning-of-sequence" token.
eos_token_id (`int`, *optional*, defaults to 2):
The id of the "end-of-sequence" token.
tie_word_embeddings (`bool`, *optional*, defaults to `True`):
Whether the model's input and output word embeddings should be tied.
rope_theta (`float`, *optional*, defaults to 10000.0):
The base period of the RoPE embeddings.
rms_norm_eps (`float`, *optional*, defaults to 1e-06):
The epsilon used by the rms normalization layers.
initializer_range (`float`, *optional*, defaults to 0.01):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
```python
>>> from transformers import JetMoeModel, JetMoeConfig
>>> # Initializing a JetMoe 4B style configuration
>>> configuration = JetMoeConfig()
>>> # Initializing a model from the JetMoe 4B style configuration
>>> model = JetMoeModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "jetmoe"
keys_to_ignore_at_inference = ["past_key_values"]
def __init__(
self,
vocab_size=32000,
hidden_size=2048,
num_hidden_layers=12,
num_key_value_heads=16,
kv_channels=128,
intermediate_size=5632,
max_position_embeddings=4096,
activation_function="silu",
num_local_experts=8,
num_experts_per_tok=2,
output_router_logits=False,
aux_loss_coef=0.01,
use_cache=True,
bos_token_id=1,
eos_token_id=2,
tie_word_embeddings=True,
rope_theta=10000.0,
rms_norm_eps=1e-6,
initializer_range=0.01,
attention_dropout=0.0,
**kwargs,
):
if num_experts_per_tok > num_local_experts:
raise ValueError("`num_experts_per_tok` must be less than or equal to `num_local_experts`")
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_key_value_heads * num_experts_per_tok
self.num_key_value_heads = num_key_value_heads
self.kv_channels = kv_channels
self.intermediate_size = intermediate_size
self.max_position_embeddings = max_position_embeddings
self.activation_function = activation_function
self.num_local_experts = num_local_experts
self.num_experts_per_tok = num_experts_per_tok
self.output_router_logits = output_router_logits
self.aux_loss_coef = aux_loss_coef
self.use_cache = use_cache
self.initializer_range = initializer_range
self.attention_dropout = attention_dropout
self.bos_token_id = bos_token_id
self.eos_token_id = eos_token_id
self.rope_theta = rope_theta
self.rms_norm_eps = rms_norm_eps
super().__init__(
bos_token_id=bos_token_id, eos_token_id=eos_token_id, tie_word_embeddings=tie_word_embeddings, **kwargs
)
|
class_definition
| 797 | 6,774 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/jetmoe/configuration_jetmoe.py
| null | 4,736 |
class LxmertConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`LxmertModel`] or a [`TFLxmertModel`]. It is used
to instantiate a LXMERT model according to the specified arguments, defining the model architecture. Instantiating
a configuration with the defaults will yield a similar configuration to that of the Lxmert
[unc-nlp/lxmert-base-uncased](https://huggingface.co/unc-nlp/lxmert-base-uncased) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 30522):
Vocabulary size of the LXMERT model. Defines the number of different tokens that can be represented by the
`inputs_ids` passed when calling [`LxmertModel`] or [`TFLxmertModel`].
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
num_attention_heads (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
num_qa_labels (`int`, *optional*, defaults to 9500):
This represents the total number of different question answering (QA) labels there are. If using more than
one dataset with QA, the user will need to account for the total number of labels that all of the datasets
have in total.
num_object_labels (`int`, *optional*, defaults to 1600):
This represents the total number of semantically unique objects that lxmert will be able to classify a
pooled-object feature as belonging too.
num_attr_labels (`int`, *optional*, defaults to 400):
This represents the total number of semantically unique attributes that lxmert will be able to classify a
pooled-object feature as possessing.
intermediate_size (`int`, *optional*, defaults to 3072):
Dimensionality of the "intermediate" (often named feed-forward) layer in the Transformer encoder.
hidden_act (`str` or `Callable`, *optional*, defaults to `"gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
The dropout ratio for the attention probabilities.
max_position_embeddings (`int`, *optional*, defaults to 512):
The maximum sequence length that this model might ever be used with. Typically set this to something large
just in case (e.g., 512 or 1024 or 2048).
type_vocab_size (`int`, *optional*, defaults to 2):
The vocabulary size of the *token_type_ids* passed into [`BertModel`].
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
layer_norm_eps (`float`, *optional*, defaults to 1e-12):
The epsilon used by the layer normalization layers.
l_layers (`int`, *optional*, defaults to 9):
Number of hidden layers in the Transformer language encoder.
x_layers (`int`, *optional*, defaults to 5):
Number of hidden layers in the Transformer cross modality encoder.
r_layers (`int`, *optional*, defaults to 5):
Number of hidden layers in the Transformer visual encoder.
visual_feat_dim (`int`, *optional*, defaults to 2048):
This represents the last dimension of the pooled-object features used as input for the model, representing
the size of each object feature itself.
visual_pos_dim (`int`, *optional*, defaults to 4):
This represents the number of spacial features that are mixed into the visual features. The default is set
to 4 because most commonly this will represent the location of a bounding box. i.e., (x, y, width, height)
visual_loss_normalizer (`float`, *optional*, defaults to 6.67):
This represents the scaling factor in which each visual loss is multiplied by if during pretraining, one
decided to train with multiple vision-based loss objectives.
task_matched (`bool`, *optional*, defaults to `True`):
This task is used for sentence-image matching. If the sentence correctly describes the image the label will
be 1. If the sentence does not correctly describe the image, the label will be 0.
task_mask_lm (`bool`, *optional*, defaults to `True`):
Whether or not to add masked language modeling (as used in pretraining models such as BERT) to the loss
objective.
task_obj_predict (`bool`, *optional*, defaults to `True`):
Whether or not to add object prediction, attribute prediction and feature regression to the loss objective.
task_qa (`bool`, *optional*, defaults to `True`):
Whether or not to add the question-answering loss to the objective
visual_obj_loss (`bool`, *optional*, defaults to `True`):
Whether or not to calculate the object-prediction loss objective
visual_attr_loss (`bool`, *optional*, defaults to `True`):
Whether or not to calculate the attribute-prediction loss objective
visual_feat_loss (`bool`, *optional*, defaults to `True`):
Whether or not to calculate the feature-regression loss objective
"""
model_type = "lxmert"
attribute_map = {}
def __init__(
self,
vocab_size=30522,
hidden_size=768,
num_attention_heads=12,
num_qa_labels=9500,
num_object_labels=1600,
num_attr_labels=400,
intermediate_size=3072,
hidden_act="gelu",
hidden_dropout_prob=0.1,
attention_probs_dropout_prob=0.1,
max_position_embeddings=512,
type_vocab_size=2,
initializer_range=0.02,
layer_norm_eps=1e-12,
l_layers=9,
x_layers=5,
r_layers=5,
visual_feat_dim=2048,
visual_pos_dim=4,
visual_loss_normalizer=6.67,
task_matched=True,
task_mask_lm=True,
task_obj_predict=True,
task_qa=True,
visual_obj_loss=True,
visual_attr_loss=True,
visual_feat_loss=True,
**kwargs,
):
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.num_attention_heads = num_attention_heads
self.hidden_act = hidden_act
self.intermediate_size = intermediate_size
self.hidden_dropout_prob = hidden_dropout_prob
self.attention_probs_dropout_prob = attention_probs_dropout_prob
self.max_position_embeddings = max_position_embeddings
self.type_vocab_size = type_vocab_size
self.initializer_range = initializer_range
self.layer_norm_eps = layer_norm_eps
self.num_qa_labels = num_qa_labels
self.num_object_labels = num_object_labels
self.num_attr_labels = num_attr_labels
self.l_layers = l_layers
self.x_layers = x_layers
self.r_layers = r_layers
self.visual_feat_dim = visual_feat_dim
self.visual_pos_dim = visual_pos_dim
self.visual_loss_normalizer = visual_loss_normalizer
self.task_matched = task_matched
self.task_mask_lm = task_mask_lm
self.task_obj_predict = task_obj_predict
self.task_qa = task_qa
self.visual_obj_loss = visual_obj_loss
self.visual_attr_loss = visual_attr_loss
self.visual_feat_loss = visual_feat_loss
self.num_hidden_layers = {"vision": r_layers, "cross_encoder": x_layers, "language": l_layers}
super().__init__(**kwargs)
|
class_definition
| 758 | 8,904 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/configuration_lxmert.py
| null | 4,737 |
class GeLU(nn.Module):
def __init__(self):
super().__init__()
def forward(self, x):
return gelu(x)
|
class_definition
| 1,311 | 1,434 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,738 |
class LxmertModelOutput(ModelOutput):
"""
Lxmert's outputs that contain the last hidden states, pooled outputs, and attention probabilities for the language,
visual, and, cross-modality encoders. (note: the visual encoder in Lxmert is referred to as the "relation-ship"
encoder")
Args:
language_output (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the language encoder.
vision_output (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the visual encoder.
pooled_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification, CLS, token) further processed
by a Linear layer and a Tanh activation function. The Linear
language_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
vision_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
language_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
vision_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
cross_encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
language_output: Optional[torch.FloatTensor] = None
vision_output: Optional[torch.FloatTensor] = None
pooled_output: Optional[torch.FloatTensor] = None
language_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
vision_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
language_attentions: Optional[Tuple[torch.FloatTensor]] = None
vision_attentions: Optional[Tuple[torch.FloatTensor]] = None
cross_encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None
|
class_definition
| 1,448 | 4,926 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,739 |
class LxmertForQuestionAnsweringOutput(ModelOutput):
"""
Output type of [`LxmertForQuestionAnswering`].
Args:
loss (*optional*, returned when `labels` is provided, `torch.FloatTensor` of shape `(1,)`):
Total loss as the sum of the masked language modeling loss and the next sequence prediction
(classification) loss.k.
question_answering_score (`torch.FloatTensor` of shape `(batch_size, n_qa_answers)`, *optional*):
Prediction scores of question answering objective (classification).
language_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
vision_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
language_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
vision_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
cross_encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
question_answering_score: Optional[torch.FloatTensor] = None
language_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
vision_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
language_attentions: Optional[Tuple[torch.FloatTensor]] = None
vision_attentions: Optional[Tuple[torch.FloatTensor]] = None
cross_encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None
|
class_definition
| 4,940 | 7,945 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,740 |
class LxmertForPreTrainingOutput(ModelOutput):
"""
Output type of [`LxmertForPreTraining`].
Args:
loss (*optional*, returned when `labels` is provided, `torch.FloatTensor` of shape `(1,)`):
Total loss as the sum of the masked language modeling loss and the next sequence prediction
(classification) loss.
prediction_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
cross_relationship_score (`torch.FloatTensor` of shape `(batch_size, 2)`):
Prediction scores of the textual matching objective (classification) head (scores of True/False
continuation before SoftMax).
question_answering_score (`torch.FloatTensor` of shape `(batch_size, n_qa_answers)`):
Prediction scores of question answering objective (classification).
language_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
vision_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for input features + one for the output of each cross-modality layer) of
shape `(batch_size, sequence_length, hidden_size)`.
language_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
vision_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
cross_encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
prediction_logits: Optional[torch.FloatTensor] = None
cross_relationship_score: Optional[torch.FloatTensor] = None
question_answering_score: Optional[torch.FloatTensor] = None
language_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
vision_hidden_states: Optional[Tuple[torch.FloatTensor]] = None
language_attentions: Optional[Tuple[torch.FloatTensor]] = None
vision_attentions: Optional[Tuple[torch.FloatTensor]] = None
cross_encoder_attentions: Optional[Tuple[torch.FloatTensor]] = None
|
class_definition
| 7,959 | 11,515 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,741 |
class LxmertEmbeddings(nn.Module):
"""Construct the embeddings from word, position and token_type embeddings."""
def __init__(self, config):
super().__init__()
self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=0)
self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size, padding_idx=0)
self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size, padding_idx=0)
# self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load
# any TensorFlow checkpoint file
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=1e-12)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, input_ids, token_type_ids=None, inputs_embeds=None):
if input_ids is not None:
input_shape = input_ids.size()
device = input_ids.device
else:
input_shape = inputs_embeds.size()[:-1]
device = inputs_embeds.device
seq_length = input_shape[1]
position_ids = torch.arange(seq_length, dtype=torch.long, device=device)
position_ids = position_ids.unsqueeze(0).expand(input_shape)
if token_type_ids is None:
token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device)
if inputs_embeds is None:
inputs_embeds = self.word_embeddings(input_ids)
position_embeddings = self.position_embeddings(position_ids)
token_type_embeddings = self.token_type_embeddings(token_type_ids)
embeddings = inputs_embeds + position_embeddings + token_type_embeddings
embeddings = self.LayerNorm(embeddings)
embeddings = self.dropout(embeddings)
return embeddings
|
class_definition
| 14,482 | 16,330 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,742 |
class LxmertAttention(nn.Module):
def __init__(self, config, ctx_dim=None):
super().__init__()
if config.hidden_size % config.num_attention_heads != 0:
raise ValueError(
f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention "
f"heads ({config.num_attention_heads})"
)
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
self.head_size = self.num_attention_heads * self.attention_head_size
# visual_dim = 2048
if ctx_dim is None:
ctx_dim = config.hidden_size
self.query = nn.Linear(config.hidden_size, self.head_size)
self.key = nn.Linear(ctx_dim, self.head_size)
self.value = nn.Linear(ctx_dim, self.head_size)
self.dropout = nn.Dropout(config.attention_probs_dropout_prob)
def transpose_for_scores(self, x):
new_x_shape = x.size()[:-1] + (
self.num_attention_heads,
self.attention_head_size,
)
x = x.view(new_x_shape)
return x.permute(0, 2, 1, 3)
def forward(self, hidden_states, context, attention_mask=None, output_attentions=False):
mixed_query_layer = self.query(hidden_states)
mixed_key_layer = self.key(context)
mixed_value_layer = self.value(context)
query_layer = self.transpose_for_scores(mixed_query_layer)
key_layer = self.transpose_for_scores(mixed_key_layer)
value_layer = self.transpose_for_scores(mixed_value_layer)
# Take the dot product between "query" and "key" to get the raw attention scores.
attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2))
attention_scores = attention_scores / math.sqrt(self.attention_head_size)
# Apply the attention mask is (precomputed for all layers in BertModel forward() function)
if attention_mask is not None:
attention_scores = attention_scores + attention_mask
# Normalize the attention scores to probabilities.
attention_probs = nn.functional.softmax(attention_scores, dim=-1)
# This is actually dropping out entire tokens to attend to, which might
# seem a bit unusual, but is taken from the original Transformer paper.
attention_probs = self.dropout(attention_probs)
context_layer = torch.matmul(attention_probs, value_layer)
context_layer = context_layer.permute(0, 2, 1, 3).contiguous()
new_context_layer_shape = context_layer.size()[:-2] + (self.head_size,)
context_layer = context_layer.view(new_context_layer_shape)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
return outputs
|
class_definition
| 16,333 | 19,169 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,743 |
class LxmertAttentionOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=1e-12)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states, input_tensor):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
|
class_definition
| 19,172 | 19,725 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,744 |
class LxmertCrossAttentionLayer(nn.Module):
def __init__(self, config):
super().__init__()
self.att = LxmertAttention(config)
self.output = LxmertAttentionOutput(config)
def forward(self, input_tensor, ctx_tensor, ctx_att_mask=None, output_attentions=False):
output = self.att(input_tensor, ctx_tensor, ctx_att_mask, output_attentions=output_attentions)
if output_attentions:
attention_probs = output[1]
attention_output = self.output(output[0], input_tensor)
outputs = (attention_output, attention_probs) if output_attentions else (attention_output,)
return outputs
|
class_definition
| 19,728 | 20,379 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,745 |
class LxmertSelfAttentionLayer(nn.Module):
def __init__(self, config):
super().__init__()
self.self = LxmertAttention(config)
self.output = LxmertAttentionOutput(config)
def forward(self, input_tensor, attention_mask, output_attentions=False):
