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updating tests

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This commit is contained in:
thomwolf
2019-07-12 10:57:58 +02:00
parent 3fbceed8d2
commit 2918b7d2a0
14 changed files with 672 additions and 596 deletions
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15
pytorch_transformers/modeling_bert.py
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@@ -617,6 +617,7 @@ class BertModel(BertPreTrainedModel):
old_embeddings = self.embeddings.word_embeddings
new_embeddings = self._get_resized_embeddings(old_embeddings, new_num_tokens)
self.embeddings.word_embeddings = new_embeddings
return self.embeddings.word_embeddings
def _prune_heads(self, heads_to_prune):
""" Prunes heads of the model.
@@ -758,11 +759,8 @@ class BertForPreTraining(BertPreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.bert.embeddings.word_embeddings.weight
if self.config.torchscript:
self.cls.predictions.decoder.weight = nn.Parameter(input_embeddings.clone())
else:
self.cls.predictions.decoder.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.cls.predictions.decoder,
self.bert.embeddings.word_embeddings)
def forward(self, input_ids, token_type_ids=None, attention_mask=None, masked_lm_labels=None,
next_sentence_label=None, head_mask=None):
@@ -864,11 +862,8 @@ class BertForMaskedLM(BertPreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.bert.embeddings.word_embeddings.weight
if self.config.torchscript:
self.cls.predictions.decoder.weight = nn.Parameter(input_embeddings.clone())
else:
self.cls.predictions.decoder.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.cls.predictions.decoder,
self.bert.embeddings.word_embeddings)
def forward(self, input_ids, token_type_ids=None, attention_mask=None, masked_lm_labels=None, head_mask=None):
"""

15
pytorch_transformers/modeling_gpt2.py
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@@ -414,6 +414,7 @@ class GPT2Model(GPT2PreTrainedModel):
def _resize_token_embeddings(self, new_num_tokens):
self.wte = self._get_resized_embeddings(self.wte, new_num_tokens)
return self.wte
def _prune_heads(self, heads_to_prune):
""" Prunes heads of the model.
@@ -562,11 +563,8 @@ class GPT2LMHeadModel(GPT2PreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.transformer.wte.weight
if self.config.torchscript:
self.lm_head.weight = nn.Parameter(input_embeddings.clone())
else:
self.lm_head.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.lm_head,
self.transformer.wte)
def forward(self, input_ids, position_ids=None, token_type_ids=None, lm_labels=None, past=None, head_mask=None):
"""
@@ -658,11 +656,8 @@ class GPT2DoubleHeadsModel(GPT2PreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.transformer.wte.weight
if self.config.torchscript:
self.lm_head.weight = nn.Parameter(input_embeddings.clone())
else:
self.lm_head.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.lm_head,
self.transformer.wte)
def forward(self, input_ids, mc_token_ids=None, lm_labels=None, mc_labels=None, token_type_ids=None,
position_ids=None, past=None, head_mask=None):

15
pytorch_transformers/modeling_openai.py
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@@ -430,6 +430,7 @@ class OpenAIGPTModel(OpenAIGPTPreTrainedModel):
def _resize_token_embeddings(self, new_num_tokens):
self.tokens_embed = self._get_resized_embeddings(self.tokens_embed, new_num_tokens)
return self.tokens_embed
def _prune_heads(self, heads_to_prune):
""" Prunes heads of the model.
@@ -583,11 +584,8 @@ class OpenAIGPTLMHeadModel(OpenAIGPTPreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.transformer.tokens_embed.weight
if self.config.torchscript:
self.lm_head.weight = nn.Parameter(input_embeddings.clone())
else:
self.lm_head.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.lm_head,
self.transformer.tokens_embed)
def forward(self, input_ids, position_ids=None, token_type_ids=None, lm_labels=None, head_mask=None):
"""
@@ -696,11 +694,8 @@ class OpenAIGPTDoubleHeadsModel(OpenAIGPTPreTrainedModel):
""" Make sure we are sharing the input and output embeddings.
Export to TorchScript can't handle parameter sharing so we are cloning them instead.
"""
input_embeddings = self.transformer.tokens_embed.weight
if self.config.torchscript:
self.lm_head.weight = nn.Parameter(input_embeddings.clone())
else:
self.lm_head.weight = input_embeddings # Tied weights
self._tie_or_clone_weights(self.lm_head,
self.transformer.tokens_embed)
def forward(self, input_ids, mc_token_ids=None, lm_labels=None, mc_labels=None, token_type_ids=None,
position_ids=None, head_mask=None):

19
pytorch_transformers/modeling_transfo_xl.py
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@@ -291,6 +291,10 @@ class TransfoXLConfig(PretrainedConfig):
def vocab_size(self):
return self.n_token
@vocab_size.setter
def vocab_size(self, value):
self.n_token = value
@property
def hidden_size(self):
return self.d_model
@@ -1003,7 +1007,7 @@ class TransfoXLModel(TransfoXLPreTrainedModel):
self.apply(self.init_weights)
def _resize_token_embeddings(self, new_num_tokens):
raise NotImplementedError
return self.word_emb
def backward_compatible(self):
self.sample_softmax = -1
@@ -1280,13 +1284,20 @@ class TransfoXLLMHeadModel(TransfoXLPreTrainedModel):
else:
if self.config.tie_weight:
for i in range(len(self.crit.out_layers)):
self.crit.out_layers[i].weight = self.transformer.word_emb.emb_layers[i].weight
self._tie_or_clone_weights(self.crit.out_layers[i],
self.transformer.word_emb.emb_layers[i])
if self.config.tie_projs:
for i, tie_proj in enumerate(self.config.tie_projs):
if tie_proj and self.config.div_val == 1 and self.config.d_model != self.config.d_embed:
self.crit.out_projs[i] = self.transformer.word_emb.emb_projs[0]
if self.config.torchscript:
self.crit.out_projs[i] = nn.Parameter(self.transformer.word_emb.emb_projs[0].clone())
else:
self.crit.out_projs[i] = self.transformer.word_emb.emb_projs[0]
elif tie_proj and self.config.div_val != 1:
self.crit.out_projs[i] = self.transformer.word_emb.emb_projs[i]
if self.config.torchscript:
self.crit.out_projs[i] = nn.Parameter(self.transformer.word_emb.emb_projs[i].clone())
else:
self.crit.out_projs[i] = self.transformer.word_emb.emb_projs[i]
def reset_length(self, tgt_len, ext_len, mem_len):
self.transformer.reset_length(tgt_len, ext_len, mem_len)

