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Unverified Commit d02bd4f3 authored by Bhavika Tekwani's avatar Bhavika Tekwani Committed by GitHub
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Better input variable naming for OpenAI (TF) (#16129) 

* Replace input_processing

* move unpack_inputs
parent c8c8c114
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Showing with 72 additions and 157 deletions
src/transformers/models/openai/modeling_tf_openai.py
View file @ d02bd4f3
......@@ -37,8 +37,8 @@ from ...modeling_tf_utils import (
TFSequenceSummary,
TFSharedEmbeddings,
get_initializer,
input_processing,
keras_serializable,
unpack_inputs,
)
from ...tf_utils import shape_list
from ...utils import logging
......@@ -234,6 +234,7 @@ class TFOpenAIGPTMainLayer(tf.keras.layers.Layer):
"""
raise NotImplementedError
@unpack_inputs
def call(
self,
input_ids=None,
......@@ -248,42 +249,27 @@ class TFOpenAIGPTMainLayer(tf.keras.layers.Layer):
training=False,
**kwargs,
):
inputs = input_processing(
func=self.call,
config=self.config,
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
kwargs_call=kwargs,
)
if inputs["input_ids"] is not None and inputs["inputs_embeds"] is not None:
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 inputs["input_ids"] is not None:
input_shape = shape_list(inputs["input_ids"])
inputs["input_ids"] = tf.reshape(inputs["input_ids"], [-1, input_shape[-1]])
elif inputs["inputs_embeds"] is not None:
input_shape = shape_list(inputs["inputs_embeds"])[:-1]
elif input_ids is not None:
input_shape = shape_list(input_ids)
input_ids = tf.reshape(input_ids, [-1, input_shape[-1]])
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 inputs["position_ids"] is None:
inputs["position_ids"] = tf.expand_dims(tf.range(input_shape[-1]), axis=0)
if position_ids is None:
position_ids = tf.expand_dims(tf.range(input_shape[-1]), axis=0)
if inputs["attention_mask"] is not None:
if attention_mask is not None:
# 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.
inputs["attention_mask"] = tf.reshape(inputs["attention_mask"], (input_shape[0], 1, 1, input_shape[1]))
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
......@@ -292,69 +278,65 @@ class TFOpenAIGPTMainLayer(tf.keras.layers.Layer):
# effectively the same as removing these entirely.
one_cst = tf.constant(1.0)
inputs["attention_mask"] = tf.cast(inputs["attention_mask"], dtype=one_cst.dtype)
inputs["attention_mask"] = tf.multiply(
tf.subtract(one_cst, inputs["attention_mask"]), tf.constant(-10000.0)
)
attention_mask = tf.cast(attention_mask, dtype=one_cst.dtype)
attention_mask = tf.multiply(tf.subtract(one_cst, attention_mask), tf.constant(-10000.0))
else:
inputs["attention_mask"] = None
attention_mask = None
# Prepare head mask if needed
# 1.0 in head_mask indicate we keep the head
# attention_probs has shape bsz x n_heads x N x N
# input head_mask has shape [num_heads] or [num_hidden_layers x num_heads]
# and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length]
if inputs["head_mask"] is not None:
if head_mask is not None:
raise NotImplementedError
else:
inputs["head_mask"] = [None] * self.num_hidden_layers
head_mask = [None] * self.num_hidden_layers
# head_mask = tf.constant([0] * self.num_hidden_layers)
inputs["position_ids"] = tf.reshape(inputs["position_ids"], [-1, shape_list(inputs["position_ids"])[-1]])
position_ids = tf.reshape(position_ids, [-1, shape_list(position_ids)[-1]])
if inputs["inputs_embeds"] is None:
inputs["inputs_embeds"] = self.tokens_embed(inputs["input_ids"], mode="embedding")
position_embeds = tf.gather(self.positions_embed, inputs["position_ids"])
if inputs["token_type_ids"] is not None:
inputs["token_type_ids"] = tf.reshape(
inputs["token_type_ids"], [-1, shape_list(inputs["token_type_ids"])[-1]]
)
token_type_embeds = self.tokens_embed(inputs["token_type_ids"], mode="embedding")