# Self attention attends to itself, thus keys and queries are the same (input_tensor).
output = self.self(
input_tensor,
input_tensor,
attention_mask,
output_attentions=output_attentions,
)
if output_attentions:
attention_probs = output[1]
attention_output = self.output(output[0], input_tensor)
outputs = (attention_output, attention_probs) if output_attentions else (attention_output,)
return outputs
|
class_definition
| 20,382 | 21,177 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,746 |
class LxmertIntermediate(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.intermediate_size)
self.intermediate_act_fn = ACT2FN[config.hidden_act]
def forward(self, hidden_states):
hidden_states = self.dense(hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
|
class_definition
| 21,180 | 21,595 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,747 |
class LxmertOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.intermediate_size, config.hidden_size)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=1e-12)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states, input_tensor):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
|
class_definition
| 21,598 | 22,148 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,748 |
class LxmertLayer(nn.Module):
def __init__(self, config):
super().__init__()
self.attention = LxmertSelfAttentionLayer(config)
self.intermediate = LxmertIntermediate(config)
self.output = LxmertOutput(config)
def forward(self, hidden_states, attention_mask=None, output_attentions=False):
outputs = self.attention(hidden_states, attention_mask, output_attentions=output_attentions)
attention_output = outputs[0]
intermediate_output = self.intermediate(attention_output)
layer_output = self.output(intermediate_output, attention_output)
outputs = (layer_output,) + outputs[1:] # add attentions if we output them
return outputs
|
class_definition
| 22,151 | 22,866 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,749 |
class LxmertXLayer(nn.Module):
def __init__(self, config):
super().__init__()
# The cross-attention Layer
self.visual_attention = LxmertCrossAttentionLayer(config)
# Self-attention Layers
self.lang_self_att = LxmertSelfAttentionLayer(config)
self.visn_self_att = LxmertSelfAttentionLayer(config)
# Intermediate and Output Layers (FFNs)
self.lang_inter = LxmertIntermediate(config)
self.lang_output = LxmertOutput(config)
self.visn_inter = LxmertIntermediate(config)
self.visn_output = LxmertOutput(config)
def cross_att(
self,
lang_input,
lang_attention_mask,
visual_input,
visual_attention_mask,
output_x_attentions=False,
):
# Cross Attention
lang_att_output = self.visual_attention(
lang_input,
visual_input,
ctx_att_mask=visual_attention_mask,
output_attentions=output_x_attentions,
)
visual_att_output = self.visual_attention(
visual_input,
lang_input,
ctx_att_mask=lang_attention_mask,
output_attentions=False,
)
return lang_att_output, visual_att_output
def self_att(self, lang_input, lang_attention_mask, visual_input, visual_attention_mask):
# Self Attention
lang_att_output = self.lang_self_att(lang_input, lang_attention_mask, output_attentions=False)
visual_att_output = self.visn_self_att(visual_input, visual_attention_mask, output_attentions=False)
return lang_att_output[0], visual_att_output[0]
def output_fc(self, lang_input, visual_input):
# FC layers
lang_inter_output = self.lang_inter(lang_input)
visual_inter_output = self.visn_inter(visual_input)
# Layer output
lang_output = self.lang_output(lang_inter_output, lang_input)
visual_output = self.visn_output(visual_inter_output, visual_input)
return lang_output, visual_output
def forward(
self,
lang_feats,
lang_attention_mask,
visual_feats,
visual_attention_mask,
output_attentions=False,
):
lang_att_output, visual_att_output = self.cross_att(
lang_input=lang_feats,
lang_attention_mask=lang_attention_mask,
visual_input=visual_feats,
visual_attention_mask=visual_attention_mask,
output_x_attentions=output_attentions,
)
attention_probs = lang_att_output[1:]
lang_att_output, visual_att_output = self.self_att(
lang_att_output[0],
lang_attention_mask,
visual_att_output[0],
visual_attention_mask,
)
lang_output, visual_output = self.output_fc(lang_att_output, visual_att_output)
return (
(
lang_output,
visual_output,
attention_probs[0],
)
if output_attentions
else (lang_output, visual_output)
)
|
class_definition
| 22,869 | 25,962 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,750 |
class LxmertVisualFeatureEncoder(nn.Module):
def __init__(self, config):
super().__init__()
feat_dim = config.visual_feat_dim
pos_dim = config.visual_pos_dim
# Object feature encoding
self.visn_fc = nn.Linear(feat_dim, config.hidden_size)
self.visn_layer_norm = nn.LayerNorm(config.hidden_size, eps=1e-12)
# Box position encoding
self.box_fc = nn.Linear(pos_dim, config.hidden_size)
self.box_layer_norm = nn.LayerNorm(config.hidden_size, eps=1e-12)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, visual_feats, visual_pos):
x = self.visn_fc(visual_feats)
x = self.visn_layer_norm(x)
y = self.box_fc(visual_pos)
y = self.box_layer_norm(y)
output = (x + y) / 2
output = self.dropout(output)
return output
|
class_definition
| 25,965 | 26,840 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,751 |
class LxmertEncoder(nn.Module):
def __init__(self, config):
super().__init__()
# Obj-level image embedding layer
self.visn_fc = LxmertVisualFeatureEncoder(config)
self.config = config
# Number of layers
self.num_l_layers = config.l_layers
self.num_x_layers = config.x_layers
self.num_r_layers = config.r_layers
# Layers
# Using self.layer instead of self.l_layer to support loading BERT weights.
self.layer = nn.ModuleList([LxmertLayer(config) for _ in range(self.num_l_layers)])
self.x_layers = nn.ModuleList([LxmertXLayer(config) for _ in range(self.num_x_layers)])
self.r_layers = nn.ModuleList([LxmertLayer(config) for _ in range(self.num_r_layers)])
def forward(
self,
lang_feats,
lang_attention_mask,
visual_feats,
visual_pos,
visual_attention_mask=None,
output_attentions=None,
):
vision_hidden_states = ()
language_hidden_states = ()
vision_attentions = () if output_attentions or self.config.output_attentions else None
language_attentions = () if output_attentions or self.config.output_attentions else None
cross_encoder_attentions = () if output_attentions or self.config.output_attentions else None
visual_feats = self.visn_fc(visual_feats, visual_pos)
# Run language layers
for layer_module in self.layer:
l_outputs = layer_module(lang_feats, lang_attention_mask, output_attentions=output_attentions)
lang_feats = l_outputs[0]
language_hidden_states = language_hidden_states + (lang_feats,)
if language_attentions is not None:
language_attentions = language_attentions + (l_outputs[1],)
# Run relational layers
for layer_module in self.r_layers:
v_outputs = layer_module(visual_feats, visual_attention_mask, output_attentions=output_attentions)
visual_feats = v_outputs[0]
vision_hidden_states = vision_hidden_states + (visual_feats,)
if vision_attentions is not None:
vision_attentions = vision_attentions + (v_outputs[1],)
# Run cross-modality layers
for layer_module in self.x_layers:
x_outputs = layer_module(
lang_feats,
lang_attention_mask,
visual_feats,
visual_attention_mask,
output_attentions=output_attentions,
)
lang_feats, visual_feats = x_outputs[:2]
vision_hidden_states = vision_hidden_states + (visual_feats,)
language_hidden_states = language_hidden_states + (lang_feats,)
if cross_encoder_attentions is not None:
cross_encoder_attentions = cross_encoder_attentions + (x_outputs[2],)
visual_encoder_outputs = (
vision_hidden_states,
vision_attentions if output_attentions else None,
)
lang_encoder_outputs = (
language_hidden_states,
language_attentions if output_attentions else None,
)
return (
visual_encoder_outputs,
lang_encoder_outputs,
cross_encoder_attentions if output_attentions else None,
)
|
class_definition
| 26,843 | 30,179 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,752 |
class LxmertPooler(nn.Module):
def __init__(self, config):
super(LxmertPooler, self).__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
self.activation = nn.Tanh()
def forward(self, hidden_states):
# We "pool" the model by simply taking the hidden state corresponding
# to the first token.
first_token_tensor = hidden_states[:, 0]
pooled_output = self.dense(first_token_tensor)
pooled_output = self.activation(pooled_output)
return pooled_output
|
class_definition
| 30,182 | 30,731 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,753 |
class LxmertPredictionHeadTransform(nn.Module):
def __init__(self, config):
super(LxmertPredictionHeadTransform, self).__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
self.transform_act_fn = ACT2FN[config.hidden_act]
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=1e-12)
def forward(self, hidden_states):
hidden_states = self.dense(hidden_states)
hidden_states = self.transform_act_fn(hidden_states)
hidden_states = self.LayerNorm(hidden_states)
return hidden_states
|
class_definition
| 30,734 | 31,306 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,754 |
class LxmertLMPredictionHead(nn.Module):
def __init__(self, config, lxmert_model_embedding_weights):
super(LxmertLMPredictionHead, self).__init__()
self.transform = LxmertPredictionHeadTransform(config)
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.decoder = nn.Linear(
lxmert_model_embedding_weights.size(1),
lxmert_model_embedding_weights.size(0),
bias=False,
)
self.decoder.weight = lxmert_model_embedding_weights
self.bias = nn.Parameter(torch.zeros(lxmert_model_embedding_weights.size(0)))
def forward(self, hidden_states):
hidden_states = self.transform(hidden_states)
hidden_states = self.decoder(hidden_states) + self.bias
return hidden_states
|
class_definition
| 31,309 | 32,163 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,755 |
class LxmertVisualAnswerHead(nn.Module):
def __init__(self, config, num_labels):
super().__init__()
hid_dim = config.hidden_size
self.logit_fc = nn.Sequential(
nn.Linear(hid_dim, hid_dim * 2),
GeLU(),
nn.LayerNorm(hid_dim * 2, eps=1e-12),
nn.Linear(hid_dim * 2, num_labels),
)
def forward(self, hidden_states):
return self.logit_fc(hidden_states)
|
class_definition
| 32,166 | 32,609 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,756 |
class LxmertVisualObjHead(nn.Module):
def __init__(self, config):
super().__init__()
self.transform = LxmertPredictionHeadTransform(config)
# Decide the use of visual losses
visual_losses = {}
if config.visual_obj_loss:
visual_losses["obj"] = {"shape": (-1,), "num": config.num_object_labels}
if config.visual_attr_loss:
visual_losses["attr"] = {"shape": (-1,), "num": config.num_attr_labels}
if config.visual_feat_loss:
visual_losses["feat"] = {
"shape": (-1, config.visual_feat_dim),
"num": config.visual_feat_dim,
}
self.visual_losses = visual_losses
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.decoder_dict = nn.ModuleDict(
{key: nn.Linear(config.hidden_size, self.visual_losses[key]["num"]) for key in self.visual_losses}
)
def forward(self, hidden_states):
hidden_states = self.transform(hidden_states)
output = {}
for key in self.visual_losses:
output[key] = self.decoder_dict[key](hidden_states)
return output
|
class_definition
| 32,612 | 33,842 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,757 |
class LxmertPreTrainingHeads(nn.Module):
def __init__(self, config, lxmert_model_embedding_weights):
super(LxmertPreTrainingHeads, self).__init__()
self.predictions = LxmertLMPredictionHead(config, lxmert_model_embedding_weights)
self.seq_relationship = nn.Linear(config.hidden_size, 2)
def forward(self, sequence_output, pooled_output):
prediction_scores = self.predictions(sequence_output)
seq_relationship_score = self.seq_relationship(pooled_output)
return prediction_scores, seq_relationship_score
|
class_definition
| 33,845 | 34,404 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,758 |
class LxmertPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = LxmertConfig
load_tf_weights = load_tf_weights_in_lxmert
base_model_prefix = "lxmert"
_supports_param_buffer_assignment = False
def _init_weights(self, module):
"""Initialize the weights"""
if isinstance(module, nn.Linear):
# Slightly different from the TF version which uses truncated_normal for initialization
# cf https://github.com/pytorch/pytorch/pull/5617
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
elif isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
|
class_definition
| 34,407 | 35,568 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,759 |
class LxmertModel(LxmertPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.embeddings = LxmertEmbeddings(config)
self.encoder = LxmertEncoder(config)
self.pooler = LxmertPooler(config)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.embeddings.word_embeddings
def set_input_embeddings(self, new_embeddings):
self.embeddings.word_embeddings = new_embeddings
@add_start_docstrings_to_model_forward(LXMERT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=LxmertModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
visual_feats: Optional[torch.FloatTensor] = None,
visual_pos: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
visual_attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[LxmertModelOutput, Tuple[torch.FloatTensor]]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
self.warn_if_padding_and_no_attention_mask(input_ids, attention_mask)
input_shape = input_ids.size()
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if visual_feats is None:
raise ValueError("`visual_feats` cannot be `None`")
if visual_pos is None:
raise ValueError("`visual_pos` cannot be `None`")
device = input_ids.device if input_ids is not None else inputs_embeds.device
if attention_mask is None:
attention_mask = torch.ones(input_shape, device=device)
if token_type_ids is None:
token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device)
# We create a 3D attention mask from a 2D tensor mask.
# Sizes are [batch_size, 1, 1, to_seq_length]
# So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length]
# this attention mask is more simple than the triangular masking of causal attention
# used in OpenAI GPT, we just need to prepare the broadcast dimension here.
extended_attention_mask = attention_mask.unsqueeze(1).unsqueeze(2)
# Since attention_mask is 1.0 for positions we want to attend and 0.0 for
# masked positions, this operation will create a tensor which is 0.0 for
# positions we want to attend and the dtype's smallest value for masked positions.
# Since we are adding it to the raw scores before the softmax, this is
# effectively the same as removing these entirely.
extended_attention_mask = extended_attention_mask.to(dtype=self.dtype)
extended_attention_mask = (1.0 - extended_attention_mask) * torch.finfo(self.dtype).min
# Process the visual attention mask
if visual_attention_mask is not None:
extended_visual_attention_mask = visual_attention_mask.unsqueeze(1).unsqueeze(2)
extended_visual_attention_mask = extended_visual_attention_mask.to(dtype=self.dtype)
extended_visual_attention_mask = (1.0 - extended_visual_attention_mask) * torch.finfo(self.dtype).min
else:
extended_visual_attention_mask = None
# Positional Word Embeddings
embedding_output = self.embeddings(input_ids, token_type_ids, inputs_embeds)
# Run Lxmert encoder
encoder_outputs = self.encoder(
embedding_output,
extended_attention_mask,
visual_feats=visual_feats,
visual_pos=visual_pos,
visual_attention_mask=extended_visual_attention_mask,
output_attentions=output_attentions,
)
visual_encoder_outputs, lang_encoder_outputs = encoder_outputs[:2]
vision_hidden_states = visual_encoder_outputs[0]
language_hidden_states = lang_encoder_outputs[0]
all_attentions = ()
if output_attentions:
language_attentions = lang_encoder_outputs[1]
vision_attentions = visual_encoder_outputs[1]
cross_encoder_attentions = encoder_outputs[2]
all_attentions = (
language_attentions,
vision_attentions,
cross_encoder_attentions,
)
hidden_states = (language_hidden_states, vision_hidden_states) if output_hidden_states else ()
visual_output = vision_hidden_states[-1]
lang_output = language_hidden_states[-1]
pooled_output = self.pooler(lang_output)
if not return_dict:
return (lang_output, visual_output, pooled_output) + hidden_states + all_attentions
return LxmertModelOutput(
pooled_output=pooled_output,
language_output=lang_output,
vision_output=visual_output,
language_hidden_states=language_hidden_states if output_hidden_states else None,
vision_hidden_states=vision_hidden_states if output_hidden_states else None,
language_attentions=language_attentions if output_attentions else None,
vision_attentions=vision_attentions if output_attentions else None,
cross_encoder_attentions=cross_encoder_attentions if output_attentions else None,
)
|
class_definition
| 40,260 | 46,587 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,760 |
class LxmertForPreTraining(LxmertPreTrainedModel):
_tied_weights_keys = ["cls.predictions.decoder.weight"]
def __init__(self, config):
super().__init__(config)
# Configuration
self.config = config
self.num_qa_labels = config.num_qa_labels
self.visual_loss_normalizer = config.visual_loss_normalizer
# Use of pretraining tasks
self.task_mask_lm = config.task_mask_lm
self.task_obj_predict = config.task_obj_predict
self.task_matched = config.task_matched
self.task_qa = config.task_qa
# Lxmert backbone
self.lxmert = LxmertModel(config)
# Pre-training heads
self.cls = LxmertPreTrainingHeads(config, self.lxmert.embeddings.word_embeddings.weight)
if self.task_obj_predict:
self.obj_predict_head = LxmertVisualObjHead(config)
if self.task_qa:
self.answer_head = LxmertVisualAnswerHead(config, self.num_qa_labels)
# Weight initialization
# Initialize weights and apply final processing
self.post_init()
# Loss functions
self.loss_fcts = {
"l2": SmoothL1Loss(reduction="none"),
"visual_ce": CrossEntropyLoss(reduction="none"),
"ce": CrossEntropyLoss(),
}
visual_losses = {}
if config.visual_obj_loss:
visual_losses["obj"] = {
"shape": (-1,),
"num": config.num_object_labels,
"loss": "visual_ce",
}
if config.visual_attr_loss:
visual_losses["attr"] = {
"shape": (-1,),
"num": config.num_attr_labels,
"loss": "visual_ce",
}
if config.visual_feat_loss:
visual_losses["feat"] = {
"shape": (-1, config.visual_feat_dim),
"num": config.visual_feat_dim,
"loss": "l2",
}
self.visual_losses = visual_losses
def resize_token_embeddings(self, new_num_tokens: int, pad_to_multiple_of: Optional[int] = None) -> nn.Embedding:
# Adding the following steps to resize bias to match the shape of resized embeddings
new_embeddings = super().resize_token_embeddings(new_num_tokens, pad_to_multiple_of)
self.cls.predictions.bias = self._resize_bias(self.cls.predictions.bias, new_num_tokens)
return new_embeddings
def _resize_bias(self, bias, new_num_tokens: int):
old_num_tokens = bias.shape[0]
if new_num_tokens <= old_num_tokens:
new_bias = bias[:new_num_tokens]
else:
extra_bias = torch.zeros(new_num_tokens - old_num_tokens, device=bias.device)
new_bias = torch.cat([bias, extra_bias])
new_bias = nn.Parameter(new_bias)
return new_bias
def resize_num_qa_labels(self, num_labels):
"""
Build a resized question answering linear layer Module from a provided new linear layer. Increasing the size
will add newly initialized weights. Reducing the size will remove weights from the end
Args:
num_labels (`int`, *optional*):
New number of labels in the linear layer weight matrix. Increasing the size will add newly initialized
weights at the end. Reducing the size will remove weights from the end. If not provided or `None`, just
returns a pointer to the qa labels ``torch.nn.Linear``` module of the model without doing anything.