47
pytorch_transformers/modeling_utils.py
View File

@@ -165,9 +165,27 @@ class PreTrainedModel(nn.Module):
# Save config in model
self.config = config
def _get_resized_embeddings(self, old_embeddings, new_num_tokens):
# Build new embeddings
def _get_resized_embeddings(self, old_embeddings, new_num_tokens=None):
""" Build a resized Embedding Module from a provided token Embedding Module.
Increasing the size will add newly initialized vectors at the end
Reducing the size will remove vectors from the end
Args:
new_num_tokens: (Optional) New number of tokens in the embedding matrix.
Increasing the size will add newly initialized vectors at the end
Reducing the size will remove vectors from the end
If not provided or None: return the provided token Embedding Module.
Return:
Pointer to the resized Embedding Module or the old Embedding Module if new_num_tokens is None
"""
if new_num_tokens is None:
return old_embeddings
old_num_tokens, old_embedding_dim = old_embeddings.weight.size()
if old_num_tokens == new_num_tokens:
return old_embeddings
# Build new embeddings
new_embeddings = nn.Embedding(new_num_tokens, old_embedding_dim)
new_embeddings.to(old_embeddings.weight.device)
@@ -180,18 +198,29 @@ class PreTrainedModel(nn.Module):
return new_embeddings
def resize_token_embeddings(self, new_num_tokens):
""" Resize input token embeddings matrix.
def _tie_or_clone_weights(self, first_module, second_module):
""" Tie or clone module weights depending of weither we are using TorchScript or not
"""
if self.config.torchscript:
first_module.weight = nn.Parameter(second_module.weight.clone())
else:
first_module.weight = second_module.weight
def resize_token_embeddings(self, new_num_tokens=None):
""" Resize input token embeddings matrix of the model if new_num_tokens != config.vocab_size.
Args:
new_num_tokens: New number of tokens in the embedding matrix.
new_num_tokens: (Optional) New number of tokens in the embedding matrix.
Increasing the size will add newly initialized vectors at the end
Reducing the size will remove vectors from the end
If not provided or None: does nothing.
Return:
Pointer to the input tokens Embedding Module of the model
"""
if new_num_tokens == self.config.vocab_size:
return
base_model = getattr(self, self.base_model_prefix, self) # get the base model if needed
base_model._resize_token_embeddings(new_num_tokens)
model_embeds = base_model._resize_token_embeddings(new_num_tokens)
if new_num_tokens is None:
return model_embeds
# Update base model and current model config
self.config.vocab_size = new_num_tokens
@@ -201,6 +230,8 @@ class PreTrainedModel(nn.Module):
if hasattr(self, 'tie_weights'):
self.tie_weights()
return model_embeds
def prune_heads(self, heads_to_prune):
""" Prunes heads of the base model.
heads_to_prune: dict of {layer_num: list of heads to prune in this layer}

10
pytorch_transformers/modeling_xlm.py
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@@ -184,6 +184,10 @@ class XLMConfig(PretrainedConfig):
def vocab_size(self):
return self.n_words
@vocab_size.setter
def vocab_size(self, value):
self.n_words = value
@property
def hidden_size(self):
return self.emb_dim
@@ -479,6 +483,7 @@ class XLMModel(XLMPreTrainedModel):
def _resize_token_embeddings(self, new_num_tokens):
self.embeddings = self._get_resized_embeddings(self.embeddings, new_num_tokens)
return self.embeddings
def _prune_heads(self, heads_to_prune):
""" Prunes heads of the model.
@@ -728,10 +733,7 @@ class XLMWithLMHeadModel(XLMPreTrainedModel):
def tie_weights(self):
""" Make sure we are sharing the embeddings
"""
if self.config.torchscript:
self.pred_layer.proj.weight = nn.Parameter(self.transformer.embeddings.weight.clone())
else:
self.pred_layer.proj.weight = self.transformer.embeddings.weight
self._tie_or_clone_weights(self.pred_layer.proj, self.transformer.embeddings)
def forward(self, input_ids, lengths=None, positions=None, langs=None, token_type_ids=None,
attention_mask=None, cache=None, labels=None, head_mask=None):

13
pytorch_transformers/modeling_xlnet.py
View File

@@ -316,6 +316,10 @@ class XLNetConfig(PretrainedConfig):
def vocab_size(self):
return self.n_token
@vocab_size.setter
def vocab_size(self, value):
self.n_token = value
@property
def hidden_size(self):
return self.d_model
@@ -660,10 +664,10 @@ class XLNetModel(XLNetPreTrainedModel):
def _resize_token_embeddings(self, new_num_tokens):
self.word_embedding = self._get_resized_embeddings(self.word_embedding, new_num_tokens)
return self.word_embedding
def _prune_heads(self, heads_to_prune):
logger.info("Head pruning is not implemented for XLNet")
pass
raise NotImplementedError
def create_mask(self, qlen, mlen):
"""
@@ -987,10 +991,7 @@ class XLNetLMHeadModel(XLNetPreTrainedModel):
def tie_weights(self):
""" Make sure we are sharing the embeddings
"""
if self.config.torchscript:
self.lm_loss.weight = nn.Parameter(self.transformer.word_embedding.weight.clone())
else:
self.lm_loss.weight = self.transformer.word_embedding.weight
self._tie_or_clone_weights(self.lm_loss, self.transformer.word_embedding)
def forward(self, input_ids, token_type_ids=None, input_mask=None, attention_mask=None,
mems=None, perm_mask=None, target_mapping=None, inp_q=None,

88
pytorch_transformers/tests/modeling_bert_test.py
View File

@@ -26,10 +26,15 @@ from pytorch_transformers import (BertConfig, BertModel, BertForMaskedLM,
BertForTokenClassification, BertForMultipleChoice)
from pytorch_transformers.modeling_bert import BERT_PRETRAINED_MODEL_ARCHIVE_MAP
from .modeling_common_test import (create_and_check_commons, ConfigTester, ids_tensor)
from .modeling_common_test import (CommonTestCases, ConfigTester, ids_tensor)
class BertModelTest(unittest.TestCase):
class BertModelTest(CommonTestCases.CommonModelTester):
all_model_classes = (BertModel, BertForMaskedLM, BertForNextSentencePrediction,
BertForPreTraining, BertForQuestionAnswering, BertForSequenceClassification,
BertForTokenClassification)
class BertModelTester(object):
def __init__(self,
@@ -55,9 +60,6 @@ class BertModelTest(unittest.TestCase):
num_labels=3,
num_choices=4,
scope=None,
all_model_classes = (BertModel, BertForMaskedLM, BertForNextSentencePrediction,
BertForPreTraining, BertForQuestionAnswering, BertForSequenceClassification,
BertForTokenClassification),
):
self.parent = parent
self.batch_size = batch_size
@@ -81,7 +83,6 @@ class BertModelTest(unittest.TestCase):
self.num_labels = num_labels
self.num_choices = num_choices
self.scope = scope
self.all_model_classes = all_model_classes
def prepare_config_and_inputs(self):
input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
@@ -253,16 +254,51 @@ class BertModelTest(unittest.TestCase):
self.check_loss_output(result)
def create_and_check_bert_commons(self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels):
def prepare_config_and_inputs_for_common(self):
config_and_inputs = self.prepare_config_and_inputs()
(config, input_ids, token_type_ids, input_mask,
sequence_labels, token_labels, choice_labels) = config_and_inputs
inputs_dict = {'input_ids': input_ids, 'token_type_ids': token_type_ids, 'attention_mask': input_mask}
create_and_check_commons(self, config, inputs_dict)
return config, inputs_dict
def test_default(self):
self.run_tester(BertModelTest.BertModelTester(self))
def setUp(self):
self.model_tester = BertModelTest.BertModelTester(self)
self.config_tester = ConfigTester(self, config_class=BertConfig, hidden_size=37)
def test_config(self):
config_tester = ConfigTester(self, config_class=BertConfig, hidden_size=37)
config_tester.run_common_tests()
self.config_tester.run_common_tests()
def test_bert_model(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_model(*config_and_inputs)
def test_for_masked_lm(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_masked_lm(*config_and_inputs)
def test_for_multiple_choice(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_multiple_choice(*config_and_inputs)
def test_for_next_sequence_prediction(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_next_sequence_prediction(*config_and_inputs)
def test_for_pretraining(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_pretraining(*config_and_inputs)
def test_for_question_answering(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_question_answering(*config_and_inputs)
def test_for_sequence_classification(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_sequence_classification(*config_and_inputs)
def test_for_token_classification(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_bert_for_token_classification(*config_and_inputs)
@pytest.mark.slow
def test_model_from_pretrained(self):
@@ -272,33 +308,5 @@ class BertModelTest(unittest.TestCase):
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
def run_tester(self, tester):
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_model(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_masked_lm(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_multiple_choice(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_next_sequence_prediction(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_pretraining(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_question_answering(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_sequence_classification(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_for_token_classification(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_bert_commons(*config_and_inputs)
if __name__ == "__main__":
unittest.main()