if inputs_embeds is None:
inputs_embeds = self.tokens_embed(input_ids, mode="embedding")
position_embeds = tf.gather(self.positions_embed, position_ids)
if token_type_ids is not None:
token_type_ids = tf.reshape(token_type_ids, [-1, shape_list(token_type_ids)[-1]])
token_type_embeds = self.tokens_embed(token_type_ids, mode="embedding")
else:
token_type_embeds = 0
hidden_states = inputs["inputs_embeds"] + position_embeds + token_type_embeds
hidden_states = self.drop(hidden_states, training=inputs["training"])
hidden_states = inputs_embeds + position_embeds + token_type_embeds
hidden_states = self.drop(hidden_states, training=training)
output_shape = input_shape + [shape_list(hidden_states)[-1]]
all_attentions = () if inputs["output_attentions"] else None
all_hidden_states = () if inputs["output_hidden_states"] else None
all_attentions = () if output_attentions else None
all_hidden_states = () if output_hidden_states else None
for i, block in enumerate(self.h):
if inputs["output_hidden_states"]:
if output_hidden_states:
all_hidden_states = all_hidden_states + (tf.reshape(hidden_states, output_shape),)
outputs = block(
hidden_states,
inputs["attention_mask"],
inputs["head_mask"][i],
inputs["output_attentions"],
training=inputs["training"],
attention_mask,
head_mask[i],
output_attentions,
training=training,
)
hidden_states = outputs[0]
if inputs["output_attentions"]:
if output_attentions:
all_attentions = all_attentions + (outputs[1],)
hidden_states = tf.reshape(hidden_states, output_shape)
# Add last hidden state
if inputs["output_hidden_states"]:
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if inputs["output_attentions"]:
if output_attentions:
# let the number of heads free (-1) so we can extract attention even after head pruning
attention_output_shape = input_shape[:-1] + [-1] + shape_list(all_attentions[0])[-2:]
all_attentions = tuple(tf.reshape(t, attention_output_shape) for t in all_attentions)
if not inputs["return_dict"]:
if not return_dict:
return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None)
return TFBaseModelOutput(
......@@ -518,6 +500,7 @@ class TFOpenAIGPTModel(TFOpenAIGPTPreTrainedModel):
super().__init__(config, *inputs, **kwargs)
self.transformer = TFOpenAIGPTMainLayer(config, name="transformer")
@unpack_inputs
@add_start_docstrings_to_model_forward(OPENAI_GPT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
processor_class=_TOKENIZER_FOR_DOC,
......@@ -539,9 +522,8 @@ class TFOpenAIGPTModel(TFOpenAIGPTPreTrainedModel):
training=False,
**kwargs,
):
inputs = input_processing(
func=self.call,
config=self.config,
outputs = self.transformer(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
......@@ -552,19 +534,6 @@ class TFOpenAIGPTModel(TFOpenAIGPTPreTrainedModel):
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
kwargs_call=kwargs,
)
outputs = self.transformer(
input_ids=inputs["input_ids"],
attention_mask=inputs["attention_mask"],
token_type_ids=inputs["token_type_ids"],
position_ids=inputs["position_ids"],
head_mask=inputs["head_mask"],
inputs_embeds=inputs["inputs_embeds"],
output_attentions=inputs["output_attentions"],
output_hidden_states=inputs["output_hidden_states"],
return_dict=inputs["return_dict"],
training=inputs["training"],
)
return outputs
......@@ -594,6 +563,7 @@ class TFOpenAIGPTLMHeadModel(TFOpenAIGPTPreTrainedModel, TFCausalLanguageModelin
def set_output_embeddings(self, value):
self.set_input_embeddings(value)
@unpack_inputs
@add_start_docstrings_to_model_forward(OPENAI_GPT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
processor_class=_TOKENIZER_FOR_DOC,
......@@ -621,9 +591,8 @@ class TFOpenAIGPTLMHeadModel(TFOpenAIGPTPreTrainedModel, TFCausalLanguageModelin
Labels for computing the cross entropy classification loss. Indices should be in `[0, ...,
config.vocab_size - 1]`.