Return:
`torch.nn.Linear`: Pointer to the resized Linear layer or the old Linear layer
"""
cur_qa_logit_layer = self.get_qa_logit_layer()
if num_labels is None or cur_qa_logit_layer is None:
return
new_qa_logit_layer = self._resize_qa_labels(num_labels)
self.config.num_qa_labels = num_labels
self.num_qa_labels = num_labels
return new_qa_logit_layer
def _resize_qa_labels(self, num_labels):
cur_qa_logit_layer = self.get_qa_logit_layer()
new_qa_logit_layer = self._get_resized_qa_labels(cur_qa_logit_layer, num_labels)
self._set_qa_logit_layer(new_qa_logit_layer)
return self.get_qa_logit_layer()
def get_qa_logit_layer(self) -> nn.Module:
"""
Returns the linear layer that produces question answering logits.
Returns:
`nn.Module`: A torch module mapping the question answering prediction hidden states or `None` if LXMERT
does not have a visual answering head.
"""
if hasattr(self, "answer_head"):
return self.answer_head.logit_fc[-1]
def _set_qa_logit_layer(self, qa_logit_layer):
self.answer_head.logit_fc[-1] = qa_logit_layer
def _get_resized_qa_labels(self, cur_qa_logit_layer, num_labels):
if num_labels is None:
return cur_qa_logit_layer
cur_qa_labels, hidden_dim = cur_qa_logit_layer.weight.size()
if cur_qa_labels == num_labels:
return cur_qa_logit_layer
# Build new linear output
if getattr(cur_qa_logit_layer, "bias", None) is not None:
new_qa_logit_layer = nn.Linear(hidden_dim, num_labels)
else:
new_qa_logit_layer = nn.Linear(hidden_dim, num_labels, bias=False)
new_qa_logit_layer.to(cur_qa_logit_layer.weight.device)
# initialize all new labels
self._init_weights(new_qa_logit_layer)
# Copy labels from the previous weights
num_labels_to_copy = min(cur_qa_labels, num_labels)
new_qa_logit_layer.weight.data[:num_labels_to_copy, :] = cur_qa_logit_layer.weight.data[:num_labels_to_copy, :]
if getattr(cur_qa_logit_layer, "bias", None) is not None:
new_qa_logit_layer.bias.data[:num_labels_to_copy] = cur_qa_logit_layer.bias.data[:num_labels_to_copy]
return new_qa_logit_layer
@add_start_docstrings_to_model_forward(LXMERT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@replace_return_docstrings(output_type=LxmertForPreTrainingOutput, config_class=_CONFIG_FOR_DOC)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
visual_feats: Optional[torch.FloatTensor] = None,
visual_pos: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
visual_attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
obj_labels: Optional[Dict[str, Tuple[torch.FloatTensor, torch.FloatTensor]]] = None,
matched_label: Optional[torch.LongTensor] = None,
ans: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
**kwargs,
) -> Union[LxmertForPreTrainingOutput, Tuple[torch.FloatTensor]]:
r"""
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ...,
config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the
loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`
obj_labels (`Dict[Str: Tuple[Torch.FloatTensor, Torch.FloatTensor]]`, *optional*):
each key is named after each one of the visual losses and each element of the tuple is of the shape
`(batch_size, num_features)` and `(batch_size, num_features, visual_feature_dim)` for each the label id and
the label score respectively
matched_label (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
Labels for computing the whether or not the text input matches the image (classification) loss. Input
should be a sequence pair (see `input_ids` docstring) Indices should be in `[0, 1]`:
- 0 indicates that the sentence does not match the image,
- 1 indicates that the sentence does match the image.
ans (`Torch.Tensor` of shape `(batch_size)`, *optional*):
a one hot representation hof the correct answer *optional*
Returns:
"""
if "masked_lm_labels" in kwargs:
warnings.warn(
"The `masked_lm_labels` argument is deprecated and will be removed in a future version, use `labels`"
" instead.",
FutureWarning,
)
labels = kwargs.pop("masked_lm_labels")
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
device = input_ids.device if input_ids is not None else inputs_embeds.device
lxmert_output = self.lxmert(
input_ids=input_ids,
visual_feats=visual_feats,
visual_pos=visual_pos,
token_type_ids=token_type_ids,
attention_mask=attention_mask,
visual_attention_mask=visual_attention_mask,
inputs_embeds=inputs_embeds,
output_hidden_states=output_hidden_states,
output_attentions=output_attentions,
return_dict=return_dict,
)
lang_output, visual_output, pooled_output = (
lxmert_output[0],
lxmert_output[1],
lxmert_output[2],
)
lang_prediction_scores, cross_relationship_score = self.cls(lang_output, pooled_output)
if self.task_qa:
answer_score = self.answer_head(pooled_output)
else:
answer_score = pooled_output[0][0]
total_loss = (
None
if (labels is None and matched_label is None and obj_labels is None and ans is None)
else torch.tensor(0.0, device=device)
)
if labels is not None and self.task_mask_lm:
masked_lm_loss = self.loss_fcts["ce"](
lang_prediction_scores.view(-1, self.config.vocab_size),
labels.view(-1),
)
total_loss += masked_lm_loss
if matched_label is not None and self.task_matched:
matched_loss = self.loss_fcts["ce"](cross_relationship_score.view(-1, 2), matched_label.view(-1))
total_loss += matched_loss
if obj_labels is not None and self.task_obj_predict:
total_visual_loss = torch.tensor(0.0, device=input_ids.device)
visual_prediction_scores_dict = self.obj_predict_head(visual_output)
for key, key_info in self.visual_losses.items():
label, mask_conf = obj_labels[key]
output_dim = key_info["num"]
loss_fct_name = key_info["loss"]
label_shape = key_info["shape"]
weight = self.visual_loss_normalizer
visual_loss_fct = self.loss_fcts[loss_fct_name]
visual_prediction_scores = visual_prediction_scores_dict[key]
visual_loss = visual_loss_fct(
visual_prediction_scores.view(-1, output_dim),
label.view(label_shape),
)
if visual_loss.dim() > 1: # Regression Losses
visual_loss = visual_loss.mean(1)
visual_loss = (visual_loss * mask_conf.view(-1)).mean() * weight
total_visual_loss += visual_loss
total_loss += total_visual_loss
if ans is not None and self.task_qa:
answer_loss = self.loss_fcts["ce"](answer_score.view(-1, self.num_qa_labels), ans.view(-1))
total_loss += answer_loss
if not return_dict:
output = (
lang_prediction_scores,
cross_relationship_score,
answer_score,
) + lxmert_output[3:]
return ((total_loss,) + output) if total_loss is not None else output
return LxmertForPreTrainingOutput(
loss=total_loss,
prediction_logits=lang_prediction_scores,
cross_relationship_score=cross_relationship_score,
question_answering_score=answer_score,
language_hidden_states=lxmert_output.language_hidden_states,
vision_hidden_states=lxmert_output.vision_hidden_states,
language_attentions=lxmert_output.language_attentions,
vision_attentions=lxmert_output.vision_attentions,
cross_encoder_attentions=lxmert_output.cross_encoder_attentions,
)
|
class_definition
| 46,709 | 59,388 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,761 |
class LxmertForQuestionAnswering(LxmertPreTrainedModel):
def __init__(self, config):
super().__init__(config)
# Configuration
self.config = config
self.num_qa_labels = config.num_qa_labels
self.visual_loss_normalizer = config.visual_loss_normalizer
# Lxmert backbone
self.lxmert = LxmertModel(config)
self.answer_head = LxmertVisualAnswerHead(config, self.num_qa_labels)
# Weight initialization
# Initialize weights and apply final processing
self.post_init()
# Loss function
self.loss = CrossEntropyLoss()
def resize_num_qa_labels(self, num_labels):
"""
Build a resized question answering linear layer Module from a provided new linear layer. Increasing the size
will add newly initialized weights. Reducing the size will remove weights from the end
Args:
num_labels (`int`, *optional*):
New number of labels in the linear layer weight matrix. Increasing the size will add newly initialized
weights at the end. Reducing the size will remove weights from the end. If not provided or `None`, just
returns a pointer to the qa labels ``torch.nn.Linear``` module of the model without doing anything.
Return:
`torch.nn.Linear`: Pointer to the resized Linear layer or the old Linear layer
"""
cur_qa_logit_layer = self.get_qa_logit_layer()
if num_labels is None or cur_qa_logit_layer is None:
return
new_qa_logit_layer = self._resize_qa_labels(num_labels)
self.config.num_qa_labels = num_labels
self.num_qa_labels = num_labels
return new_qa_logit_layer
def _resize_qa_labels(self, num_labels):
cur_qa_logit_layer = self.get_qa_logit_layer()
new_qa_logit_layer = self._get_resized_qa_labels(cur_qa_logit_layer, num_labels)
self._set_qa_logit_layer(new_qa_logit_layer)
return self.get_qa_logit_layer()
def get_qa_logit_layer(self) -> nn.Module:
"""
Returns the linear layer that produces question answering logits
Returns:
`nn.Module`: A torch module mapping the question answering prediction hidden states. `None`: A NoneType
object if Lxmert does not have the visual answering head.
"""
if hasattr(self, "answer_head"):
return self.answer_head.logit_fc[-1]
def _set_qa_logit_layer(self, qa_logit_layer):
self.answer_head.logit_fc[-1] = qa_logit_layer
def _get_resized_qa_labels(self, cur_qa_logit_layer, num_labels):
if num_labels is None:
return cur_qa_logit_layer
cur_qa_labels, hidden_dim = cur_qa_logit_layer.weight.size()
if cur_qa_labels == num_labels:
return cur_qa_logit_layer
# Build new linear output
if getattr(cur_qa_logit_layer, "bias", None) is not None:
new_qa_logit_layer = nn.Linear(hidden_dim, num_labels)
else:
new_qa_logit_layer = nn.Linear(hidden_dim, num_labels, bias=False)
new_qa_logit_layer.to(cur_qa_logit_layer.weight.device)
# initialize all new labels
self._init_weights(new_qa_logit_layer)
# Copy labels from the previous weights
num_labels_to_copy = min(cur_qa_labels, num_labels)
new_qa_logit_layer.weight.data[:num_labels_to_copy, :] = cur_qa_logit_layer.weight.data[:num_labels_to_copy, :]
if getattr(cur_qa_logit_layer, "bias", None) is not None:
new_qa_logit_layer.bias.data[:num_labels_to_copy] = cur_qa_logit_layer.bias.data[:num_labels_to_copy]
return new_qa_logit_layer
@add_start_docstrings_to_model_forward(LXMERT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=LxmertForQuestionAnsweringOutput,
config_class=_CONFIG_FOR_DOC,
)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
visual_feats: Optional[torch.FloatTensor] = None,
visual_pos: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
visual_attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[LxmertForQuestionAnsweringOutput, Tuple[torch.FloatTensor]]:
r"""
labels (`Torch.Tensor` of shape `(batch_size)`, *optional*):
A one-hot representation of the correct answer
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
lxmert_output = self.lxmert(
input_ids=input_ids,
visual_feats=visual_feats,
visual_pos=visual_pos,
token_type_ids=token_type_ids,
attention_mask=attention_mask,
visual_attention_mask=visual_attention_mask,
inputs_embeds=inputs_embeds,
output_hidden_states=output_hidden_states,
output_attentions=output_attentions,
return_dict=return_dict,
)
pooled_output = lxmert_output[2]
answer_score = self.answer_head(pooled_output)
loss = None
if labels is not None:
loss = self.loss(answer_score.view(-1, self.num_qa_labels), labels.view(-1))
if not return_dict:
output = (answer_score,) + lxmert_output[3:]
return (loss,) + output if loss is not None else output
return LxmertForQuestionAnsweringOutput(
loss=loss,
question_answering_score=answer_score,
language_hidden_states=lxmert_output.language_hidden_states,
vision_hidden_states=lxmert_output.vision_hidden_states,
language_attentions=lxmert_output.language_attentions,
vision_attentions=lxmert_output.vision_attentions,
cross_encoder_attentions=lxmert_output.cross_encoder_attentions,
)
|
class_definition
| 59,528 | 65,841 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_lxmert.py
| null | 4,762 |
class LxmertTokenizerFast(PreTrainedTokenizerFast):
r"""
Construct a "fast" Lxmert tokenizer (backed by HuggingFace's *tokenizers* library). Based on WordPiece.
This tokenizer inherits from [`PreTrainedTokenizerFast`] which contains most of the main methods. Users should
refer to this superclass for more information regarding those methods.
Args:
vocab_file (`str`):
File containing the vocabulary.
do_lower_case (`bool`, *optional*, defaults to `True`):
Whether or not to lowercase the input when tokenizing.
unk_token (`str`, *optional*, defaults to `"[UNK]"`):
The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this
token instead.
sep_token (`str`, *optional*, defaults to `"[SEP]"`):
The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for
sequence classification or for a text and a question for question answering. It is also used as the last
token of a sequence built with special tokens.
pad_token (`str`, *optional*, defaults to `"[PAD]"`):
The token used for padding, for example when batching sequences of different lengths.
cls_token (`str`, *optional*, defaults to `"[CLS]"`):
The classifier token which is used when doing sequence classification (classification of the whole sequence
instead of per-token classification). It is the first token of the sequence when built with special tokens.
mask_token (`str`, *optional*, defaults to `"[MASK]"`):
The token used for masking values. This is the token used when training this model with masked language
modeling. This is the token which the model will try to predict.
clean_text (`bool`, *optional*, defaults to `True`):
Whether or not to clean the text before tokenization by removing any control characters and replacing all
whitespaces by the classic one.
tokenize_chinese_chars (`bool`, *optional*, defaults to `True`):
Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see [this
issue](https://github.com/huggingface/transformers/issues/328)).
strip_accents (`bool`, *optional*):
Whether or not to strip all accents. If this option is not specified, then it will be determined by the
value for `lowercase` (as in the original Lxmert).
wordpieces_prefix (`str`, *optional*, defaults to `"##"`):
The prefix for subwords.
"""
vocab_files_names = VOCAB_FILES_NAMES
slow_tokenizer_class = LxmertTokenizer
def __init__(
self,
vocab_file=None,
tokenizer_file=None,
do_lower_case=True,
unk_token="[UNK]",
sep_token="[SEP]",
pad_token="[PAD]",
cls_token="[CLS]",
mask_token="[MASK]",
tokenize_chinese_chars=True,
strip_accents=None,
**kwargs,
):
super().__init__(
vocab_file,
tokenizer_file=tokenizer_file,
do_lower_case=do_lower_case,
unk_token=unk_token,
sep_token=sep_token,
pad_token=pad_token,
cls_token=cls_token,
mask_token=mask_token,
tokenize_chinese_chars=tokenize_chinese_chars,
strip_accents=strip_accents,
**kwargs,
)
normalizer_state = json.loads(self.backend_tokenizer.normalizer.__getstate__())
if (
normalizer_state.get("lowercase", do_lower_case) != do_lower_case
or normalizer_state.get("strip_accents", strip_accents) != strip_accents
or normalizer_state.get("handle_chinese_chars", tokenize_chinese_chars) != tokenize_chinese_chars
):
normalizer_class = getattr(normalizers, normalizer_state.pop("type"))
normalizer_state["lowercase"] = do_lower_case
normalizer_state["strip_accents"] = strip_accents
normalizer_state["handle_chinese_chars"] = tokenize_chinese_chars
self.backend_tokenizer.normalizer = normalizer_class(**normalizer_state)
self.do_lower_case = do_lower_case
def build_inputs_with_special_tokens(self, token_ids_0, token_ids_1=None):
"""
Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and
adding special tokens. A Lxmert sequence has the following format:
- single sequence: `[CLS] X [SEP]`
- pair of sequences: `[CLS] A [SEP] B [SEP]`
Args:
token_ids_0 (`List[int]`):
List of IDs to which the special tokens will be added.
token_ids_1 (`List[int]`, *optional*):
Optional second list of IDs for sequence pairs.