848
pytorch_transformers/tests/modeling_common_test.py
View File

@@ -39,207 +39,471 @@ def _config_zero_init(config):
setattr(configs_no_init, key, 0.0)
return configs_no_init
def _create_and_check_torchscript_output_attentions(tester, model_classes, config, inputs_dict):
config.output_attentions = True
_create_and_check_torchscript(tester, model_classes, config, inputs_dict)
class CommonTestCases:
def _create_and_check_torchscript_output_hidden_state(tester, model_classes, config, inputs_dict):
config.output_hidden_states = True
_create_and_check_torchscript(tester, model_classes, config, inputs_dict)
class CommonModelTester(unittest.TestCase):
def _create_and_check_torchscript(tester, model_classes, config, inputs_dict):
configs_no_init = _config_zero_init(config) # To be sure we have no Nan
configs_no_init.torchscript = True
for model_class in model_classes:
model = model_class(config=configs_no_init)
model.eval()
inputs = inputs_dict['input_ids'] # Let's keep only input_ids
model_tester = None
all_model_classes = ()
test_torchscript = True
test_pruning = True
test_resize_embeddings = True
try:
torch.jit.trace(model, inputs)
except RuntimeError:
tester.parent.fail("Couldn't trace module.")
def test_initialization(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
try:
traced_gpt2 = torch.jit.trace(model, inputs)
torch.jit.save(traced_gpt2, "traced_model.pt")
except RuntimeError:
tester.parent.fail("Couldn't save module.")
configs_no_init = _config_zero_init(config)
for model_class in self.all_model_classes:
model = model_class(config=configs_no_init)
for name, param in model.named_parameters():
if param.requires_grad:
self.assertIn(param.data.mean().item(), [0.0, 1.0],
msg="Parameter {} of model {} seems not properly initialized".format(name, model_class))
try:
loaded_model = torch.jit.load("traced_model.pt")
os.remove("traced_model.pt")
except ValueError:
tester.parent.fail("Couldn't load module.")
def test_attention_outputs(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
model.eval()
loaded_model.eval()
for model_class in self.all_model_classes:
config.output_attentions = True
config.output_hidden_states = False
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
attentions = outputs[-1]
self.assertEqual(model.config.output_attentions, True)
self.assertEqual(model.config.output_hidden_states, False)
self.assertEqual(len(attentions), self.model_tester.num_hidden_layers)
self.assertListEqual(
list(attentions[0].shape[-3:]),
[self.model_tester.num_attention_heads,
self.model_tester.seq_length,
self.model_tester.key_len if hasattr(self.model_tester, 'key_len') else self.model_tester.seq_length])
out_len = len(outputs)
model_params = model.parameters()
loaded_model_params = loaded_model.parameters()
# Check attention is always last and order is fine
config.output_attentions = True
config.output_hidden_states = True
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
self.assertEqual(out_len+1, len(outputs))
self.assertEqual(model.config.output_attentions, True)
self.assertEqual(model.config.output_hidden_states, True)
models_equal = True
for p1, p2 in zip(model_params, loaded_model_params):
if p1.data.ne(p2.data).sum() > 0:
models_equal = False
attentions = outputs[-1]
self.assertEqual(len(attentions), self.model_tester.num_hidden_layers)
self.assertListEqual(
list(attentions[0].shape[-3:]),
[self.model_tester.num_attention_heads,
self.model_tester.seq_length,
self.model_tester.key_len if hasattr(self.model_tester, 'key_len') else self.model_tester.seq_length])
tester.parent.assertTrue(models_equal)
def test_torchscript(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
def _create_and_check_initialization(tester, model_classes, config, inputs_dict):
configs_no_init = _config_zero_init(config)
for model_class in model_classes:
model = model_class(config=configs_no_init)
for name, param in model.named_parameters():
if param.requires_grad:
tester.parent.assertIn(param.data.mean().item(), [0.0, 1.0],
msg="Parameter {} of model {} seems not properly initialized".format(name, model_class))
self._create_and_check_torchscript(config, inputs_dict)
def _create_and_check_for_headmasking(tester, model_classes, config, inputs_dict):
configs_no_init = _config_zero_init(config) # To be sure we have no Nan
for model_class in model_classes:
config.output_attentions = True
config.output_hidden_states = True
model = model_class(config=configs_no_init)
model.eval()
def test_torchscript_output_attentions(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
# Prepare head_mask
# Set require_grad after having prepared the tensor to avoid error (leaf variable has been moved into the graph interior)
head_mask = torch.ones(tester.num_hidden_layers, tester.num_attention_heads)
head_mask[0, 0] = 0
head_mask[-1, :-1] = 0
head_mask.requires_grad_(requires_grad=True)
inputs = inputs_dict.copy()
inputs['head_mask'] = head_mask
config.output_attentions = True
self._create_and_check_torchscript(config, inputs_dict)
outputs = model(**inputs)
def test_torchscript_output_hidden_state(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
# Test that we can get a gradient back for importance score computation
output = sum(t.sum() for t in outputs[0])
output = output.sum()
output.backward()
multihead_outputs = head_mask.grad
config.output_hidden_states = True
self._create_and_check_torchscript(config, inputs_dict)
attentions = outputs[-1]
hidden_states = outputs[-2]
def _create_and_check_torchscript(self, config, inputs_dict):
if not self.test_torchscript:
return
# Remove Nan
configs_no_init = _config_zero_init(config) # To be sure we have no Nan
configs_no_init.torchscript = True
for model_class in self.all_model_classes:
model = model_class(config=configs_no_init)
model.eval()
inputs = inputs_dict['input_ids'] # Let's keep only input_ids
tester.parent.assertIsNotNone(multihead_outputs)
tester.parent.assertEqual(len(multihead_outputs), tester.num_hidden_layers)
tester.parent.assertAlmostEqual(
attentions[0][..., 0, :, :].flatten().sum().item(), 0.0)
tester.parent.assertNotEqual(
attentions[0][..., -1, :, :].flatten().sum().item(), 0.0)
tester.parent.assertNotEqual(
attentions[1][..., 0, :, :].flatten().sum().item(), 0.0)
tester.parent.assertAlmostEqual(
attentions[-1][..., -2, :, :].flatten().sum().item(), 0.0)
tester.parent.assertNotEqual(
attentions[-1][..., -1, :, :].flatten().sum().item(), 0.0)
try:
torch.jit.trace(model, inputs)
except RuntimeError:
self.fail("Couldn't trace module.")
try:
traced_gpt2 = torch.jit.trace(model, inputs)
torch.jit.save(traced_gpt2, "traced_model.pt")
except RuntimeError:
self.fail("Couldn't save module.")
try:
loaded_model = torch.jit.load("traced_model.pt")
os.remove("traced_model.pt")
except ValueError:
self.fail("Couldn't load module.")
model.eval()
loaded_model.eval()
model_params = model.parameters()
loaded_model_params = loaded_model.parameters()
models_equal = True
for p1, p2 in zip(model_params, loaded_model_params):
if p1.data.ne(p2.data).sum() > 0:
models_equal = False
self.assertTrue(models_equal)
def _create_and_check_for_head_pruning(tester, model_classes, config, inputs_dict):
for model_class in model_classes:
config.output_attentions = True
config.output_hidden_states = False
model = model_class(config=config)
model.eval()
heads_to_prune = {0: list(range(1, tester.num_attention_heads)),
-1: [0]}
model.prune_heads(heads_to_prune)
outputs = model(**inputs_dict)
def test_headmasking(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
attentions = outputs[-1]
config.output_attentions = True
config.output_hidden_states = True
configs_no_init = _config_zero_init(config) # To be sure we have no Nan
for model_class in self.all_model_classes:
model = model_class(config=configs_no_init)
model.eval()
tester.parent.assertEqual(
attentions[0].shape[-3], 1)
tester.parent.assertEqual(
attentions[1].shape[-3], tester.num_attention_heads)