"""
inputs = input_processing(
func=self.call,
config=self.config,
transformer_outputs = self.transformer(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
......@@ -633,34 +602,20 @@ class TFOpenAIGPTLMHeadModel(TFOpenAIGPTPreTrainedModel, TFCausalLanguageModelin
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
labels=labels,
training=training,
kwargs_call=kwargs,
)
transformer_outputs = self.transformer(
input_ids=inputs["input_ids"],
attention_mask=inputs["attention_mask"],
token_type_ids=inputs["token_type_ids"],
position_ids=inputs["position_ids"],
head_mask=inputs["head_mask"],
inputs_embeds=inputs["inputs_embeds"],
output_attentions=inputs["output_attentions"],
output_hidden_states=inputs["output_hidden_states"],
return_dict=inputs["return_dict"],
training=inputs["training"],
)
hidden_states = transformer_outputs[0]
logits = self.transformer.tokens_embed(hidden_states, mode="linear")
loss = None
if inputs["labels"] is not None:
if labels is not None:
# shift labels to the left and cut last logit token
shifted_logits = logits[:, :-1]
labels = inputs["labels"][:, 1:]
labels = labels[:, 1:]
loss = self.hf_compute_loss(labels, shifted_logits)
if not inputs["return_dict"]:
if not return_dict:
output = (logits,) + transformer_outputs[1:]
return ((loss,) + output) if loss is not None else output
......@@ -696,6 +651,7 @@ class TFOpenAIGPTDoubleHeadsModel(TFOpenAIGPTPreTrainedModel):
config, initializer_range=config.initializer_range, name="multiple_choice_head"
)
@unpack_inputs
@add_start_docstrings_to_model_forward(OPENAI_GPT_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=TFOpenAIGPTDoubleHeadsModelOutput, config_class=_CONFIG_FOR_DOC)
def call(
......@@ -746,58 +702,35 @@ class TFOpenAIGPTDoubleHeadsModel(TFOpenAIGPTPreTrainedModel):
>>> lm_prediction_scores, mc_prediction_scores = outputs[:2]
```"""
inputs = input_processing(
func=self.call,
config=self.config,
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
mc_token_ids=mc_token_ids,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
kwargs_call=kwargs,
)
if inputs["input_ids"] is not None:
input_shapes = shape_list(inputs["input_ids"])
if input_ids is not None:
input_shapes = shape_list(input_ids)
else:
input_shapes = shape_list(inputs["inputs_embeds"])[:-1]
input_shapes = shape_list(inputs_embeds)[:-1]
seq_length = input_shapes[-1]
flat_input_ids = tf.reshape(inputs["input_ids"], (-1, seq_length)) if inputs["input_ids"] is not None else None
flat_attention_mask = (
tf.reshape(inputs["attention_mask"], (-1, seq_length)) if inputs["attention_mask"] is not None else None
)
flat_token_type_ids = (
tf.reshape(inputs["token_type_ids"], (-1, seq_length)) if inputs["token_type_ids"] is not None else None
)
flat_position_ids = (
tf.reshape(inputs["position_ids"], (-1, seq_length)) if inputs["position_ids"] is not None else None
)
flat_input_ids = tf.reshape(input_ids, (-1, seq_length)) if input_ids is not None else None
flat_attention_mask = tf.reshape(attention_mask, (-1, seq_length)) if attention_mask is not None else None
flat_token_type_ids = tf.reshape(token_type_ids, (-1, seq_length)) if token_type_ids is not None else None
flat_position_ids = tf.reshape(position_ids, (-1, seq_length)) if position_ids is not None else None
transformer_outputs = self.transformer(
flat_input_ids,
flat_attention_mask,
flat_token_type_ids,
flat_position_ids,
inputs["head_mask"],
inputs["inputs_embeds"],
inputs["output_attentions"],
inputs["output_hidden_states"],
return_dict=inputs["return_dict"],
training=inputs["training"],
head_mask,
inputs_embeds,
output_attentions,
output_hidden_states,