Returns:
`List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens.
"""
output = [self.cls_token_id] + token_ids_0 + [self.sep_token_id]
if token_ids_1 is not None:
output += token_ids_1 + [self.sep_token_id]
return output
def create_token_type_ids_from_sequences(
self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None
) -> List[int]:
"""
Create a mask from the two sequences passed to be used in a sequence-pair classification task. A Lxmert sequence
pair mask has the following format:
```
0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1
| first sequence | second sequence |
```
If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s).
Args:
token_ids_0 (`List[int]`):
List of IDs.
token_ids_1 (`List[int]`, *optional*):
Optional second list of IDs for sequence pairs.
Returns:
`List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s).
"""
sep = [self.sep_token_id]
cls = [self.cls_token_id]
if token_ids_1 is None:
return len(cls + token_ids_0 + sep) * [0]
return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1]
def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]:
files = self._tokenizer.model.save(save_directory, name=filename_prefix)
return tuple(files)
|
class_definition
| 1,098 | 7,719 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/tokenization_lxmert_fast.py
| null | 4,763 |
class TFLxmertModelOutput(ModelOutput):
"""
Lxmert's outputs that contain the last hidden states, pooled outputs, and attention probabilities for the language,
visual, and, cross-modality encoders. (note: the visual encoder in Lxmert is referred to as the "relation-ship"
encoder")
Args:
language_output (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the language encoder.
vision_output (`tf.Tensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the visual encoder.
pooled_output (`tf.Tensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification, CLS, token) further processed
by a Linear layer and a Tanh activation function. The Linear
language_hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `tf.Tensor` (one for input features + one for the output of each cross-modality layer) of shape
`(batch_size, sequence_length, hidden_size)`.
vision_hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `tf.Tensor` (one for input features + one for the output of each cross-modality layer) of shape
`(batch_size, sequence_length, hidden_size)`.
language_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
vision_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
cross_encoder_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
language_output: tf.Tensor | None = None
vision_output: tf.Tensor | None = None
pooled_output: tf.Tensor | None = None
language_hidden_states: Tuple[tf.Tensor] | None = None
vision_hidden_states: Tuple[tf.Tensor] | None = None
language_attentions: Tuple[tf.Tensor] | None = None
vision_attentions: Tuple[tf.Tensor] | None = None
cross_encoder_attentions: Tuple[tf.Tensor] | None = None
|
class_definition
| 1,604 | 4,892 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,764 |
class TFLxmertForPreTrainingOutput(ModelOutput):
"""
Output type of [`LxmertForPreTraining`].
Args:
loss (*optional*, returned when `labels` is provided, `tf.Tensor` of shape `(1,)`):
Total loss as the sum of the masked language modeling loss and the next sequence prediction
(classification) loss.
prediction_logits (`tf.Tensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
cross_relationship_score (`tf.Tensor` of shape `(batch_size, 2)`):
Prediction scores of the textual matching objective (classification) head (scores of True/False
continuation before SoftMax).
question_answering_score (`tf.Tensor` of shape `(batch_size, n_qa_answers)`):
Prediction scores of question answering objective (classification).
language_hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `tf.Tensor` (one for input features + one for the output of each cross-modality layer) of shape
`(batch_size, sequence_length, hidden_size)`.
vision_hidden_states (`tuple(tf.Tensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `tf.Tensor` (one for input features + one for the output of each cross-modality layer) of shape
`(batch_size, sequence_length, hidden_size)`.
language_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
vision_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
cross_encoder_attentions (`tuple(tf.Tensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `tf.Tensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
loss: tf.Tensor | None = None
prediction_logits: tf.Tensor | None = None
cross_relationship_score: tf.Tensor | None = None
question_answering_score: tf.Tensor | None = None
language_hidden_states: Tuple[tf.Tensor] | None = None
vision_hidden_states: Tuple[tf.Tensor] | None = None
language_attentions: Tuple[tf.Tensor] | None = None
vision_attentions: Tuple[tf.Tensor] | None = None
cross_encoder_attentions: Tuple[tf.Tensor] | None = None
|
class_definition
| 4,906 | 8,253 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,765 |
class TFLxmertVisualFeatureEncoder(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
# Object feature encoding
self.visn_fc = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="visn_fc",
)
self.visn_layer_norm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="visn_layer_norm")
# Box position encoding
self.box_fc = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="box_fc",
)
self.box_layer_norm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="box_layer_norm")
self.dropout = keras.layers.Dropout(config.hidden_dropout_prob)
self.feat_dim = config.visual_feat_dim
self.pos_dim = config.visual_pos_dim
self.config = config
def call(self, visn_input, training=False):
feats, boxes = visn_input
x = self.visn_fc(feats)
x = self.visn_layer_norm(x)
y = self.box_fc(boxes)
y = self.box_layer_norm(y)
output = (x + y) / 2
output = self.dropout(output, training=training)
return output
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "visn_fc", None) is not None:
with tf.name_scope(self.visn_fc.name):
self.visn_fc.build([None, None, self.feat_dim])
if getattr(self, "visn_layer_norm", None) is not None:
with tf.name_scope(self.visn_layer_norm.name):
self.visn_layer_norm.build([None, None, self.config.hidden_size])
if getattr(self, "box_fc", None) is not None:
with tf.name_scope(self.box_fc.name):
self.box_fc.build([None, None, self.pos_dim])
if getattr(self, "box_layer_norm", None) is not None:
with tf.name_scope(self.box_layer_norm.name):
self.box_layer_norm.build([None, None, self.config.hidden_size])
|
class_definition
| 8,256 | 10,432 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,766 |
class TFLxmertEmbeddings(keras.layers.Layer):
"""Construct the embeddings from word, position and token_type embeddings."""
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.config = config
self.hidden_size = config.hidden_size
self.max_position_embeddings = config.max_position_embeddings
self.initializer_range = config.initializer_range
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = keras.layers.Dropout(rate=config.hidden_dropout_prob)
def build(self, input_shape=None):
with tf.name_scope("word_embeddings"):
self.weight = self.add_weight(
name="weight",
shape=[self.config.vocab_size, self.hidden_size],
initializer=get_initializer(initializer_range=self.initializer_range),
)
with tf.name_scope("token_type_embeddings"):
self.token_type_embeddings = self.add_weight(
name="embeddings",
shape=[self.config.type_vocab_size, self.hidden_size],
initializer=get_initializer(initializer_range=self.initializer_range),
)
with tf.name_scope("position_embeddings"):
self.position_embeddings = self.add_weight(
name="embeddings",
shape=[self.max_position_embeddings, self.hidden_size],
initializer=get_initializer(initializer_range=self.initializer_range),
)
if self.built:
return
self.built = True
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
def call(self, input_ids=None, token_type_ids=None, inputs_embeds=None, training=False):
"""
Applies embedding based on inputs tensor.
Returns:
final_embeddings (`tf.Tensor`): output embedding tensor.
"""
assert not (input_ids is None and inputs_embeds is None)
if input_ids is not None:
check_embeddings_within_bounds(input_ids, self.config.vocab_size)
inputs_embeds = tf.gather(params=self.weight, indices=input_ids)
input_shape = shape_list(inputs_embeds)[:-1]
if token_type_ids is None:
token_type_ids = tf.fill(dims=input_shape, value=0)
position_ids = tf.expand_dims(tf.range(start=0, limit=input_shape[-1]), axis=0)
position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids)
token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids)
final_embeddings = inputs_embeds + position_embeds + token_type_embeds
final_embeddings = self.LayerNorm(inputs=final_embeddings)
final_embeddings = self.dropout(inputs=final_embeddings, training=training)
return final_embeddings
|
class_definition
| 10,435 | 13,449 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,767 |
class TFLxmertAttention(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
if config.hidden_size % config.num_attention_heads != 0:
raise ValueError(
f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention "
f"heads ({config.num_attention_heads}"
)
self.num_attention_heads = config.num_attention_heads
assert config.hidden_size % config.num_attention_heads == 0
self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
self.all_head_size = self.num_attention_heads * self.attention_head_size
self.query = keras.layers.Dense(
self.all_head_size,
kernel_initializer=get_initializer(config.initializer_range),
name="query",
)
self.key = keras.layers.Dense(
self.all_head_size,
kernel_initializer=get_initializer(config.initializer_range),
name="key",
)
self.value = keras.layers.Dense(
self.all_head_size,
kernel_initializer=get_initializer(config.initializer_range),
name="value",
)
self.dropout = keras.layers.Dropout(config.attention_probs_dropout_prob)
self.ctx_dim = config.hidden_size
self.config = config
def transpose_for_scores(self, x, batch_size):
# Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size]
x = tf.reshape(x, (batch_size, -1, self.num_attention_heads, self.attention_head_size))
return tf.transpose(x, perm=[0, 2, 1, 3])
def call(self, hidden_states, context, attention_mask, output_attentions, training=False):
batch_size = shape_list(hidden_states)[0]
mixed_query_layer = self.query(hidden_states)
mixed_key_layer = self.key(context)
mixed_value_layer = self.value(context)
query_layer = self.transpose_for_scores(mixed_query_layer, batch_size)
key_layer = self.transpose_for_scores(mixed_key_layer, batch_size)
value_layer = self.transpose_for_scores(mixed_value_layer, batch_size)
# Take the dot product between "query" and "key" to get the raw attention scores.
attention_scores = tf.matmul(
query_layer, key_layer, transpose_b=True
) # (batch size, num_heads, seq_len_q, seq_len_k)
dk = tf.cast(shape_list(key_layer)[-1], dtype=attention_scores.dtype) # scale attention_scores
attention_scores = attention_scores / tf.math.sqrt(dk)
if attention_mask is not None:
# Apply the attention mask is (precomputed for all layers in TFLxmertModel call() function)
attention_mask = tf.cast(attention_mask, dtype=attention_scores.dtype)
attention_scores = attention_scores + attention_mask
# Normalize the attention scores to probabilities.
attention_probs = stable_softmax(attention_scores, axis=-1)
# This is actually dropping out entire tokens to attend to, which might
# seem a bit unusual, but is taken from the original Transformer paper.
attention_probs = self.dropout(attention_probs, training=training)
context_layer = tf.matmul(attention_probs, value_layer)
context_layer = tf.transpose(context_layer, perm=[0, 2, 1, 3])
context_layer = tf.reshape(
context_layer, (batch_size, -1, self.all_head_size)
) # (batch_size, seq_len_q, all_head_size)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "query", None) is not None:
with tf.name_scope(self.query.name):
self.query.build([None, None, self.config.hidden_size])
if getattr(self, "key", None) is not None:
with tf.name_scope(self.key.name):
self.key.build([None, None, self.ctx_dim])
if getattr(self, "value", None) is not None:
with tf.name_scope(self.value.name):
self.value.build([None, None, self.ctx_dim])
|
class_definition
| 13,452 | 17,769 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,768 |
class TFLxmertIntermediate(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
config.intermediate_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
if isinstance(config.hidden_act, str):
self.intermediate_act_fn = get_tf_activation(config.hidden_act)
else:
self.intermediate_act_fn = config.hidden_act
self.config = config
def call(self, hidden_states):
hidden_states = self.dense(hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
|
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| 17,772 | 18,769 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,769 |
class TFLxmertOutput(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = keras.layers.Dropout(config.hidden_dropout_prob)
self.config = config
def call(self, hidden_states, input_tensor, training=False):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states, training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.intermediate_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
|
class_definition
| 18,772 | 20,031 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,770 |
class TFLxmertAttentionOutput(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = keras.layers.Dropout(config.hidden_dropout_prob)
self.config = config
def call(self, hidden_states, input_tensor, training=False):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states, training=training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
|
class_definition
| 20,034 | 21,304 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,771 |
class TFLxmertSelfAttentionLayer(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.self = TFLxmertAttention(config, name="self")
self.attention_output = TFLxmertAttentionOutput(config, name="output")
def call(self, input_tensor, attention_mask, output_attentions, training=False):
# Self attention attends to itself, thus keys and queries are the same (input_tensor).
self_output = self.self(input_tensor, input_tensor, attention_mask, output_attentions)
if output_attentions:
attention_probs = self_output[1]
attention_output = self.attention_output(self_output[0], input_tensor)
return (attention_output, attention_probs) if output_attentions else (attention_output,)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "self", None) is not None:
with tf.name_scope(self.self.name):
self.self.build(None)
if getattr(self, "attention_output", None) is not None:
with tf.name_scope(self.attention_output.name):
self.attention_output.build(None)
|
class_definition
| 21,307 | 22,522 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,772 |
class TFLxmertCrossAttentionLayer(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.att = TFLxmertAttention(config, name="att")
self.attention_output = TFLxmertAttentionOutput(config, name="output")
def call(
self,
input_tensor,
ctx_tensor,
ctx_att_mask,
output_attentions=False,
training=False,
):
output = self.att(input_tensor, ctx_tensor, ctx_att_mask, output_attentions, training=training)
if output_attentions:
attention_probs = output[1]
attention_output = self.attention_output(output[0], input_tensor, training=training)
outputs = (attention_output, attention_probs) if output_attentions else (attention_output,)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "att", None) is not None:
with tf.name_scope(self.att.name):
self.att.build(None)
if getattr(self, "attention_output", None) is not None:
with tf.name_scope(self.attention_output.name):
self.attention_output.build(None)
|
class_definition
| 22,525 | 23,756 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,773 |
class TFLxmertLayer(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.attention = TFLxmertSelfAttentionLayer(config, name="attention")
self.intermediate = TFLxmertIntermediate(config, name="intermediate")
self.transformer_output = TFLxmertOutput(config, name="output")
def call(self, hidden_states, attention_mask, output_attentions, training=False):
attention_outputs = self.attention(hidden_states, attention_mask, output_attentions, training=training)
attention_output = attention_outputs[0]
intermediate_output = self.intermediate(attention_output)
layer_output = self.transformer_output(intermediate_output, attention_output, training=training)
outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "attention", None) is not None:
with tf.name_scope(self.attention.name):
self.attention.build(None)
if getattr(self, "intermediate", None) is not None:
with tf.name_scope(self.intermediate.name):
self.intermediate.build(None)
if getattr(self, "transformer_output", None) is not None:
with tf.name_scope(self.transformer_output.name):
self.transformer_output.build(None)
|
class_definition
| 23,759 | 25,242 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,774 |
class TFLxmertXLayer(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.visual_attention = TFLxmertCrossAttentionLayer(config, name="visual_attention")
# Self-attention Layers
self.lang_self_att = TFLxmertSelfAttentionLayer(config, name="lang_self_att")
self.visn_self_att = TFLxmertSelfAttentionLayer(config, name="visn_self_att")
# Intermediate and Output Layers (FFNs)
self.lang_inter = TFLxmertIntermediate(config, name="lang_inter")
self.lang_output = TFLxmertOutput(config, name="lang_output")
self.visn_inter = TFLxmertIntermediate(config, name="visn_inter")
self.visn_output = TFLxmertOutput(config, name="visn_output")
def cross_att(
self,
lang_input,
lang_attention_mask,
visn_input,
visn_attention_mask,
output_attentions,
training=False,
):