tester.parent.assertEqual(
attentions[-1].shape[-3], tester.num_attention_heads - 1)
# Prepare head_mask
# Set require_grad after having prepared the tensor to avoid error (leaf variable has been moved into the graph interior)
head_mask = torch.ones(self.model_tester.num_hidden_layers, self.model_tester.num_attention_heads)
head_mask[0, 0] = 0
head_mask[-1, :-1] = 0
head_mask.requires_grad_(requires_grad=True)
inputs = inputs_dict.copy()
inputs['head_mask'] = head_mask
outputs = model(**inputs)
# Test that we can get a gradient back for importance score computation
output = sum(t.sum() for t in outputs[0])
output = output.sum()
output.backward()
multihead_outputs = head_mask.grad
attentions = outputs[-1]
hidden_states = outputs[-2]
# Remove Nan
self.assertIsNotNone(multihead_outputs)
self.assertEqual(len(multihead_outputs), self.model_tester.num_hidden_layers)
self.assertAlmostEqual(
attentions[0][..., 0, :, :].flatten().sum().item(), 0.0)
self.assertNotEqual(
attentions[0][..., -1, :, :].flatten().sum().item(), 0.0)
self.assertNotEqual(
attentions[1][..., 0, :, :].flatten().sum().item(), 0.0)
self.assertAlmostEqual(
attentions[-1][..., -2, :, :].flatten().sum().item(), 0.0)
self.assertNotEqual(
attentions[-1][..., -1, :, :].flatten().sum().item(), 0.0)
def _create_and_check_for_attentions(tester, model_classes, config, inputs_dict):
for model_class in model_classes:
config.output_attentions = True
config.output_hidden_states = False
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
attentions = outputs[-1]
tester.parent.assertEqual(model.config.output_attentions, True)
tester.parent.assertEqual(model.config.output_hidden_states, False)
tester.parent.assertEqual(len(attentions), tester.num_hidden_layers)
tester.parent.assertListEqual(
list(attentions[0].shape[-3:]),
[tester.num_attention_heads,
tester.seq_length,
tester.key_len if hasattr(tester, 'key_len') else tester.seq_length])
out_len = len(outputs)
def test_head_pruning(self):
if not self.test_pruning:
return
# Check attention is always last and order is fine
config.output_attentions = True
config.output_hidden_states = True
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
tester.parent.assertEqual(out_len+1, len(outputs))
tester.parent.assertEqual(model.config.output_attentions, True)
tester.parent.assertEqual(model.config.output_hidden_states, True)
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
attentions = outputs[-1]
tester.parent.assertEqual(len(attentions), tester.num_hidden_layers)
tester.parent.assertListEqual(
list(attentions[0].shape[-3:]),
[tester.num_attention_heads,
tester.seq_length,
tester.key_len if hasattr(tester, 'key_len') else tester.seq_length])
for model_class in self.all_model_classes:
config.output_attentions = True
config.output_hidden_states = False
model = model_class(config=config)
model.eval()
heads_to_prune = {0: list(range(1, self.model_tester.num_attention_heads)),
-1: [0]}
model.prune_heads(heads_to_prune)
outputs = model(**inputs_dict)
def _create_and_check_for_hidden_states(tester, model_classes, config, inputs_dict):
for model_class in model_classes:
config.output_hidden_states = True
config.output_attentions = False
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
hidden_states = outputs[-1]
tester.parent.assertEqual(model.config.output_attentions, False)
tester.parent.assertEqual(model.config.output_hidden_states, True)
tester.parent.assertEqual(len(hidden_states), tester.num_hidden_layers + 1)
tester.parent.assertListEqual(
list(hidden_states[0].shape[-2:]),
[tester.seq_length, tester.hidden_size])
attentions = outputs[-1]
self.assertEqual(
attentions[0].shape[-3], 1)
self.assertEqual(
attentions[1].shape[-3], self.model_tester.num_attention_heads)
self.assertEqual(
attentions[-1].shape[-3], self.model_tester.num_attention_heads - 1)
def create_and_check_commons(tester, config, inputs_dict, test_pruning=True, test_torchscript=True):
_create_and_check_initialization(tester, tester.all_model_classes, config, inputs_dict)
_create_and_check_for_attentions(tester, tester.all_model_classes, config, inputs_dict)
_create_and_check_for_headmasking(tester, tester.all_model_classes, config, inputs_dict)
_create_and_check_for_hidden_states(tester, tester.all_model_classes, config, inputs_dict)
def test_hidden_states_output(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
if test_torchscript:
_create_and_check_torchscript(tester, tester.all_model_classes, config, inputs_dict)
_create_and_check_torchscript_output_attentions(tester, tester.all_model_classes, config, inputs_dict)
_create_and_check_torchscript_output_hidden_state(tester, tester.all_model_classes, config, inputs_dict)
for model_class in self.all_model_classes:
config.output_hidden_states = True
config.output_attentions = False
model = model_class(config)
model.eval()
outputs = model(**inputs_dict)
hidden_states = outputs[-1]
self.assertEqual(model.config.output_attentions, False)
self.assertEqual(model.config.output_hidden_states, True)
self.assertEqual(len(hidden_states), self.model_tester.num_hidden_layers + 1)
self.assertListEqual(
list(hidden_states[0].shape[-2:]),
[self.model_tester.seq_length, self.model_tester.hidden_size])
if test_pruning:
_create_and_check_for_head_pruning(tester, tester.all_model_classes, config, inputs_dict)
def test_resize_tokens_embeddings(self):
original_config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
if not self.test_resize_embeddings:
return
for model_class in self.all_model_classes:
config = copy.deepcopy(original_config)
model = model_class(config)
model_vocab_size = config.vocab_size
# Retrieve the embeddings and clone theme
model_embed = model.resize_token_embeddings(model_vocab_size)
cloned_embeddings = model_embed.weight.clone()
# Check that resizing the token embeddings with a larger vocab size increases the model's vocab size
model_embed = model.resize_token_embeddings(model_vocab_size + 10)
self.assertEqual(model.config.vocab_size, model_vocab_size + 10)
# Check that it actually resizes the embeddings matrix
self.assertEqual(model_embed.weight.shape[0], cloned_embeddings.shape[0] + 10)
# Check that resizing the token embeddings with a smaller vocab size decreases the model's vocab size
model_embed = model.resize_token_embeddings(model_vocab_size - 15)
self.assertEqual(model.config.vocab_size, model_vocab_size - 15)
# Check that it actually resizes the embeddings matrix
self.assertEqual(model_embed.weight.shape[0], cloned_embeddings.shape[0] - 15)
# Check that adding and removing tokens has not modified the first part of the embedding matrix.
models_equal = True
for p1, p2 in zip(cloned_embeddings, model_embed.weight):
if p1.data.ne(p2.data).sum() > 0:
models_equal = False
self.assertTrue(models_equal)
def test_tie_model_weights(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
def check_same_values(layer_1, layer_2):
equal = True
for p1, p2 in zip(layer_1.weight, layer_2.weight):
if p1.data.ne(p2.data).sum() > 0:
equal = False
return equal
for model_class in self.all_model_classes:
if not hasattr(model_class, 'tie_weights'):
continue
config.torchscript = True
model_not_tied = model_class(config)
params_not_tied = list(model_not_tied.parameters())
config_tied = copy.deepcopy(config)
config_tied.torchscript = False
model_tied = model_class(config_tied)
params_tied = list(model_tied.parameters())
# Check that the embedding layer and decoding layer are the same in size and in value
self.assertGreater(len(params_not_tied), len(params_tied))