return_dict=return_dict,
training=training,
)
hidden_states = transformer_outputs[0]
hidden_states = tf.reshape(hidden_states, input_shapes + shape_list(hidden_states)[-1:])
lm_logits = self.transformer.tokens_embed(hidden_states, mode="linear")
mc_logits = self.multiple_choice_head(hidden_states, inputs["mc_token_ids"], training=inputs["training"])
mc_logits = self.multiple_choice_head(hidden_states, mc_token_ids, training=training)
mc_logits = tf.squeeze(mc_logits, axis=-1)
if not inputs["return_dict"]:
if not return_dict:
return (lm_logits, mc_logits) + transformer_outputs[1:]
return TFOpenAIGPTDoubleHeadsModelOutput(
......@@ -857,6 +790,7 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
)
self.transformer = TFOpenAIGPTMainLayer(config, name="transformer")
@unpack_inputs
@add_start_docstrings_to_model_forward(OPENAI_GPT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
processor_class=_TOKENIZER_FOR_DOC,
......@@ -884,9 +818,7 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
Labels for computing the cross entropy classification loss. Indices should be in `[0, ...,
config.vocab_size - 1]`.
"""
inputs = input_processing(
func=self.call,
config=self.config,
transformer_outputs = self.transformer(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
......@@ -896,22 +828,7 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
labels=labels,
training=training,
kwargs_call=kwargs,
)
transformer_outputs = self.transformer(
input_ids=inputs["input_ids"],
attention_mask=inputs["attention_mask"],
token_type_ids=inputs["token_type_ids"],
position_ids=inputs["position_ids"],
head_mask=inputs["head_mask"],
inputs_embeds=inputs["inputs_embeds"],
output_attentions=inputs["output_attentions"],
output_hidden_states=inputs["output_hidden_states"],
return_dict=inputs["return_dict"],
training=inputs["training"],
)
hidden_states = transformer_outputs[0]
......@@ -920,12 +837,12 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
if self.config.pad_token_id is None:
sequence_lengths = -1
else:
if inputs["input_ids"] is not None:
if input_ids is not None:
sequence_lengths = (
tf.reduce_sum(
tf.cast(
tf.math.not_equal(inputs["input_ids"], self.config.pad_token_id),
dtype=inputs["input_ids"].dtype,
tf.math.not_equal(input_ids, self.config.pad_token_id),
dtype=input_ids.dtype,
),
-1,
keepdims=False,
......@@ -941,11 +858,11 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
)
loss = None
if inputs["labels"] is not None:
if labels is not None:
if input_ids is not None:
batch_size, sequence_length = shape_list(inputs["input_ids"])[:2]
batch_size, sequence_length = shape_list(input_ids)[:2]
else:
batch_size, sequence_length = shape_list(inputs["inputs_embeds"])[:2]
batch_size, sequence_length = shape_list(inputs_embeds)[:2]
assert (
self.config.pad_token_id is not None or batch_size == 1
), "Cannot handle batch sizes > 1 if no padding token is defined."
......@@ -953,13 +870,11 @@ class TFOpenAIGPTForSequenceClassification(TFOpenAIGPTPreTrainedModel, TFSequenc
if not tf.is_tensor(sequence_lengths):
in_logits = logits[0:batch_size, sequence_lengths]
loss = self.hf_compute_loss(
tf.reshape(inputs["labels"], [-1, 1]), tf.reshape(in_logits, [-1, self.num_labels])
)
loss = self.hf_compute_loss(tf.reshape(labels, [-1, 1]), tf.reshape(in_logits, [-1, self.num_labels]))
pooled_logits = in_logits if in_logits is not None else logits
if not inputs["return_dict"]:
if not return_dict:
output = (pooled_logits,) + transformer_outputs[1:]
return ((loss,) + output) if loss is not None else output
......
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