# Cross Attention
# Keras saving and loading model *does not work* with the same inputs for two layers.
lang_attention_lang_input = tf.identity(lang_input)
visn_attention_lang_input = tf.identity(lang_input)
lang_attention_visn_input = tf.identity(visn_input)
visn_attention_visn_input = tf.identity(visn_input)
lang_att_output = self.visual_attention(
lang_attention_lang_input,
lang_attention_visn_input,
visn_attention_mask,
output_attentions=output_attentions,
training=training,
)
visn_att_output = self.visual_attention(
visn_attention_visn_input,
visn_attention_lang_input,
lang_attention_mask,
output_attentions=output_attentions,
training=training,
)
return lang_att_output, visn_att_output
def self_att(
self,
lang_input,
lang_attention_mask,
visn_input,
visn_attention_mask,
training=False,
):
# Self Attention
output_attentions = False
lang_att_output = self.lang_self_att(lang_input, lang_attention_mask, output_attentions, training=training)
visn_att_output = self.visn_self_att(visn_input, visn_attention_mask, output_attentions, training=training)
return lang_att_output[0], visn_att_output[0]
def output_fc(self, lang_input, visn_input, training=False):
# FC layers
lang_inter_output = self.lang_inter(lang_input)
visn_inter_output = self.visn_inter(visn_input)
# Layer output
lang_output = self.lang_output(lang_inter_output, lang_input, training)
visn_output = self.visn_output(visn_inter_output, visn_input, training)
return lang_output, visn_output
def call(
self,
lang_feats,
lang_attention_mask,
visn_feats,
visn_attention_mask,
output_attentions,
training=False,
):
lang_att_output = lang_feats
visn_att_output = visn_feats
lang_att_output, visn_att_output = self.cross_att(
lang_att_output,
lang_attention_mask,
visn_att_output,
visn_attention_mask,
output_attentions,
training=training,
)
attention_probs = lang_att_output[1:]
lang_att_output, visn_att_output = self.self_att(
lang_att_output[0],
lang_attention_mask,
visn_att_output[0],
visn_attention_mask,
training=training,
)
lang_output, visn_output = self.output_fc(lang_att_output, visn_att_output, training=training)
return (lang_output, visn_output, attention_probs[0]) if output_attentions else (lang_output, visn_output)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "visual_attention", None) is not None:
with tf.name_scope(self.visual_attention.name):
self.visual_attention.build(None)
if getattr(self, "lang_self_att", None) is not None:
with tf.name_scope(self.lang_self_att.name):
self.lang_self_att.build(None)
if getattr(self, "visn_self_att", None) is not None:
with tf.name_scope(self.visn_self_att.name):
self.visn_self_att.build(None)
if getattr(self, "lang_inter", None) is not None:
with tf.name_scope(self.lang_inter.name):
self.lang_inter.build(None)
if getattr(self, "lang_output", None) is not None:
with tf.name_scope(self.lang_output.name):
self.lang_output.build(None)
if getattr(self, "visn_inter", None) is not None:
with tf.name_scope(self.visn_inter.name):
self.visn_inter.build(None)
if getattr(self, "visn_output", None) is not None:
with tf.name_scope(self.visn_output.name):
self.visn_output.build(None)
|
class_definition
| 25,245 | 30,278 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,775 |
class TFLxmertEncoder(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.visn_fc = TFLxmertVisualFeatureEncoder(config, name="visn_fc")
# Number of layers
self.num_l_layers = config.l_layers
self.num_x_layers = config.x_layers
self.num_r_layers = config.r_layers
# Layers
# Using self.layer instead of self.l_layer to support loading BERT weights.
self.layer = [TFLxmertLayer(config, name=f"layer_._{i}") for i in range(self.num_l_layers)]
self.x_layers = [TFLxmertXLayer(config, name=f"x_layers_._{i}") for i in range(self.num_x_layers)]
self.r_layers = [TFLxmertLayer(config, name=f"r_layers_._{i}") for i in range(self.num_r_layers)]
self.config = config
def call(
self,
lang_feats=None,
lang_attention_mask=None,
visual_feats=None,
visual_pos=None,
visual_attention_mask=None,
output_attentions=None,
training=False,
):
vision_hidden_states = ()
language_hidden_states = ()
vision_attentions = () if output_attentions or self.config.output_attentions else None
language_attentions = () if output_attentions or self.config.output_attentions else None
cross_encoder_attentions = () if output_attentions or self.config.output_attentions else None
visual_feats = self.visn_fc([visual_feats, visual_pos], training=training)
# Run language layers
for layer_module in self.layer:
l_outputs = layer_module(lang_feats, lang_attention_mask, output_attentions, training=training)
lang_feats = l_outputs[0]
language_hidden_states = language_hidden_states + (lang_feats,)
if language_attentions is not None:
language_attentions = language_attentions + (l_outputs[1],)
# Run relational layers
for layer_module in self.r_layers:
v_outputs = layer_module(
visual_feats,
visual_attention_mask,
output_attentions,
training=training,
)
visual_feats = v_outputs[0]
vision_hidden_states = vision_hidden_states + (visual_feats,)
if vision_attentions is not None:
vision_attentions = vision_attentions + (v_outputs[1],)
# Run cross-modality layers
for layer_module in self.x_layers:
x_outputs = layer_module(
lang_feats,
lang_attention_mask,
visual_feats,
visual_attention_mask,
output_attentions,
training=training,
)
lang_feats, visual_feats = x_outputs[:2]
vision_hidden_states = vision_hidden_states + (visual_feats,)
language_hidden_states = language_hidden_states + (lang_feats,)
if cross_encoder_attentions is not None:
cross_encoder_attentions = cross_encoder_attentions + (x_outputs[2],)
visual_encoder_outputs = (
vision_hidden_states,
vision_attentions if output_attentions else None,
)
lang_encoder_outputs = (
language_hidden_states,
language_attentions if output_attentions else None,
)
return (
visual_encoder_outputs,
lang_encoder_outputs,
cross_encoder_attentions if output_attentions else None,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "visn_fc", None) is not None:
with tf.name_scope(self.visn_fc.name):
self.visn_fc.build(None)
if getattr(self, "layer", None) is not None:
for layer in self.layer:
with tf.name_scope(layer.name):
layer.build(None)
if getattr(self, "x_layers", None) is not None:
for layer in self.x_layers:
with tf.name_scope(layer.name):
layer.build(None)
if getattr(self, "r_layers", None) is not None:
for layer in self.r_layers:
with tf.name_scope(layer.name):
layer.build(None)
|
class_definition
| 30,281 | 34,609 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,776 |
class TFLxmertMainLayer(keras.layers.Layer):
config_class = LxmertConfig
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.config = config
self.num_l_layers = config.l_layers
self.num_x_layers = config.x_layers
self.num_r_layers = config.r_layers
self.initializer_range = config.initializer_range
self.output_attentions = config.output_attentions
self.output_hidden_states = config.output_hidden_states
self.return_dict = config.use_return_dict
self.embeddings = TFLxmertEmbeddings(config, name="embeddings")
self.encoder = TFLxmertEncoder(config, name="encoder")
self.pooler = TFLxmertPooler(config, name="pooler")
self.config = config
def get_input_embeddings(self):
return self.embeddings
def set_input_embeddings(self, value):
self.embeddings.weight = value
self.embeddings.vocab_size = shape_list(value)[0]
def _prune_heads(self, heads_to_prune):
raise NotImplementedError
@unpack_inputs
def call(
self,
input_ids=None,
visual_feats=None,
visual_pos=None,
attention_mask=None,
visual_attention_mask=None,
token_type_ids=None,
inputs_embeds=None,
output_attentions=None,
output_hidden_states=None,
return_dict=None,
training=False,
):
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
input_shape = shape_list(input_ids)
elif inputs_embeds is not None:
input_shape = shape_list(inputs_embeds)[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if visual_pos is None or visual_feats is None:
raise ValueError("visual_feats and visual_pos cannot be `None` in LXMERT's `call` method.")
if attention_mask is None:
attention_mask = tf.fill(input_shape, 1)
if token_type_ids is None:
token_type_ids = tf.fill(input_shape, 0)
# Positional Word Embeddings
embedding_output = self.embeddings(input_ids, token_type_ids, inputs_embeds, training)
# We create a 3D attention mask from a 2D tensor mask.
# Sizes are [batch_size, 1, 1, to_seq_length]
# So we can broadcast to [batch_size, num_heads, from_seq_length, to_seq_length]
# this attention mask is more simple than the triangular masking of causal attention
# used in OpenAI GPT, we just need to prepare the broadcast dimension here.
extended_attention_mask = tf.reshape(attention_mask, (input_shape[0], 1, 1, input_shape[1]))
# Since attention_mask is 1.0 for positions we want to attend and 0.0 for
# masked positions, this operation will create a tensor which is 0.0 for
# positions we want to attend and -10000.0 for masked positions.
# Since we are adding it to the raw scores before the softmax, this is
# effectively the same as removing these entirely.
extended_attention_mask = tf.cast(extended_attention_mask, dtype=embedding_output.dtype)
one_cst = tf.constant(1.0, dtype=embedding_output.dtype)
ten_thousand_cst = tf.constant(-10000.0, dtype=embedding_output.dtype)
extended_attention_mask = tf.multiply(tf.subtract(one_cst, extended_attention_mask), ten_thousand_cst)
if visual_attention_mask is not None:
extended_visual_attention_mask = tf.reshape(visual_attention_mask, (input_shape[0], 1, 1, input_shape[1]))
extended_visual_attention_mask = tf.expand_dims(tf.expand_dims(visual_attention_mask, axis=1), axis=1)
extended_visual_attention_mask = tf.cast(extended_visual_attention_mask, dtype=embedding_output.dtype)
extended_visual_attention_mask = tf.multiply(
tf.subtract(one_cst, extended_visual_attention_mask), ten_thousand_cst
)
else:
extended_visual_attention_mask = None
# Run Lxmert encoder
encoder_outputs = self.encoder(
embedding_output,
extended_attention_mask,
visual_feats,
visual_pos,
extended_visual_attention_mask,
output_attentions,
training,
)
visual_encoder_outputs, lang_encoder_outputs = encoder_outputs[:2]
vision_hidden_states = visual_encoder_outputs[0]
language_hidden_states = lang_encoder_outputs[0]
all_attentions = ()
if output_attentions:
language_attentions = lang_encoder_outputs[1]
vision_attentions = visual_encoder_outputs[1]
cross_encoder_attentions = encoder_outputs[2]
all_attentions = (
language_attentions,
vision_attentions,
cross_encoder_attentions,
)
hidden_states = (language_hidden_states, vision_hidden_states) if output_hidden_states else ()
visual_output = vision_hidden_states[-1]
lang_output = language_hidden_states[-1]
pooled_output = self.pooler(lang_output)
if not return_dict:
return (lang_output, visual_output, pooled_output) + hidden_states + all_attentions
return TFLxmertModelOutput(
pooled_output=pooled_output,
language_output=lang_output,
vision_output=visual_output,
language_hidden_states=language_hidden_states if output_hidden_states else None,
vision_hidden_states=vision_hidden_states if output_hidden_states else None,
language_attentions=language_attentions if output_attentions else None,
vision_attentions=vision_attentions if output_attentions else None,
cross_encoder_attentions=cross_encoder_attentions if output_attentions else None,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "embeddings", None) is not None:
with tf.name_scope(self.embeddings.name):
self.embeddings.build(None)
if getattr(self, "encoder", None) is not None:
with tf.name_scope(self.encoder.name):
self.encoder.build(None)
if getattr(self, "pooler", None) is not None:
with tf.name_scope(self.pooler.name):
self.pooler.build(None)
|
class_definition
| 34,632 | 41,226 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,777 |
class TFLxmertPreTrainedModel(TFPreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = LxmertConfig
base_model_prefix = "lxmert"
@property
def dummy_inputs(self):
"""
Dummy inputs to build the network.
Returns:
tf.Tensor with dummy inputs
"""
batch_size = 2
num_visual_features = 10
input_ids = tf.constant([[3, 5, 6], [2, 3, 4]], dtype=tf.int32)
visual_feats = tf.random.uniform((batch_size, num_visual_features, self.config.visual_feat_dim))
visual_pos = tf.random.uniform((batch_size, num_visual_features, 4))
return {
"input_ids": input_ids,
"visual_feats": visual_feats,
"visual_pos": visual_pos,
}
@property
def input_signature(self):
return {
"input_ids": tf.TensorSpec((None, None), tf.int32, name="input_ids"),
"attention_mask": tf.TensorSpec((None, None), tf.int32, name="attention_mask"),
"visual_feats": tf.TensorSpec((None, None, self.config.visual_feat_dim), tf.float32, name="visual_feats"),
"visual_pos": tf.TensorSpec((None, None, 4), tf.float32, name="visual_pos"),
"visual_attention_mask": tf.TensorSpec((None, None), tf.int32, name="visual_attention_mask"),
"token_type_ids": tf.TensorSpec((None, None), tf.int32, name="token_type_ids"),
}
|
class_definition
| 41,229 | 42,764 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,778 |
class TFLxmertModel(TFLxmertPreTrainedModel):
def __init__(self, config, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.lxmert = TFLxmertMainLayer(config, name="lxmert")
@unpack_inputs
@add_start_docstrings_to_model_forward(LXMERT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFLxmertModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
visual_feats: tf.Tensor | None = None,
visual_pos: tf.Tensor | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
visual_attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: bool = False,
) -> Union[Tuple, TFLxmertModelOutput]:
outputs = self.lxmert(
input_ids,
visual_feats,
visual_pos,
attention_mask,
visual_attention_mask,
token_type_ids,
inputs_embeds,
output_attentions,
output_hidden_states,
return_dict,
training,
)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "lxmert", None) is not None:
with tf.name_scope(self.lxmert.name):
self.lxmert.build(None)
|
class_definition
| 49,461 | 51,186 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,779 |
class TFLxmertPooler(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
activation="tanh",
name="dense",
)
self.config = config
def call(self, hidden_states):
# We "pool" the model by simply taking the hidden state corresponding
# to the first token.
first_token_tensor = hidden_states[:, 0]
pooled_output = self.dense(first_token_tensor)
return pooled_output
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
|
class_definition
| 51,189 | 52,109 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,780 |
class TFLxmertPredictionHeadTransform(keras.layers.Layer):
def __init__(self, config: LxmertConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
units=config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
if isinstance(config.hidden_act, str):
self.transform_act_fn = get_tf_activation(config.hidden_act)
else:
self.transform_act_fn = config.hidden_act
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.transform_act_fn(hidden_states)
hidden_states = self.LayerNorm(inputs=hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
|
class_definition
| 52,216 | 53,617 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,781 |
class TFLxmertLMPredictionHead(keras.layers.Layer):
def __init__(self, config: LxmertConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.config = config
self.hidden_size = config.hidden_size
self.transform = TFLxmertPredictionHeadTransform(config, name="transform")
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.input_embeddings = input_embeddings
def build(self, input_shape=None):
self.bias = self.add_weight(shape=(self.config.vocab_size,), initializer="zeros", trainable=True, name="bias")
if self.built:
return
self.built = True
if getattr(self, "transform", None) is not None:
with tf.name_scope(self.transform.name):
self.transform.build(None)
def get_output_embeddings(self) -> keras.layers.Layer:
return self.input_embeddings
def set_output_embeddings(self, value: tf.Variable):
self.input_embeddings.weight = value
self.input_embeddings.vocab_size = shape_list(value)[0]
def get_bias(self) -> Dict[str, tf.Variable]:
return {"bias": self.bias}
def set_bias(self, value: tf.Variable):
self.bias = value["bias"]
self.config.vocab_size = shape_list(value["bias"])[0]
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.transform(hidden_states=hidden_states)
seq_length = shape_list(hidden_states)[1]
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.hidden_size])
hidden_states = tf.matmul(a=hidden_states, b=self.input_embeddings.weight, transpose_b=True)
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.config.vocab_size])
hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias)
return hidden_states
|
class_definition
| 53,717 | 55,682 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,782 |
class TFLxmertMLMHead(keras.layers.Layer):
def __init__(self, config: LxmertConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.predictions = TFLxmertLMPredictionHead(config, input_embeddings, name="predictions")
def call(self, sequence_output: tf.Tensor) -> tf.Tensor:
prediction_scores = self.predictions(hidden_states=sequence_output)
return prediction_scores
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "predictions", None) is not None:
with tf.name_scope(self.predictions.name):
self.predictions.build(None)
|
class_definition
| 55,773 | 56,482 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,783 |
class TFLxmertPreTrainingHeads(keras.layers.Layer):
def __init__(self, config, input_embeddings, **kwargs):
super().__init__(**kwargs)
self.predictions = TFLxmertLMPredictionHead(config, input_embeddings, name="predictions")
self.seq_relationship = keras.layers.Dense(
2,
kernel_initializer=get_initializer(config.initializer_range),
name="seq_relationship",
)
self.config = config
def call(self, sequence_output, pooled_output):
prediction_scores = self.predictions(sequence_output)
seq_relationship_score = self.seq_relationship(pooled_output)
return prediction_scores, seq_relationship_score
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "predictions", None) is not None:
with tf.name_scope(self.predictions.name):
self.predictions.build(None)
if getattr(self, "seq_relationship", None) is not None:
with tf.name_scope(self.seq_relationship.name):
self.seq_relationship.build([None, None, self.config.hidden_size])
|
class_definition
| 56,485 | 57,663 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,784 |
class TFLxmertVisualAnswerHead(keras.layers.Layer):
def __init__(self, config, num_labels, **kwargs):
super().__init__(**kwargs)
hid_dim = config.hidden_size
self.dense = keras.layers.Dense(
hid_dim * 2,
kernel_initializer=get_initializer(config.initializer_range),
name="logit_fc_._0",
)
self.activation = get_tf_activation("gelu")
self.layer_norm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="logit_fc_._2")
self.dense_1 = keras.layers.Dense(
num_labels,
kernel_initializer=get_initializer(config.initializer_range),
name="logit_fc_._3",
)
self.hid_dim = hid_dim
def call(self, hidden_states):
hidden_states = self.dense(hidden_states)
hidden_states = self.activation(hidden_states)
hidden_states = self.layer_norm(hidden_states)
hidden_states = self.dense_1(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.hid_dim])
if getattr(self, "layer_norm", None) is not None:
with tf.name_scope(self.layer_norm.name):
self.layer_norm.build([None, self.hid_dim * 2])
if getattr(self, "dense_1", None) is not None:
with tf.name_scope(self.dense_1.name):
self.dense_1.build([None, None, self.hid_dim * 2])
|
class_definition
| 57,666 | 59,301 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,785 |
class TFLxmertVisualObjHead(keras.layers.Layer):
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.transform = TFLxmertPredictionHeadTransform(config, name="transform")
# Decide the use of visual losses
visual_losses = {}
if config.visual_obj_loss:
visual_losses["obj"] = {"shape": (-1,), "num": config.num_object_labels}
if config.visual_attr_loss:
visual_losses["attr"] = {"shape": (-1,), "num": config.num_attr_labels}
if config.visual_feat_loss:
visual_losses["feat"] = {"shape": (-1, 2048), "num": config.visual_feat_dim}
self.visual_losses = visual_losses
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.decoder_dict = {
key: keras.layers.Dense(
self.visual_losses[key]["num"],
kernel_initializer=get_initializer(config.initializer_range),
name=f"decoder_dict.{key}",
)
for key in self.visual_losses
}
self.config = config
def call(self, hidden_states):
hidden_states = self.transform(hidden_states)
output = {}
for key in self.visual_losses:
output[key] = self.decoder_dict[key](hidden_states)
return output
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "transform", None) is not None:
with tf.name_scope(self.transform.name):
self.transform.build(None)
if getattr(self, "decoder_dict", None) is not None:
for layer in self.decoder_dict.values():
with tf.name_scope(layer.name):
layer.build([None, None, self.config.hidden_size])
|
class_definition
| 59,304 | 61,177 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,786 |
class TFLxmertForPreTraining(TFLxmertPreTrainedModel):
def __init__(self, config, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.config = config
self.num_qa_labels = config.num_qa_labels
self.visual_loss_normalizer = config.visual_loss_normalizer
# Use of pretraining tasks
self.task_mask_lm = config.task_mask_lm
self.task_obj_predict = config.task_obj_predict
self.task_matched = config.task_matched
self.task_qa = config.task_qa
# Lxmert backbone
self.lxmert = TFLxmertMainLayer(config, name="lxmert")
# Pre-training heads
self.cls = TFLxmertPreTrainingHeads(config, self.lxmert.embeddings, name="cls")
if self.task_obj_predict:
self.obj_predict_head = TFLxmertVisualObjHead(config, name="obj_predict_head")
if self.task_qa:
self.answer_head = TFLxmertVisualAnswerHead(config, self.num_qa_labels, name="answer_head")
# Loss functions
self.loss_fcts = {
"l2": keras.losses.Huber(delta=1.0, name="huber_loss"),
"visn_ce": keras.losses.SparseCategoricalCrossentropy(from_logits=True),
"ce": keras.losses.SparseCategoricalCrossentropy(from_logits=True),
}
visual_losses = {}
if config.visual_obj_loss:
visual_losses["obj"] = {
"shape": (-1,),
"num": config.num_object_labels,
"loss": "visn_ce",
}
if config.visual_attr_loss:
visual_losses["attr"] = {
"shape": (-1,),
"num": config.num_attr_labels,
"loss": "visn_ce",
}
if config.visual_feat_loss:
visual_losses["feat"] = {
"shape": (-1, config.visual_feat_dim),
"num": config.visual_feat_dim,
"loss": "l2",
}
self.visual_losses = visual_losses
@property
def dummy_inputs(self):
"""
Dummy inputs to build the network.