# self.assertTrue(check_same_values(embeddings, decoding))
# # Check that after modification, they remain the same.
# embeddings.weight.data.div_(2)
# # Check that the embedding layer and decoding layer are the same in size and in value
# self.assertTrue(embeddings.weight.shape, decoding.weight.shape)
# self.assertTrue(check_same_values(embeddings, decoding))
# # Check that after modification, they remain the same.
# decoding.weight.data.div_(4)
# # Check that the embedding layer and decoding layer are the same in size and in value
# self.assertTrue(embeddings.weight.shape, decoding.weight.shape)
# self.assertTrue(check_same_values(embeddings, decoding))
# Check that after resize they remain tied.
model_tied.resize_token_embeddings(config.vocab_size + 10)
params_tied_2 = list(model_tied.parameters())
self.assertGreater(len(params_not_tied), len(params_tied))
self.assertEqual(len(params_tied_2), len(params_tied))
# decoding.weight.data.mul_(20)
# # Check that the embedding layer and decoding layer are the same in size and in value
# self.assertTrue(model.transformer.wte.weight.shape, model.lm_head.weight.shape)
# self.assertTrue(check_same_values(model.transformer.wte, model.lm_head))
def ids_tensor(shape, vocab_size, rng=None, name=None):
"""Creates a random int32 tensor of the shape within the vocab size."""
if rng is None:
rng = random.Random()
class GPTModelTester(CommonModelTester):
total_dims = 1
for dim in shape:
total_dims *= dim
def __init__(self,
parent,
batch_size=13,
seq_length=7,
is_training=True,
use_position_ids=True,
use_token_type_ids=True,
use_labels=True,
vocab_size=99,
n_positions=33,
hidden_size=32,
num_hidden_layers=5,
num_attention_heads=4,
n_choices=3,
type_sequence_label_size=2,
initializer_range=0.02,
num_labels=3,
scope=None,
config_class=None,
base_model_class=None,
lm_head_model_class=None,
double_head_model_class=None,
):
self.parent = parent
self.batch_size = batch_size
self.seq_length = seq_length
self.is_training = is_training
self.use_position_ids = use_position_ids
self.use_token_type_ids = use_token_type_ids
self.use_labels = use_labels
self.vocab_size = vocab_size
self.n_positions = n_positions
self.hidden_size = hidden_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.n_choices = n_choices
self.type_sequence_label_size = type_sequence_label_size
self.initializer_range = initializer_range
self.num_labels = num_labels
self.scope = scope
self.config_class = config_class
self.base_model_class = base_model_class
self.lm_head_model_class = lm_head_model_class
self.double_head_model_class = double_head_model_class
self.all_model_classes = (base_model_class, lm_head_model_class, double_head_model_class)
values = []
for _ in range(total_dims):
values.append(rng.randint(0, vocab_size - 1))
def prepare_config_and_inputs(self):
total_num_tokens = self.vocab_size
input_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], total_num_tokens)
return torch.tensor(data=values, dtype=torch.long).view(shape).contiguous()
position_ids = None
if self.use_position_ids:
position_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], self.n_positions)
token_type_ids = None
if self.use_token_type_ids:
total_voc = self.vocab_size
token_type_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], total_voc)
mc_labels = None
lm_labels = None
mc_token_ids = None
if self.use_labels:
mc_labels = ids_tensor([self.batch_size], self.type_sequence_label_size)
lm_labels = ids_tensor([self.batch_size, self.n_choices, self.seq_length], self.num_labels)
mc_token_ids = ids_tensor([self.batch_size, self.n_choices], self.seq_length)
config = self.config_class(
vocab_size_or_config_json_file=self.vocab_size,
n_positions=self.n_positions,
n_embd=self.hidden_size,
n_layer=self.num_hidden_layers,
n_head=self.num_attention_heads,
initializer_range=self.initializer_range)
return (config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids)
def create_and_check_base_model(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.base_model_class(config)
model.eval()
outputs = model(input_ids, position_ids, token_type_ids)
outputs = model(input_ids, position_ids)
outputs = model(input_ids)
hidden_state = outputs[0]
self.parent.assertListEqual(
list(hidden_state.size()),
[self.batch_size, self.n_choices, self.seq_length, self.hidden_size])
def create_and_check_lm_head(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.lm_head_model_class(config)
model.eval()
outputs = model(input_ids, position_ids, token_type_ids, lm_labels)
loss, lm_logits = outputs[:2]
total_voc = self.vocab_size
self.parent.assertListEqual(
list(lm_logits.size()),
[self.batch_size, self.n_choices, self.seq_length, total_voc])
self.parent.assertListEqual(
list(loss.size()),
[])
def create_and_check_presents(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
for model_class in self.all_model_classes:
model = model_class(config)
model.eval()
outputs = model(input_ids)
presents = outputs[-1]
self.parent.assertEqual(self.num_hidden_layers, len(presents))
self.parent.assertListEqual(
list(presents[0].size()),
[2, self.batch_size * self.n_choices, self.num_attention_heads,
self.seq_length, self.hidden_size // self.num_attention_heads])
def create_and_check_double_heads(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.double_head_model_class(config)
model.eval()
outputs = model(input_ids, mc_token_ids, lm_labels=lm_labels, mc_labels=mc_labels,
token_type_ids=token_type_ids, position_ids=position_ids)
lm_loss, mc_loss, lm_logits, mc_logits = outputs[:4]
loss = [lm_loss, mc_loss]
total_voc = self.vocab_size
self.parent.assertListEqual(
list(lm_logits.size()),
[self.batch_size, self.n_choices, self.seq_length, total_voc])
self.parent.assertListEqual(
list(mc_logits.size()),
[self.batch_size, self.n_choices])
self.parent.assertListEqual(
[list(l.size()) for l in loss],
[[], []])
def create_and_check_model_from_pretrained(self):
cache_dir = "/tmp/pytorch_transformers_test/"
for model_name in list(self.base_model_class.pretrained_model_archive_map.keys())[:1]:
model = self.base_model_class.from_pretrained(model_name, cache_dir=cache_dir)
shutil.rmtree(cache_dir)
self.parent.assertIsNotNone(model)
def prepare_config_and_inputs_for_common(self):
config_and_inputs = self.prepare_config_and_inputs()
(config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids) = config_and_inputs
inputs_dict = {'input_ids': input_ids}
return config, inputs_dict
def run_common_tests(self, test_presents=False):
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_base_model(*config_and_inputs)
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_lm_head(*config_and_inputs)
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_double_heads(*config_and_inputs)
if test_presents:
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_presents(*config_and_inputs)
def run_slow_tests(self):
self.create_and_check_model_from_pretrained()
class ConfigTester(object):
@@ -275,179 +539,22 @@ class ConfigTester(object):
self.create_and_test_config_to_json_file()
class GPTModelTester(object):
def __init__(self,
parent,
batch_size=13,
seq_length=7,
is_training=True,
use_position_ids=True,
use_token_type_ids=True,
use_labels=True,
vocab_size=99,
n_positions=33,
hidden_size=32,
num_hidden_layers=5,
num_attention_heads=4,
n_choices=3,
type_sequence_label_size=2,
initializer_range=0.02,
num_labels=3,
scope=None,
config_class=None,
base_model_class=None,
lm_head_model_class=None,
double_head_model_class=None,
):
self.parent = parent
self.batch_size = batch_size
self.seq_length = seq_length
self.is_training = is_training
self.use_position_ids = use_position_ids
self.use_token_type_ids = use_token_type_ids
self.use_labels = use_labels
self.vocab_size = vocab_size
self.n_positions = n_positions
self.hidden_size = hidden_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.n_choices = n_choices
self.type_sequence_label_size = type_sequence_label_size
self.initializer_range = initializer_range
self.num_labels = num_labels
self.scope = scope
self.config_class = config_class
self.base_model_class = base_model_class
self.lm_head_model_class = lm_head_model_class
self.double_head_model_class = double_head_model_class
self.all_model_classes = (base_model_class, lm_head_model_class, double_head_model_class)