Returns:
tf.Tensor with dummy inputs
"""
batch_size = 2
num_visual_features = 10
input_ids = tf.constant([[3, 5, 6], [2, 3, 4]], dtype=tf.int32)
visual_feats = tf.random.uniform((batch_size, num_visual_features, self.config.visual_feat_dim))
visual_pos = tf.random.uniform((batch_size, num_visual_features, 4))
if self.config.task_obj_predict:
obj_labels = {}
if self.config.visual_attr_loss and self.config.task_obj_predict:
obj_labels["attr"] = (
tf.ones([batch_size, num_visual_features]),
tf.ones([batch_size, num_visual_features]),
)
if self.config.visual_feat_loss and self.config.task_obj_predict:
obj_labels["feat"] = (
tf.ones([batch_size, num_visual_features, self.config.visual_feat_dim]),
tf.ones([batch_size, num_visual_features]),
)
if self.config.visual_obj_loss and self.config.task_obj_predict:
obj_labels["obj"] = (
tf.ones([batch_size, num_visual_features]),
tf.ones([batch_size, num_visual_features]),
)
return {
**{
"input_ids": input_ids,
"visual_feats": visual_feats,
"visual_pos": visual_pos,
},
**({"obj_labels": obj_labels} if self.config.task_obj_predict else {}),
}
def get_lm_head(self):
return self.cls.predictions
def get_prefix_bias_name(self):
warnings.warn("The method get_prefix_bias_name is deprecated. Please use `get_bias` instead.", FutureWarning)
return self.name + "/" + self.cls.name + "/" + self.cls.predictions.name
@unpack_inputs
@add_start_docstrings_to_model_forward(LXMERT_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=TFLxmertForPreTrainingOutput, config_class=_CONFIG_FOR_DOC)
def call(
self,
input_ids: TFModelInputType | None = None,
visual_feats: tf.Tensor | None = None,
visual_pos: tf.Tensor | None = None,
attention_mask: tf.Tensor | None = None,
visual_attention_mask: tf.Tensor | None = None,
token_type_ids: tf.Tensor | None = None,
inputs_embeds: tf.Tensor | None = None,
masked_lm_labels: tf.Tensor | None = None,
obj_labels: Dict[str, Tuple[tf.Tensor, tf.Tensor]] | None = None,
matched_label: tf.Tensor | None = None,
ans: tf.Tensor | None = None,
output_attentions: bool | None = None,
output_hidden_states: bool | None = None,
return_dict: bool | None = None,
training: bool = False,
) -> Tuple[tf.Tensor] | TFLxmertForPreTrainingOutput:
r"""
masked_lm_labels (`tf.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ...,
config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the
loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`
obj_labels (`Dict[Str: Tuple[tf.Tensor, tf.Tensor]]`, *optional*, defaults to `None`):
each key is named after each one of the visual losses and each element of the tuple is of the shape
`(batch_size, num_features)` and `(batch_size, num_features, visual_feature_dim)` for each the label id and
the label score respectively
matched_label (`tf.Tensor` of shape `(batch_size,)`, *optional*):
Labels for computing the whether or not the text input matches the image (classification) loss. Input
should be a sequence pair (see `input_ids` docstring) Indices should be in `[0, 1]`:
- 0 indicates that the sentence does not match the image,
- 1 indicates that the sentence does match the image.
ans (`tf.Tensor` of shape `(batch_size)`, *optional*, defaults to `None`):
a one hot representation hof the correct answer *optional*
Returns:
"""
lxmert_output = self.lxmert(
input_ids,
visual_feats,
visual_pos,
attention_mask,
visual_attention_mask,
token_type_ids,
inputs_embeds,
output_attentions,
output_hidden_states,
return_dict,
training,
)
lang_output, visual_output, pooled_output = (
lxmert_output[0],
lxmert_output[1],
lxmert_output[2],
)
lang_prediction_scores, cross_relationship_score = self.cls(lang_output, pooled_output)
if self.task_qa:
answer_score = self.answer_head(pooled_output)
else:
answer_score = pooled_output[0][0]
total_loss = (
None
if (masked_lm_labels is None and matched_label is None and obj_labels is None and ans is None)
else tf.constant(0.0)
)
losses = ()
if masked_lm_labels is not None and self.task_mask_lm:
masked_lm_loss = self.loss_fcts["ce"](
tf.reshape(masked_lm_labels, [-1]),
tf.reshape(lang_prediction_scores, [-1, self.config.vocab_size]),
)
total_loss += masked_lm_loss
losses += (masked_lm_loss,)
if matched_label is not None and self.task_matched:
matched_loss = self.loss_fcts["ce"](
tf.reshape(matched_label, [-1]),
tf.reshape(cross_relationship_score, [-1, 2]),
)
total_loss += matched_loss
losses += (matched_loss,)
if obj_labels is not None and self.task_obj_predict:
total_visn_loss = 0.0
visn_prediction_scores_dict = self.obj_predict_head(visual_output)
for key, key_info in self.visual_losses.items():
label, mask_conf = obj_labels[key]
output_dim = key_info["num"]
loss_fct_name = key_info["loss"]
label_shape = key_info["shape"]
weight = self.visual_loss_normalizer
visn_loss_fct = self.loss_fcts[loss_fct_name]
visn_prediction_scores = visn_prediction_scores_dict[key]
visn_loss = visn_loss_fct(
tf.reshape(label, label_shape),
tf.reshape(visn_prediction_scores, [-1, output_dim]),
)
if visn_loss.ndim > 1: # Regression Losses
visn_loss = tf.reduce_mean(visn_loss)
visn_loss = tf.reduce_mean(visn_loss * tf.cast(tf.reshape(mask_conf, [-1]), visn_loss.dtype)) * weight
total_visn_loss += visn_loss
losses += (visn_loss,)
total_loss += total_visn_loss
if ans is not None and self.task_qa:
answer_loss = self.loss_fcts["ce"](
tf.reshape(ans, [-1]), tf.reshape(answer_score, [-1, self.num_qa_labels])
)
# exclude "*2" here to match the effect of QA losses.
# Previous: (loss *0) for 6 epochs, (loss *2) for 6 epochs. (Used 10 instead of 6 in EMNLP paper)
# Now : (loss *1) for 12 epochs
#
# * 2 # Multiply by 2 because > half of the data will not have label
total_loss += answer_loss
losses += (answer_loss,)
# return total_loss, tf.stack(losses)[tf.new_axis, ...], answer_score.detach()
if not return_dict:
output = (
lang_prediction_scores,
cross_relationship_score,
answer_score,
) + lxmert_output[3:]
return ((total_loss,) + output) if total_loss is not None else output
return TFLxmertForPreTrainingOutput(
loss=total_loss,
prediction_logits=lang_prediction_scores,
cross_relationship_score=cross_relationship_score,
question_answering_score=answer_score,
language_hidden_states=lxmert_output.language_hidden_states,
vision_hidden_states=lxmert_output.vision_hidden_states,
language_attentions=lxmert_output.language_attentions,
vision_attentions=lxmert_output.vision_attentions,
cross_encoder_attentions=lxmert_output.cross_encoder_attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "lxmert", None) is not None:
with tf.name_scope(self.lxmert.name):
self.lxmert.build(None)
if getattr(self, "cls", None) is not None:
with tf.name_scope(self.cls.name):
self.cls.build(None)
if getattr(self, "obj_predict_head", None) is not None:
with tf.name_scope(self.obj_predict_head.name):
self.obj_predict_head.build(None)
if getattr(self, "answer_head", None) is not None:
with tf.name_scope(self.answer_head.name):
self.answer_head.build(None)
|
class_definition
| 61,286 | 72,617 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/modeling_tf_lxmert.py
| null | 4,787 |
class LxmertTokenizer(PreTrainedTokenizer):
r"""
Construct a Lxmert tokenizer. Based on WordPiece.
This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to
this superclass for more information regarding those methods.
Args:
vocab_file (`str`):
File containing the vocabulary.
do_lower_case (`bool`, *optional*, defaults to `True`):
Whether or not to lowercase the input when tokenizing.
do_basic_tokenize (`bool`, *optional*, defaults to `True`):
Whether or not to do basic tokenization before WordPiece.
never_split (`Iterable`, *optional*):
Collection of tokens which will never be split during tokenization. Only has an effect when
`do_basic_tokenize=True`
unk_token (`str`, *optional*, defaults to `"[UNK]"`):
The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this
token instead.
sep_token (`str`, *optional*, defaults to `"[SEP]"`):
The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for
sequence classification or for a text and a question for question answering. It is also used as the last
token of a sequence built with special tokens.
pad_token (`str`, *optional*, defaults to `"[PAD]"`):
The token used for padding, for example when batching sequences of different lengths.
cls_token (`str`, *optional*, defaults to `"[CLS]"`):
The classifier token which is used when doing sequence classification (classification of the whole sequence
instead of per-token classification). It is the first token of the sequence when built with special tokens.
mask_token (`str`, *optional*, defaults to `"[MASK]"`):
The token used for masking values. This is the token used when training this model with masked language
modeling. This is the token which the model will try to predict.
tokenize_chinese_chars (`bool`, *optional*, defaults to `True`):
Whether or not to tokenize Chinese characters.
This should likely be deactivated for Japanese (see this
[issue](https://github.com/huggingface/transformers/issues/328)).
strip_accents (`bool`, *optional*):
Whether or not to strip all accents. If this option is not specified, then it will be determined by the
value for `lowercase` (as in the original Lxmert).
clean_up_tokenization_spaces (`bool`, *optional*, defaults to `True`):
Whether or not to cleanup spaces after decoding, cleanup consists in removing potential artifacts like
extra spaces.
"""
vocab_files_names = VOCAB_FILES_NAMES
def __init__(
self,
vocab_file,
do_lower_case=True,
do_basic_tokenize=True,
never_split=None,
unk_token="[UNK]",
sep_token="[SEP]",
pad_token="[PAD]",
cls_token="[CLS]",
mask_token="[MASK]",
tokenize_chinese_chars=True,
strip_accents=None,
clean_up_tokenization_spaces=True,
**kwargs,
):
if not os.path.isfile(vocab_file):
raise ValueError(
f"Can't find a vocabulary file at path '{vocab_file}'. To load the vocabulary from a Google pretrained"
" model use `tokenizer = LxmertTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`"
)
self.vocab = load_vocab(vocab_file)
self.ids_to_tokens = collections.OrderedDict([(ids, tok) for tok, ids in self.vocab.items()])
self.do_basic_tokenize = do_basic_tokenize
if do_basic_tokenize:
self.basic_tokenizer = BasicTokenizer(
do_lower_case=do_lower_case,
never_split=never_split,
tokenize_chinese_chars=tokenize_chinese_chars,
strip_accents=strip_accents,
)
self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab, unk_token=str(unk_token))
super().__init__(
do_lower_case=do_lower_case,
do_basic_tokenize=do_basic_tokenize,
never_split=never_split,
unk_token=unk_token,
sep_token=sep_token,
pad_token=pad_token,
cls_token=cls_token,
mask_token=mask_token,
tokenize_chinese_chars=tokenize_chinese_chars,
strip_accents=strip_accents,
clean_up_tokenization_spaces=clean_up_tokenization_spaces,
**kwargs,
)
@property
def do_lower_case(self):
return self.basic_tokenizer.do_lower_case
@property
def vocab_size(self):
return len(self.vocab)
def get_vocab(self):
return dict(self.vocab, **self.added_tokens_encoder)
def _tokenize(self, text, split_special_tokens=False):
split_tokens = []
if self.do_basic_tokenize:
for token in self.basic_tokenizer.tokenize(
text, never_split=self.all_special_tokens if not split_special_tokens else None
):
# If the token is part of the never_split set
if token in self.basic_tokenizer.never_split:
split_tokens.append(token)
else:
split_tokens += self.wordpiece_tokenizer.tokenize(token)
else:
split_tokens = self.wordpiece_tokenizer.tokenize(text)
return split_tokens
def _convert_token_to_id(self, token):
"""Converts a token (str) in an id using the vocab."""
return self.vocab.get(token, self.vocab.get(self.unk_token))
def _convert_id_to_token(self, index):
"""Converts an index (integer) in a token (str) using the vocab."""
return self.ids_to_tokens.get(index, self.unk_token)
def convert_tokens_to_string(self, tokens):
"""Converts a sequence of tokens (string) in a single string."""
out_string = " ".join(tokens).replace(" ##", "").strip()
return out_string
def build_inputs_with_special_tokens(
self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None
) -> List[int]:
"""
Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and
adding special tokens. A Lxmert sequence has the following format:
- single sequence: `[CLS] X [SEP]`
- pair of sequences: `[CLS] A [SEP] B [SEP]`
Args:
token_ids_0 (`List[int]`):
List of IDs to which the special tokens will be added.
token_ids_1 (`List[int]`, *optional*):
Optional second list of IDs for sequence pairs.
Returns:
`List[int]`: List of [input IDs](../glossary#input-ids) with the appropriate special tokens.
"""
if token_ids_1 is None:
return [self.cls_token_id] + token_ids_0 + [self.sep_token_id]
cls = [self.cls_token_id]
sep = [self.sep_token_id]
return cls + token_ids_0 + sep + token_ids_1 + sep
def get_special_tokens_mask(
self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None, already_has_special_tokens: bool = False
) -> List[int]:
"""
Retrieve sequence ids from a token list that has no special tokens added. This method is called when adding
special tokens using the tokenizer `prepare_for_model` method.
Args:
token_ids_0 (`List[int]`):
List of IDs.
token_ids_1 (`List[int]`, *optional*):
Optional second list of IDs for sequence pairs.
already_has_special_tokens (`bool`, *optional*, defaults to `False`):
Whether or not the token list is already formatted with special tokens for the model.
Returns:
`List[int]`: A list of integers in the range [0, 1]: 1 for a special token, 0 for a sequence token.
"""
if already_has_special_tokens:
return super().get_special_tokens_mask(
token_ids_0=token_ids_0, token_ids_1=token_ids_1, already_has_special_tokens=True
)
if token_ids_1 is not None:
return [1] + ([0] * len(token_ids_0)) + [1] + ([0] * len(token_ids_1)) + [1]
return [1] + ([0] * len(token_ids_0)) + [1]
def create_token_type_ids_from_sequences(
self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None
) -> List[int]:
"""
Create a mask from the two sequences passed to be used in a sequence-pair classification task. A Lxmert sequence
pair mask has the following format:
```
0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1
| first sequence | second sequence |
```
If `token_ids_1` is `None`, this method only returns the first portion of the mask (0s).
Args:
token_ids_0 (`List[int]`):
List of IDs.
token_ids_1 (`List[int]`, *optional*):
Optional second list of IDs for sequence pairs.
Returns:
`List[int]`: List of [token type IDs](../glossary#token-type-ids) according to the given sequence(s).
"""
sep = [self.sep_token_id]
cls = [self.cls_token_id]
if token_ids_1 is None:
return len(cls + token_ids_0 + sep) * [0]
return len(cls + token_ids_0 + sep) * [0] + len(token_ids_1 + sep) * [1]
def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]:
index = 0
if os.path.isdir(save_directory):
vocab_file = os.path.join(
save_directory, (filename_prefix + "-" if filename_prefix else "") + VOCAB_FILES_NAMES["vocab_file"]
)
else:
vocab_file = (filename_prefix + "-" if filename_prefix else "") + save_directory
with open(vocab_file, "w", encoding="utf-8") as writer:
for token, token_index in sorted(self.vocab.items(), key=lambda kv: kv[1]):
if index != token_index:
logger.warning(
f"Saving vocabulary to {vocab_file}: vocabulary indices are not consecutive."
" Please check that the vocabulary is not corrupted!"
)
index = token_index
writer.write(token + "\n")
index += 1
return (vocab_file,)
|
class_definition
| 1,824 | 12,493 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/tokenization_lxmert.py
| null | 4,788 |
class BasicTokenizer:
"""
Constructs a BasicTokenizer that will run basic tokenization (punctuation splitting, lower casing, etc.).
Args:
do_lower_case (`bool`, *optional*, defaults to `True`):
Whether or not to lowercase the input when tokenizing.
never_split (`Iterable`, *optional*):
Collection of tokens which will never be split during tokenization. Only has an effect when
`do_basic_tokenize=True`
tokenize_chinese_chars (`bool`, *optional*, defaults to `True`):
Whether or not to tokenize Chinese characters.
This should likely be deactivated for Japanese (see this
[issue](https://github.com/huggingface/transformers/issues/328)).
strip_accents (`bool`, *optional*):
Whether or not to strip all accents. If this option is not specified, then it will be determined by the
value for `lowercase` (as in the original BERT).
do_split_on_punc (`bool`, *optional*, defaults to `True`):
In some instances we want to skip the basic punctuation splitting so that later tokenization can capture
the full context of the words, such as contractions.
"""
def __init__(
self,
do_lower_case=True,
never_split=None,
tokenize_chinese_chars=True,
strip_accents=None,
do_split_on_punc=True,
):
if never_split is None:
never_split = []
self.do_lower_case = do_lower_case
self.never_split = set(never_split)
self.tokenize_chinese_chars = tokenize_chinese_chars
self.strip_accents = strip_accents
self.do_split_on_punc = do_split_on_punc
def tokenize(self, text, never_split=None):
"""
Basic Tokenization of a piece of text. For sub-word tokenization, see WordPieceTokenizer.
Args:
never_split (`List[str]`, *optional*)
Kept for backward compatibility purposes. Now implemented directly at the base class level (see
[`PreTrainedTokenizer.tokenize`]) List of token not to split.
"""
# union() returns a new set by concatenating the two sets.
never_split = self.never_split.union(set(never_split)) if never_split else self.never_split
text = self._clean_text(text)
# This was added on November 1st, 2018 for the multilingual and Chinese
# models. This is also applied to the English models now, but it doesn't
# matter since the English models were not trained on any Chinese data
# and generally don't have any Chinese data in them (there are Chinese
# characters in the vocabulary because Wikipedia does have some Chinese
# words in the English Wikipedia.).
if self.tokenize_chinese_chars:
text = self._tokenize_chinese_chars(text)
# prevents treating the same character with different unicode codepoints as different characters
unicode_normalized_text = unicodedata.normalize("NFC", text)
orig_tokens = whitespace_tokenize(unicode_normalized_text)
split_tokens = []
for token in orig_tokens:
if token not in never_split:
if self.do_lower_case:
token = token.lower()
if self.strip_accents is not False:
token = self._run_strip_accents(token)
elif self.strip_accents:
token = self._run_strip_accents(token)
split_tokens.extend(self._run_split_on_punc(token, never_split))
output_tokens = whitespace_tokenize(" ".join(split_tokens))
return output_tokens
def _run_strip_accents(self, text):
"""Strips accents from a piece of text."""
text = unicodedata.normalize("NFD", text)
output = []
for char in text:
cat = unicodedata.category(char)
if cat == "Mn":
continue
output.append(char)
return "".join(output)
def _run_split_on_punc(self, text, never_split=None):
"""Splits punctuation on a piece of text."""
if not self.do_split_on_punc or (never_split is not None and text in never_split):
return [text]
chars = list(text)
i = 0
start_new_word = True
output = []
while i < len(chars):
char = chars[i]
if _is_punctuation(char):
output.append([char])
start_new_word = True
else:
if start_new_word:
output.append([])
start_new_word = False
output[-1].append(char)
i += 1
return ["".join(x) for x in output]
def _tokenize_chinese_chars(self, text):
"""Adds whitespace around any CJK character."""
output = []
for char in text:
cp = ord(char)
if self._is_chinese_char(cp):
output.append(" ")
output.append(char)
output.append(" ")
else:
output.append(char)
return "".join(output)
def _is_chinese_char(self, cp):
"""Checks whether CP is the codepoint of a CJK character."""
# This defines a "chinese character" as anything in the CJK Unicode block:
# https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block)
#
# Note that the CJK Unicode block is NOT all Japanese and Korean characters,
# despite its name. The modern Korean Hangul alphabet is a different block,
# as is Japanese Hiragana and Katakana. Those alphabets are used to write
# space-separated words, so they are not treated specially and handled
# like the all of the other languages.
if (
(cp >= 0x4E00 and cp <= 0x9FFF)
or (cp >= 0x3400 and cp <= 0x4DBF) #
or (cp >= 0x20000 and cp <= 0x2A6DF) #
or (cp >= 0x2A700 and cp <= 0x2B73F) #
or (cp >= 0x2B740 and cp <= 0x2B81F) #
or (cp >= 0x2B820 and cp <= 0x2CEAF) #
or (cp >= 0xF900 and cp <= 0xFAFF)
or (cp >= 0x2F800 and cp <= 0x2FA1F) #
): #
return True
return False
def _clean_text(self, text):
"""Performs invalid character removal and whitespace cleanup on text."""
output = []
for char in text:
cp = ord(char)
if cp == 0 or cp == 0xFFFD or _is_control(char):
continue
if _is_whitespace(char):
output.append(" ")
else:
output.append(char)
return "".join(output)
|
class_definition
| 12,568 | 19,316 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/tokenization_lxmert.py
| null | 4,789 |
class WordpieceTokenizer:
"""Runs WordPiece tokenization."""
def __init__(self, vocab, unk_token, max_input_chars_per_word=100):
self.vocab = vocab
self.unk_token = unk_token
self.max_input_chars_per_word = max_input_chars_per_word
def tokenize(self, text):
"""
Tokenizes a piece of text into its word pieces. This uses a greedy longest-match-first algorithm to perform
tokenization using the given vocabulary.
For example, `input = "unaffable"` wil return as output `["un", "##aff", "##able"]`.
Args:
text: A single token or whitespace separated tokens. This should have
already been passed through *BasicTokenizer*.
Returns:
A list of wordpiece tokens.
"""
output_tokens = []
for token in whitespace_tokenize(text):
chars = list(token)
if len(chars) > self.max_input_chars_per_word:
output_tokens.append(self.unk_token)
continue
is_bad = False
start = 0
sub_tokens = []
while start < len(chars):
end = len(chars)
cur_substr = None
while start < end:
substr = "".join(chars[start:end])
if start > 0:
substr = "##" + substr
if substr in self.vocab:
cur_substr = substr
break
end -= 1
if cur_substr is None:
is_bad = True
break
sub_tokens.append(cur_substr)
start = end
if is_bad:
output_tokens.append(self.unk_token)
else:
output_tokens.extend(sub_tokens)
return output_tokens
|
class_definition
| 19,395 | 21,283 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/lxmert/tokenization_lxmert.py
| null | 4,790 |
class CLIPTextConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`CLIPTextModel`]. It is used to instantiate a CLIP
text encoder according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a similar configuration to that of the text encoder of the CLIP
[openai/clip-vit-base-patch32](https://huggingface.co/openai/clip-vit-base-patch32) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 49408):
Vocabulary size of the CLIP text model. Defines the number of different tokens that can be represented by
the `inputs_ids` passed when calling [`CLIPModel`].
hidden_size (`int`, *optional*, defaults to 512):
Dimensionality of the encoder layers and the pooler layer.
intermediate_size (`int`, *optional*, defaults to 2048):
Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
projection_dim (`int`, *optional*, defaults to 512):
Dimensionality of text and vision projection layers.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_attention_heads (`int`, *optional*, defaults to 8):
Number of attention heads for each attention layer in the Transformer encoder.
max_position_embeddings (`int`, *optional*, defaults to 77):
The maximum sequence length that this model might ever be used with. Typically set this to something large
just in case (e.g., 512 or 1024 or 2048).
hidden_act (`str` or `function`, *optional*, defaults to `"quick_gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"selu"` and `"gelu_new"` `"quick_gelu"` are supported.
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
initializer_factor (`float`, *optional*, defaults to 1.0):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
pad_token_id (`int`, *optional*, defaults to 1):
Padding token id.
bos_token_id (`int`, *optional*, defaults to 49406):
Beginning of stream token id.
eos_token_id (`int`, *optional*, defaults to 49407):
End of stream token id.
Example:
```python
>>> from transformers import CLIPTextConfig, CLIPTextModel
>>> # Initializing a CLIPTextConfig with openai/clip-vit-base-patch32 style configuration
>>> configuration = CLIPTextConfig()
>>> # Initializing a CLIPTextModel (with random weights) from the openai/clip-vit-base-patch32 style configuration
>>> model = CLIPTextModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "clip_text_model"
base_config_key = "text_config"
def __init__(
self,
vocab_size=49408,
hidden_size=512,
intermediate_size=2048,
projection_dim=512,
num_hidden_layers=12,
num_attention_heads=8,
max_position_embeddings=77,
hidden_act="quick_gelu",
layer_norm_eps=1e-5,
attention_dropout=0.0,
initializer_range=0.02,
initializer_factor=1.0,
# This differs from `CLIPTokenizer`'s default and from openai/clip
# See https://github.com/huggingface/transformers/pull/24773#issuecomment-1632287538
pad_token_id=1,
bos_token_id=49406,
eos_token_id=49407,
**kwargs,
):
super().__init__(pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id, **kwargs)
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.projection_dim = projection_dim
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.max_position_embeddings = max_position_embeddings
self.layer_norm_eps = layer_norm_eps
self.hidden_act = hidden_act
self.initializer_range = initializer_range
self.initializer_factor = initializer_factor
self.attention_dropout = attention_dropout
|
class_definition
| 1,013 | 6,005 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/configuration_clip.py
| null | 4,791 |
class CLIPVisionConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`CLIPVisionModel`]. It is used to instantiate a
CLIP vision encoder according to the specified arguments, defining the model architecture. Instantiating a
configuration with the defaults will yield a similar configuration to that of the vision encoder of the CLIP
[openai/clip-vit-base-patch32](https://huggingface.co/openai/clip-vit-base-patch32) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
intermediate_size (`int`, *optional*, defaults to 3072):
Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
projection_dim (`int`, *optional*, defaults to 512):
Dimensionality of text and vision projection layers.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_attention_heads (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
num_channels (`int`, *optional*, defaults to 3):
The number of input channels.
image_size (`int`, *optional*, defaults to 224):
The size (resolution) of each image.
patch_size (`int`, *optional*, defaults to 32):
The size (resolution) of each patch.
hidden_act (`str` or `function`, *optional*, defaults to `"quick_gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"selu"` and `"gelu_new"` `"quick_gelu"` are supported.
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
initializer_factor (`float`, *optional*, defaults to 1.0):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
Example:
```python
>>> from transformers import CLIPVisionConfig, CLIPVisionModel
>>> # Initializing a CLIPVisionConfig with openai/clip-vit-base-patch32 style configuration
>>> configuration = CLIPVisionConfig()
>>> # Initializing a CLIPVisionModel (with random weights) from the openai/clip-vit-base-patch32 style configuration
>>> model = CLIPVisionModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "clip_vision_model"
base_config_key = "vision_config"
def __init__(
self,
hidden_size=768,
intermediate_size=3072,
projection_dim=512,
num_hidden_layers=12,
num_attention_heads=12,
num_channels=3,
image_size=224,
patch_size=32,
hidden_act="quick_gelu",
layer_norm_eps=1e-5,
attention_dropout=0.0,
initializer_range=0.02,
initializer_factor=1.0,
**kwargs,
):
super().__init__(**kwargs)
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.projection_dim = projection_dim
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.num_channels = num_channels
self.patch_size = patch_size
self.image_size = image_size
self.initializer_range = initializer_range
self.initializer_factor = initializer_factor
self.attention_dropout = attention_dropout
self.layer_norm_eps = layer_norm_eps
self.hidden_act = hidden_act
|
class_definition
| 6,008 | 10,261 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/configuration_clip.py
| null | 4,792 |
class CLIPConfig(PretrainedConfig):
r"""
[`CLIPConfig`] is the configuration class to store the configuration of a [`CLIPModel`]. It is used to instantiate
a CLIP model according to the specified arguments, defining the text model and vision model configs. Instantiating
a configuration with the defaults will yield a similar configuration to that of the CLIP
[openai/clip-vit-base-patch32](https://huggingface.co/openai/clip-vit-base-patch32) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
text_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`CLIPTextConfig`].
vision_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`CLIPVisionConfig`].
projection_dim (`int`, *optional*, defaults to 512):
Dimensionality of text and vision projection layers.
logit_scale_init_value (`float`, *optional*, defaults to 2.6592):
The initial value of the *logit_scale* parameter. Default is used as per the original CLIP implementation.
kwargs (*optional*):
Dictionary of keyword arguments.
Example:
```python
>>> from transformers import CLIPConfig, CLIPModel
>>> # Initializing a CLIPConfig with openai/clip-vit-base-patch32 style configuration
>>> configuration = CLIPConfig()
>>> # Initializing a CLIPModel (with random weights) from the openai/clip-vit-base-patch32 style configuration
>>> model = CLIPModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
>>> # We can also initialize a CLIPConfig from a CLIPTextConfig and a CLIPVisionConfig
>>> from transformers import CLIPTextConfig, CLIPVisionConfig
>>> # Initializing a CLIPText and CLIPVision configuration
>>> config_text = CLIPTextConfig()
>>> config_vision = CLIPVisionConfig()
>>> config = CLIPConfig.from_text_vision_configs(config_text, config_vision)
```"""
model_type = "clip"
sub_configs = {"text_config": CLIPTextConfig, "vision_config": CLIPVisionConfig}
def __init__(
self, text_config=None, vision_config=None, projection_dim=512, logit_scale_init_value=2.6592, **kwargs
):
# If `_config_dict` exist, we use them for the backward compatibility.
# We pop out these 2 attributes before calling `super().__init__` to avoid them being saved (which causes a lot
# of confusion!).
text_config_dict = kwargs.pop("text_config_dict", None)
vision_config_dict = kwargs.pop("vision_config_dict", None)
super().__init__(**kwargs)
# Instead of simply assigning `[text|vision]_config_dict` to `[text|vision]_config`, we use the values in
# `[text|vision]_config_dict` to update the values in `[text|vision]_config`. The values should be same in most
# cases, but we don't want to break anything regarding `_config_dict` that existed before commit `8827e1b2`.
if text_config_dict is not None:
if text_config is None:
text_config = {}
# This is the complete result when using `text_config_dict`.
_text_config_dict = CLIPTextConfig(**text_config_dict).to_dict()
# Give a warning if the values exist in both `_text_config_dict` and `text_config` but being different.
for key, value in _text_config_dict.items():
if key in text_config and value != text_config[key] and key not in ["transformers_version"]:
# If specified in `text_config_dict`
if key in text_config_dict:
message = (
f"`{key}` is found in both `text_config_dict` and `text_config` but with different values. "
f'The value `text_config_dict["{key}"]` will be used instead.'