def prepare_config_and_inputs(self):
total_num_tokens = self.vocab_size
input_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], total_num_tokens)
position_ids = None
if self.use_position_ids:
position_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], self.n_positions)
token_type_ids = None
if self.use_token_type_ids:
total_voc = self.vocab_size
token_type_ids = ids_tensor([self.batch_size, self.n_choices, self.seq_length], total_voc)
mc_labels = None
lm_labels = None
mc_token_ids = None
if self.use_labels:
mc_labels = ids_tensor([self.batch_size], self.type_sequence_label_size)
lm_labels = ids_tensor([self.batch_size, self.n_choices, self.seq_length], self.num_labels)
mc_token_ids = ids_tensor([self.batch_size, self.n_choices], self.seq_length)
config = self.config_class(
vocab_size_or_config_json_file=self.vocab_size,
n_positions=self.n_positions,
n_embd=self.hidden_size,
n_layer=self.num_hidden_layers,
n_head=self.num_attention_heads,
initializer_range=self.initializer_range)
return (config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids)
def create_and_check_base_model(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.base_model_class(config)
model.eval()
outputs = model(input_ids, position_ids, token_type_ids)
outputs = model(input_ids, position_ids)
outputs = model(input_ids)
hidden_state = outputs[0]
self.parent.assertListEqual(
list(hidden_state.size()),
[self.batch_size, self.n_choices, self.seq_length, self.hidden_size])
def create_and_check_lm_head(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.lm_head_model_class(config)
model.eval()
outputs = model(input_ids, position_ids, token_type_ids, lm_labels)
loss, lm_logits = outputs[:2]
def ids_tensor(shape, vocab_size, rng=None, name=None):
"""Creates a random int32 tensor of the shape within the vocab size."""
if rng is None:
rng = random.Random()
total_voc = self.vocab_size
self.parent.assertListEqual(
list(lm_logits.size()),
[self.batch_size, self.n_choices, self.seq_length, total_voc])
self.parent.assertListEqual(
list(loss.size()),
[])
total_dims = 1
for dim in shape:
total_dims *= dim
def create_and_check_presents(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
for model_class in self.all_model_classes:
model = model_class(config)
model.eval()
outputs = model(input_ids)
presents = outputs[-1]
self.parent.assertEqual(self.num_hidden_layers, len(presents))
self.parent.assertListEqual(
list(presents[0].size()),
[2, self.batch_size * self.n_choices, self.num_attention_heads,
self.seq_length, self.hidden_size // self.num_attention_heads])
values = []
for _ in range(total_dims):
values.append(rng.randint(0, vocab_size - 1))
def create_and_check_double_heads(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
model = self.double_head_model_class(config)
model.eval()
outputs = model(input_ids, mc_token_ids, lm_labels=lm_labels, mc_labels=mc_labels,
token_type_ids=token_type_ids, position_ids=position_ids)
lm_loss, mc_loss, lm_logits, mc_logits = outputs[:4]
loss = [lm_loss, mc_loss]
total_voc = self.vocab_size
self.parent.assertListEqual(
list(lm_logits.size()),
[self.batch_size, self.n_choices, self.seq_length, total_voc])
self.parent.assertListEqual(
list(mc_logits.size()),
[self.batch_size, self.n_choices])
self.parent.assertListEqual(
[list(l.size()) for l in loss],
[[], []])
def create_and_check_model_from_pretrained(self):
cache_dir = "/tmp/pytorch_transformers_test/"
for model_name in list(self.base_model_class.pretrained_model_archive_map.keys())[:1]:
model = self.base_model_class.from_pretrained(model_name, cache_dir=cache_dir)
shutil.rmtree(cache_dir)
self.parent.assertIsNotNone(model)
def create_and_check_commons(self, config, input_ids, token_type_ids, position_ids,
mc_labels, lm_labels, mc_token_ids):
inputs_dict = {'input_ids': input_ids}
create_and_check_commons(self, config, inputs_dict)
def run_common_tests(self, test_presents=False):
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_base_model(*config_and_inputs)
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_lm_head(*config_and_inputs)
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_double_heads(*config_and_inputs)
if test_presents:
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_presents(*config_and_inputs)
config_and_inputs = self.prepare_config_and_inputs()
self.create_and_check_commons(*config_and_inputs)
def run_slow_tests(self):
self.create_and_check_model_from_pretrained()
return torch.tensor(data=values, dtype=torch.long).view(shape).contiguous()
class ModelUtilsTest(unittest.TestCase):
@@ -471,79 +578,6 @@ class ModelUtilsTest(unittest.TestCase):
self.assertEqual(model.config.output_hidden_states, True)
self.assertEqual(model.config, config)
def test_resize_tokens_embeddings(self):
logging.basicConfig(level=logging.INFO)
for model_name in list(BERT_PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
config = BertConfig.from_pretrained(model_name)
model = BertModel.from_pretrained(model_name)
model_vocab_size = config.vocab_size
# Retrieve the embeddings and clone theme
cloned_embeddings = model.embeddings.word_embeddings.weight.clone()
# Check that resizing the token embeddings with a larger vocab size increases the model's vocab size
model.resize_token_embeddings(model_vocab_size + 10)
self.assertEqual(model.config.vocab_size, model_vocab_size + 10)
# Check that it actually resizes the embeddings matrix
self.assertEqual(model.embeddings.word_embeddings.weight.shape[0], cloned_embeddings.shape[0] + 10)
# Check that resizing the token embeddings with a smaller vocab size decreases the model's vocab size
model.resize_token_embeddings(model_vocab_size)
self.assertEqual(model.config.vocab_size, model_vocab_size)
# Check that it actually resizes the embeddings matrix
self.assertEqual(model.embeddings.word_embeddings.weight.shape[0], cloned_embeddings.shape[0])
# Check that adding and removing tokens has not modified the first part of the embedding matrix.
models_equal = True
for p1, p2 in zip(cloned_embeddings, model.embeddings.word_embeddings.weight):
if p1.data.ne(p2.data).sum() > 0:
models_equal = False
self.assertTrue(models_equal)
def test_tie_model_weights(self):
logging.basicConfig(level=logging.INFO)
def check_same_values(layer_1, layer_2):
equal = True
for p1, p2 in zip(layer_1.weight, layer_2.weight):
if p1.data.ne(p2.data).sum() > 0:
equal = False
return equal
for model_name in list(GPT2_PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
config = GPT2Config.from_pretrained(model_name)
model = GPT2LMHeadModel.from_pretrained(model_name)
# Get the embeddings and decoding layer
embeddings = model.transformer.wte
decoding = model.lm_head
# Check that the embedding layer and decoding layer are the same in size and in value
self.assertTrue(embeddings.weight.shape, decoding.weight.shape)
self.assertTrue(check_same_values(embeddings, decoding))
# Check that after modification, they remain the same.
embeddings.weight.data.div_(2)
# Check that the embedding layer and decoding layer are the same in size and in value
self.assertTrue(embeddings.weight.shape, decoding.weight.shape)
self.assertTrue(check_same_values(embeddings, decoding))
# Check that after modification, they remain the same.
decoding.weight.data.div_(4)
# Check that the embedding layer and decoding layer are the same in size and in value
self.assertTrue(embeddings.weight.shape, decoding.weight.shape)
self.assertTrue(check_same_values(embeddings, decoding))
# Check that after resize they remain tied.
model.resize_token_embeddings(config.vocab_size + 10)
decoding.weight.data.mul_(20)
# Check that the embedding layer and decoding layer are the same in size and in value
self.assertTrue(model.transformer.wte.weight.shape, model.lm_head.weight.shape)
self.assertTrue(check_same_values(model.transformer.wte, model.lm_head))
if __name__ == "__main__":
unittest.main()