)
# If inferred from default argument values (just to be super careful)
else:
message = (
f"`text_config_dict` is provided which will be used to initialize `CLIPTextConfig`. The "
f'value `text_config["{key}"]` will be overridden.'
)
logger.info(message)
# Update all values in `text_config` with the ones in `_text_config_dict`.
text_config.update(_text_config_dict)
if vision_config_dict is not None:
if vision_config is None:
vision_config = {}
# This is the complete result when using `vision_config_dict`.
_vision_config_dict = CLIPVisionConfig(**vision_config_dict).to_dict()
# convert keys to string instead of integer
if "id2label" in _vision_config_dict:
_vision_config_dict["id2label"] = {
str(key): value for key, value in _vision_config_dict["id2label"].items()
}
# Give a warning if the values exist in both `_vision_config_dict` and `vision_config` but being different.
for key, value in _vision_config_dict.items():
if key in vision_config and value != vision_config[key] and key not in ["transformers_version"]:
# If specified in `vision_config_dict`
if key in vision_config_dict:
message = (
f"`{key}` is found in both `vision_config_dict` and `vision_config` but with different "
f'values. The value `vision_config_dict["{key}"]` will be used instead.'
)
# If inferred from default argument values (just to be super careful)
else:
message = (
f"`vision_config_dict` is provided which will be used to initialize `CLIPVisionConfig`. "
f'The value `vision_config["{key}"]` will be overridden.'
)
logger.info(message)
# Update all values in `vision_config` with the ones in `_vision_config_dict`.
vision_config.update(_vision_config_dict)
if text_config is None:
text_config = {}
logger.info("`text_config` is `None`. Initializing the `CLIPTextConfig` with default values.")
if vision_config is None:
vision_config = {}
logger.info("`vision_config` is `None`. initializing the `CLIPVisionConfig` with default values.")
self.text_config = CLIPTextConfig(**text_config)
self.vision_config = CLIPVisionConfig(**vision_config)
self.projection_dim = projection_dim
self.logit_scale_init_value = logit_scale_init_value
self.initializer_factor = 1.0
@classmethod
def from_text_vision_configs(cls, text_config: CLIPTextConfig, vision_config: CLIPVisionConfig, **kwargs):
r"""
Instantiate a [`CLIPConfig`] (or a derived class) from clip text model configuration and clip vision model
configuration.
Returns:
[`CLIPConfig`]: An instance of a configuration object
"""
return cls(text_config=text_config.to_dict(), vision_config=vision_config.to_dict(), **kwargs)
|
class_definition
| 10,264 | 17,797 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/configuration_clip.py
| null | 4,793 |
class CLIPOnnxConfig(OnnxConfig):
@property
def inputs(self) -> Mapping[str, Mapping[int, str]]:
return OrderedDict(
[
("input_ids", {0: "batch", 1: "sequence"}),
("pixel_values", {0: "batch", 1: "num_channels", 2: "height", 3: "width"}),
("attention_mask", {0: "batch", 1: "sequence"}),
]
)
@property
def outputs(self) -> Mapping[str, Mapping[int, str]]:
return OrderedDict(
[
("logits_per_image", {0: "batch"}),
("logits_per_text", {0: "batch"}),
("text_embeds", {0: "batch"}),
("image_embeds", {0: "batch"}),
]
)
@property
def atol_for_validation(self) -> float:
return 1e-4
def generate_dummy_inputs(
self,
processor: "ProcessorMixin",
batch_size: int = -1,
seq_length: int = -1,
framework: Optional["TensorType"] = None,
) -> Mapping[str, Any]:
text_input_dict = super().generate_dummy_inputs(
processor.tokenizer, batch_size=batch_size, seq_length=seq_length, framework=framework
)
image_input_dict = super().generate_dummy_inputs(
processor.image_processor, batch_size=batch_size, framework=framework
)
return {**text_input_dict, **image_input_dict}
@property
def default_onnx_opset(self) -> int:
return 14
|
class_definition
| 17,800 | 19,269 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/configuration_clip.py
| null | 4,794 |
class TFCLIPOutput(ModelOutput):
"""
Args:
loss (`tf.Tensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`):
Contrastive loss for image-text similarity.
logits_per_image:(`tf.Tensor` of shape `(image_batch_size, text_batch_size)`):
The scaled dot product scores between `image_embeds` and `text_embeds`. This represents the image-text
similarity scores.
logits_per_text:(`tf.Tensor` of shape `(text_batch_size, image_batch_size)`):
The scaled dot product scores between `text_embeds` and `image_embeds`. This represents the text-image
similarity scores.
text_embeds(`tf.Tensor` of shape `(batch_size, output_dim`):
The text embeddings obtained by applying the projection layer to the pooled output of [`TFCLIPTextModel`].
image_embeds(`tf.Tensor` of shape `(batch_size, output_dim`):
The image embeddings obtained by applying the projection layer to the pooled output of
[`TFCLIPVisionModel`].
text_model_output([`~modeling_tf_utils.TFBaseModelOutputWithPooling`]):
The output of the [`TFCLIPTextModel`].
vision_model_output([`~modeling_tf_utils.TFBaseModelOutputWithPooling`]):
The output of the [`TFCLIPVisionModel`].
"""
loss: tf.Tensor | None = None
logits_per_image: tf.Tensor = None
logits_per_text: tf.Tensor = None
text_embeds: tf.Tensor = None
image_embeds: tf.Tensor = None
text_model_output: TFBaseModelOutputWithPooling = None
vision_model_output: TFBaseModelOutputWithPooling = None
def to_tuple(self) -> Tuple[Any]:
return tuple(
self[k] if k not in ["text_model_output", "vision_model_output"] else getattr(self, k).to_tuple()
for k in self.keys()
)
|
class_definition
| 2,731 | 4,578 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/modeling_tf_clip.py
| null | 4,795 |
class TFCLIPVisionEmbeddings(keras.layers.Layer):
def __init__(self, config: CLIPVisionConfig, **kwargs):
super().__init__(**kwargs)
self.embed_dim = config.hidden_size
self.image_size = config.image_size
self.patch_size = config.patch_size
self.num_patches = (self.image_size // self.patch_size) ** 2
self.num_positions = self.num_patches + 1
self.config = config
self.patch_embedding = keras.layers.Conv2D(
filters=self.embed_dim,
kernel_size=self.patch_size,
strides=self.patch_size,
padding="valid",
data_format="channels_last",
use_bias=False,
kernel_initializer=get_initializer(self.config.initializer_range * self.config.initializer_factor),
name="patch_embedding",
)
def build(self, input_shape: tf.TensorShape = None):
factor = self.config.initializer_factor
self.class_embedding = self.add_weight(
shape=(self.embed_dim,),
initializer=get_initializer(self.embed_dim**-0.5 * factor),
trainable=True,
name="class_embedding",
)
with tf.name_scope("position_embedding"):
self.position_embedding = self.add_weight(
shape=(self.num_positions, self.embed_dim),
initializer=get_initializer(self.config.initializer_range * factor),
trainable=True,
name="embeddings",
)
if self.built:
return
self.built = True
if getattr(self, "patch_embedding", None) is not None:
with tf.name_scope(self.patch_embedding.name):
self.patch_embedding.build([None, None, None, self.config.num_channels])
def call(self, pixel_values: tf.Tensor) -> tf.Tensor:
"""`pixel_values` is expected to be of NCHW format."""
batch_size, num_channels, height, width = shape_list(pixel_values)
# When running on CPU, `tf.nn.conv2d` doesn't support `NCHW` format.
# So change the input format from `NCHW` to `NHWC`.
# shape = (batch_size, in_height, in_width, in_channels=num_channels)
pixel_values = tf.transpose(pixel_values, perm=(0, 2, 3, 1))
patch_embeds = self.patch_embedding(pixel_values)
# Change the 2D spatial dimensions to a single temporal dimension.
# shape = (batch_size, num_patches, out_channels=embed_dim)
patch_embeds = tf.reshape(tensor=patch_embeds, shape=(batch_size, self.num_patches, -1))
# add the [CLS] token to the embedded patch tokens
class_embeds = tf.broadcast_to(self.class_embedding, shape=(batch_size, 1, self.embed_dim))
embeddings = tf.concat((class_embeds, patch_embeds), axis=1)
embeddings = embeddings + self.position_embedding
return embeddings
|
class_definition
| 4,581 | 7,479 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/modeling_tf_clip.py
| null | 4,796 |
class TFCLIPTextEmbeddings(keras.layers.Layer):
def __init__(self, config: CLIPTextConfig, **kwargs):
super().__init__(**kwargs)
self.embed_dim = config.hidden_size
self.config = config
def build(self, input_shape: tf.TensorShape = None):
with tf.name_scope("token_embedding"):
self.weight = self.add_weight(
shape=(self.config.vocab_size, self.embed_dim),
initializer=get_initializer(self.config.initializer_factor * self.config.initializer_range),
trainable=True,
name="weight",
)
with tf.name_scope("position_embedding"):
self.position_embedding = self.add_weight(
shape=(self.config.max_position_embeddings, self.embed_dim),
initializer=get_initializer(self.config.initializer_factor * self.config.initializer_range),
trainable=True,
name="embeddings",
)
super().build(input_shape)
def call(
self,
input_ids: tf.Tensor = None,
position_ids: tf.Tensor = None,
inputs_embeds: tf.Tensor = None,
) -> tf.Tensor:
"""
Applies embedding based on inputs tensor.
Returns:
final_embeddings (`tf.Tensor`): output embedding tensor.
"""
if input_ids is None and inputs_embeds is None:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if inputs_embeds is None:
check_embeddings_within_bounds(input_ids, self.config.vocab_size)
inputs_embeds = tf.gather(params=self.weight, indices=input_ids)
input_shape = shape_list(inputs_embeds)[:-1]
if position_ids is None:
position_ids = tf.expand_dims(tf.range(start=0, limit=input_shape[-1]), axis=0)
position_embeds = tf.gather(params=self.position_embedding, indices=position_ids)
position_embeds = tf.tile(input=position_embeds, multiples=(input_shape[0], 1, 1))
final_embeddings = inputs_embeds + position_embeds
return final_embeddings
|
class_definition
| 7,482 | 9,618 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/modeling_tf_clip.py
| null | 4,797 |
class TFCLIPAttention(keras.layers.Layer):
"""Multi-headed attention from 'Attention Is All You Need' paper"""
def __init__(self, config: CLIPConfig, **kwargs):
super().__init__(**kwargs)
self.embed_dim = config.hidden_size
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = self.embed_dim // self.num_attention_heads
if self.attention_head_size * self.num_attention_heads != self.embed_dim:
raise ValueError(
f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:"
f" {self.num_attention_heads})."
)
factor = config.initializer_factor
in_proj_std = (self.embed_dim**-0.5) * ((2 * config.num_hidden_layers) ** -0.5) * factor
out_proj_std = (self.embed_dim**-0.5) * factor
self.sqrt_att_head_size = math.sqrt(self.attention_head_size)
self.q_proj = keras.layers.Dense(
units=self.embed_dim, kernel_initializer=get_initializer(in_proj_std), name="q_proj"
)
self.k_proj = keras.layers.Dense(
units=self.embed_dim, kernel_initializer=get_initializer(in_proj_std), name="k_proj"
)
self.v_proj = keras.layers.Dense(
units=self.embed_dim, kernel_initializer=get_initializer(in_proj_std), name="v_proj"
)
self.dropout = keras.layers.Dropout(rate=config.attention_dropout)
self.out_proj = keras.layers.Dense(
units=self.embed_dim, kernel_initializer=get_initializer(out_proj_std), name="out_proj"
)
# copied from transformers.models.bert.modeling_tf_bert.TFBertSelfAttention.transpose_for_scores
def transpose_for_scores(self, tensor: tf.Tensor, batch_size: int) -> tf.Tensor:
# Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size]
tensor = tf.reshape(tensor=tensor, shape=(batch_size, -1, self.num_attention_heads, self.attention_head_size))
# Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size]
return tf.transpose(tensor, perm=[0, 2, 1, 3])
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
causal_attention_mask: tf.Tensor,
output_attentions: bool,
training: bool = False,
) -> Tuple[tf.Tensor]:
"""Input shape: Batch x Time x Channel"""
batch_size = shape_list(hidden_states)[0]
mixed_query_layer = self.q_proj(inputs=hidden_states)
mixed_key_layer = self.k_proj(inputs=hidden_states)
mixed_value_layer = self.v_proj(inputs=hidden_states)
query_layer = self.transpose_for_scores(mixed_query_layer, batch_size)
key_layer = self.transpose_for_scores(mixed_key_layer, batch_size)
value_layer = self.transpose_for_scores(mixed_value_layer, batch_size)
# Take the dot product between "query" and "key" to get the raw attention scores.
# (batch size, num_heads, seq_len_q, seq_len_k)
attention_scores = tf.matmul(query_layer, key_layer, transpose_b=True)
dk = tf.cast(self.sqrt_att_head_size, dtype=attention_scores.dtype)
attention_scores = tf.divide(attention_scores, dk)
# apply the causal_attention_mask first
if causal_attention_mask is not None:
# Apply the causal attention mask (precomputed for all layers in TFCLIPModel call() function)
attention_scores = tf.add(attention_scores, causal_attention_mask)
if attention_mask is not None:
# Apply the attention mask (precomputed for all layers in TFCLIPModel call() function)
attention_scores = tf.add(attention_scores, attention_mask)
# Normalize the attention scores to probabilities.
_attention_probs = stable_softmax(logits=attention_scores, axis=-1)
# This is actually dropping out entire tokens to attend to, which might
# seem a bit unusual, but is taken from the original Transformer paper.
attention_probs = self.dropout(inputs=_attention_probs, training=training)
attention_output = tf.matmul(attention_probs, value_layer)
attention_output = tf.transpose(attention_output, perm=[0, 2, 1, 3])
# (batch_size, seq_len_q, embed_dim)
attention_output = tf.reshape(tensor=attention_output, shape=(batch_size, -1, self.embed_dim))
attention_output = self.out_proj(attention_output, training=training)
# In TFBert, attention weights are returned after dropout.
# However, in CLIP, they are returned before dropout.
outputs = (attention_output, _attention_probs) if output_attentions else (attention_output,)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "q_proj", None) is not None:
with tf.name_scope(self.q_proj.name):
self.q_proj.build([None, None, self.embed_dim])
if getattr(self, "k_proj", None) is not None:
with tf.name_scope(self.k_proj.name):
self.k_proj.build([None, None, self.embed_dim])
if getattr(self, "v_proj", None) is not None:
with tf.name_scope(self.v_proj.name):
self.v_proj.build([None, None, self.embed_dim])
if getattr(self, "out_proj", None) is not None:
with tf.name_scope(self.out_proj.name):
self.out_proj.build([None, None, self.embed_dim])
|
class_definition
| 9,621 | 15,306 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/modeling_tf_clip.py
| null | 4,798 |
class TFCLIPMLP(keras.layers.Layer):
def __init__(self, config: CLIPConfig, **kwargs):
super().__init__(**kwargs)
self.activation_fn = get_tf_activation(config.hidden_act)
factor = config.initializer_factor
in_proj_std = (config.hidden_size**-0.5) * ((2 * config.num_hidden_layers) ** -0.5) * factor
fc_std = (2 * config.hidden_size) ** -0.5 * factor
self.fc1 = keras.layers.Dense(
units=config.intermediate_size, kernel_initializer=get_initializer(fc_std), name="fc1"
)
self.fc2 = keras.layers.Dense(
units=config.hidden_size, kernel_initializer=get_initializer(in_proj_std), name="fc2"
)
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.fc1(inputs=hidden_states)
hidden_states = self.activation_fn(hidden_states)
hidden_states = self.fc2(inputs=hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "fc1", None) is not None:
with tf.name_scope(self.fc1.name):
self.fc1.build([None, None, self.config.hidden_size])
if getattr(self, "fc2", None) is not None:
with tf.name_scope(self.fc2.name):
self.fc2.build([None, None, self.config.intermediate_size])
|
class_definition
| 15,309 | 16,737 | 0 |
/Users/nielsrogge/Documents/python_projecten/transformers/src/transformers/models/clip/modeling_tf_clip.py
| null | 4,799 |
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