13
pytorch_transformers/tests/modeling_gpt2_test.py
View File

@@ -16,19 +16,14 @@ from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import unittest
import json
import random
import shutil
import pytest
import torch
from pytorch_transformers import (GPT2Config, GPT2Model,
GPT2LMHeadModel, GPT2DoubleHeadsModel)
GPT2LMHeadModel, GPT2DoubleHeadsModel)
from .modeling_common_test import (create_and_check_commons, ConfigTester, GPTModelTester)
from .modeling_common_test import CommonTestCases, ConfigTester
class GPT2ModelTest(unittest.TestCase):
@@ -37,14 +32,14 @@ class GPT2ModelTest(unittest.TestCase):
config_tester.run_common_tests()
def test_model(self):
model_tester = GPTModelTester(self, config_class=GPT2Config, base_model_class=GPT2Model,
model_tester = CommonTestCases.GPTModelTester(self, config_class=GPT2Config, base_model_class=GPT2Model,
lm_head_model_class=GPT2LMHeadModel,
double_head_model_class=GPT2DoubleHeadsModel)
model_tester.run_common_tests(test_presents=True)
@pytest.mark.slow
def test_pretrained(self):
model_tester = GPTModelTester(self, config_class=GPT2Config, base_model_class=GPT2Model,
model_tester = CommonTestCases.GPTModelTester(self, config_class=GPT2Config, base_model_class=GPT2Model,
lm_head_model_class=GPT2LMHeadModel,
double_head_model_class=GPT2DoubleHeadsModel)
model_tester.run_slow_tests()

7
pytorch_transformers/tests/modeling_openai_test.py
View File

@@ -19,12 +19,11 @@ from __future__ import print_function
import unittest
import pytest
import torch
from pytorch_transformers import (OpenAIGPTConfig, OpenAIGPTModel,
OpenAIGPTLMHeadModel, OpenAIGPTDoubleHeadsModel)
from .modeling_common_test import (create_and_check_commons, ConfigTester, GPTModelTester)
from .modeling_common_test import CommonTestCases, ConfigTester
class OpenAIModelTest(unittest.TestCase):
@@ -33,14 +32,14 @@ class OpenAIModelTest(unittest.TestCase):
config_tester.run_common_tests()
def test_model(self):
model_tester = GPTModelTester(self, config_class=OpenAIGPTConfig, base_model_class=OpenAIGPTModel,
model_tester = CommonTestCases.GPTModelTester(self, config_class=OpenAIGPTConfig, base_model_class=OpenAIGPTModel,
lm_head_model_class=OpenAIGPTLMHeadModel,
double_head_model_class=OpenAIGPTDoubleHeadsModel)
model_tester.run_common_tests(test_presents=False)
@pytest.mark.slow
def test_pretrained(self):
model_tester = GPTModelTester(self, config_class=OpenAIGPTConfig, base_model_class=OpenAIGPTModel,
model_tester = CommonTestCases.GPTModelTester(self, config_class=OpenAIGPTConfig, base_model_class=OpenAIGPTModel,
lm_head_model_class=OpenAIGPTLMHeadModel,
double_head_model_class=OpenAIGPTDoubleHeadsModel)
model_tester.run_slow_tests()

56
pytorch_transformers/tests/modeling_transfo_xl_test.py
View File

@@ -28,9 +28,15 @@ import torch
from pytorch_transformers import (TransfoXLConfig, TransfoXLModel, TransfoXLLMHeadModel)
from pytorch_transformers.modeling_transfo_xl import TRANSFO_XL_PRETRAINED_MODEL_ARCHIVE_MAP
from .modeling_common_test import ConfigTester, create_and_check_commons, ids_tensor
from .modeling_common_test import ConfigTester, CommonTestCases, ids_tensor
class TransfoXLModelTest(CommonTestCases.CommonModelTester):
all_model_classes = (TransfoXLModel, TransfoXLLMHeadModel)
test_pruning = False
test_torchscript = False
test_resize_embeddings = False
class TransfoXLModelTest(unittest.TestCase):
class TransfoXLModelTester(object):
def __init__(self,
@@ -52,7 +58,6 @@ class TransfoXLModelTest(unittest.TestCase):
num_hidden_layers=5,
scope=None,
seed=1,
all_model_classes=(TransfoXLModel, TransfoXLLMHeadModel),
):
self.parent = parent
self.batch_size = batch_size
@@ -73,7 +78,6 @@ class TransfoXLModelTest(unittest.TestCase):
self.num_hidden_layers = num_hidden_layers
self.scope = scope
self.seed = seed
self.all_model_classes = all_model_classes
def prepare_config_and_inputs(self):
input_ids_1 = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
@@ -171,16 +175,31 @@ class TransfoXLModelTest(unittest.TestCase):
list(list(mem.size()) for mem in result["mems_2"]),
[[self.mem_len, self.batch_size, self.hidden_size]] * self.num_hidden_layers)
def create_and_check_transfo_xl_commons(self, config, input_ids_1, input_ids_2, lm_labels):
def prepare_config_and_inputs_for_common(self):
config_and_inputs = self.prepare_config_and_inputs()
(config, input_ids_1, input_ids_2, lm_labels) = config_and_inputs
inputs_dict = {'input_ids': input_ids_1}
create_and_check_commons(self, config, inputs_dict, test_pruning=False, test_torchscript=False)
return config, inputs_dict
def test_default(self):
self.run_tester(TransfoXLModelTest.TransfoXLModelTester(self))
def setUp(self):
self.model_tester = TransfoXLModelTest.TransfoXLModelTester(self)
self.config_tester = ConfigTester(self, config_class=TransfoXLConfig, d_embed=37)
def test_config(self):
config_tester = ConfigTester(self, config_class=TransfoXLConfig, d_embed=37)
config_tester.run_common_tests()
self.config_tester.run_common_tests()
def test_transfo_xl_model(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
output_result = self.model_tester.create_transfo_xl_model(*config_and_inputs)
self.model_tester.check_transfo_xl_model_output(output_result)
def test_transfo_xl_lm_head(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
output_result = self.model_tester.create_transfo_xl_lm_head(*config_and_inputs)
self.model_tester.check_transfo_xl_lm_head_output(output_result)
@pytest.mark.slow
def test_model_from_pretrained(self):
@@ -190,23 +209,6 @@ class TransfoXLModelTest(unittest.TestCase):
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
def run_tester(self, tester):
config_and_inputs = tester.prepare_config_and_inputs()
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
output_result = tester.create_transfo_xl_model(*config_and_inputs)
tester.check_transfo_xl_model_output(output_result)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
output_result = tester.create_transfo_xl_lm_head(*config_and_inputs)
tester.check_transfo_xl_lm_head_output(output_result)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_transfo_xl_commons(*config_and_inputs)
if __name__ == "__main__":
unittest.main()

51
pytorch_transformers/tests/modeling_xlm_test.py
View File

@@ -23,10 +23,15 @@ import pytest
from pytorch_transformers import (XLMConfig, XLMModel, XLMWithLMHeadModel, XLMForQuestionAnswering, XLMForSequenceClassification)
from pytorch_transformers.modeling_xlm import XLM_PRETRAINED_MODEL_ARCHIVE_MAP
from .modeling_common_test import (create_and_check_commons, ConfigTester, ids_tensor)
from .modeling_common_test import (CommonTestCases, ConfigTester, ids_tensor)
class XLMModelTest(unittest.TestCase):
class XLMModelTest(CommonTestCases.CommonModelTester):
all_model_classes = (XLMModel, XLMWithLMHeadModel,
XLMForQuestionAnswering, XLMForSequenceClassification)
# , XLMForSequenceClassification, XLMForTokenClassification),
class XLMModelTester(object):
def __init__(self,
@@ -58,8 +63,6 @@ class XLMModelTest(unittest.TestCase):
summary_type="last",
use_proj=True,
scope=None,
all_model_classes = (XLMModel, XLMWithLMHeadModel,
XLMForQuestionAnswering, XLMForSequenceClassification), # , XLMForSequenceClassification, XLMForTokenClassification),
):
self.parent = parent
self.batch_size = batch_size
@@ -90,7 +93,6 @@ class XLMModelTest(unittest.TestCase):
self.num_labels = num_labels
self.num_choices = num_choices
self.scope = scope
self.all_model_classes = all_model_classes
def prepare_config_and_inputs(self):
input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
@@ -237,28 +239,23 @@ class XLMModelTest(unittest.TestCase):
[self.batch_size, self.type_sequence_label_size])
def create_and_check_xlm_commons(self, config, input_ids, token_type_ids, input_lengths, sequence_labels, token_labels, is_impossible_labels, input_mask):
def prepare_config_and_inputs_for_common(self):
config_and_inputs = self.prepare_config_and_inputs()
(config, input_ids, token_type_ids, input_lengths,
sequence_labels, token_labels, is_impossible_labels, input_mask) = config_and_inputs
inputs_dict = {'input_ids': input_ids, 'token_type_ids': token_type_ids, 'lengths': input_lengths}
create_and_check_commons(self, config, inputs_dict)
return config, inputs_dict
def test_default(self):
self.run_tester(XLMModelTest.XLMModelTester(self))
def setUp(self):
self.model_tester = XLMModelTest.XLMModelTester(self)
self.config_tester = ConfigTester(self, config_class=XLMConfig, emb_dim=37)
def test_config(self):
config_tester = ConfigTester(self, config_class=XLMConfig, emb_dim=37)
config_tester.run_common_tests()
self.config_tester.run_common_tests()
@pytest.mark.slow
def test_model_from_pretrained(self):
cache_dir = "/tmp/pytorch_transformers_test/"
for model_name in list(XLM_PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
model = XLMModel.from_pretrained(model_name, cache_dir=cache_dir)
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
def run_tester(self, tester):
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlm_model(*config_and_inputs)
def test_xlm_model(self):
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_xlm_model(*config_and_inputs)
# config_and_inputs = tester.prepare_config_and_inputs()
# tester.create_and_check_xlm_for_masked_lm(*config_and_inputs)
@@ -275,8 +272,14 @@ class XLMModelTest(unittest.TestCase):
# config_and_inputs = tester.prepare_config_and_inputs()
# tester.create_and_check_xlm_for_token_classification(*config_and_inputs)
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlm_commons(*config_and_inputs)
@pytest.mark.slow
def test_model_from_pretrained(self):
cache_dir = "/tmp/pytorch_transformers_test/"
for model_name in list(XLM_PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
model = XLMModel.from_pretrained(model_name, cache_dir=cache_dir)
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
if __name__ == "__main__":
unittest.main()

71
pytorch_transformers/tests/modeling_xlnet_test.py
View File

@@ -28,9 +28,14 @@ import torch
from pytorch_transformers import (XLNetConfig, XLNetModel, XLNetLMHeadModel, XLNetForSequenceClassification, XLNetForQuestionAnswering)
from pytorch_transformers.modeling_xlnet import XLNET_PRETRAINED_MODEL_ARCHIVE_MAP
from .modeling_common_test import ConfigTester, create_and_check_commons, ids_tensor
from .modeling_common_test import ConfigTester, CommonTestCases, ids_tensor
class XLNetModelTest(CommonTestCases.CommonModelTester):
all_model_classes=(XLNetModel, XLNetLMHeadModel,
XLNetForSequenceClassification, XLNetForQuestionAnswering)
test_pruning = False
class XLNetModelTest(unittest.TestCase):
class XLNetModelTester(object):
def __init__(self,
@@ -56,8 +61,6 @@ class XLNetModelTest(unittest.TestCase):
initializer_range=0.05,
seed=1,
type_vocab_size=2,
all_model_classes=(XLNetModel, XLNetLMHeadModel,
XLNetForSequenceClassification, XLNetForQuestionAnswering),
):
self.parent = parent
self.batch_size = batch_size
@@ -82,7 +85,6 @@ class XLNetModelTest(unittest.TestCase):
self.seed = seed
self.type_vocab_size = type_vocab_size
self.type_sequence_label_size = type_sequence_label_size
self.all_model_classes = all_model_classes
def prepare_config_and_inputs(self):
input_ids_1 = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
@@ -264,17 +266,41 @@ class XLNetModelTest(unittest.TestCase):
list(list(mem.size()) for mem in result["mems_1"]),
[[self.seq_length, self.batch_size, self.hidden_size]] * self.num_hidden_layers)
def create_and_check_xlnet_commons(self, config, input_ids_1, input_ids_2, input_ids_q, perm_mask, input_mask,
target_mapping, inp_q, segment_ids, lm_labels, sequence_labels, is_impossible_labels):
def prepare_config_and_inputs_for_common(self):
config_and_inputs = self.prepare_config_and_inputs()
(config, input_ids_1, input_ids_2, input_ids_q, perm_mask, input_mask,
target_mapping, inp_q, segment_ids, lm_labels,
sequence_labels, is_impossible_labels) = config_and_inputs
inputs_dict = {'input_ids': input_ids_1}
create_and_check_commons(self, config, inputs_dict, test_pruning=False)
return config, inputs_dict
def test_default(self):
self.run_tester(XLNetModelTest.XLNetModelTester(self))
def setUp(self):
self.model_tester = XLNetModelTest.XLNetModelTester(self)
self.config_tester = ConfigTester(self, config_class=XLNetConfig, d_inner=37)
def test_config(self):
config_tester = ConfigTester(self, config_class=XLNetConfig, d_inner=37)
config_tester.run_common_tests()
self.config_tester.run_common_tests()
def test_xlnet_base_model(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_xlnet_base_model(*config_and_inputs)
def test_xlnet_lm_head(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_xlnet_lm_head(*config_and_inputs)
def test_xlnet_sequence_classif(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_xlnet_sequence_classif(*config_and_inputs)
def test_xlnet_qa(self):
self.model_tester.set_seed()
config_and_inputs = self.model_tester.prepare_config_and_inputs()
self.model_tester.create_and_check_xlnet_qa(*config_and_inputs)
@pytest.mark.slow
def test_model_from_pretrained(self):
@@ -284,27 +310,6 @@ class XLNetModelTest(unittest.TestCase):
shutil.rmtree(cache_dir)
self.assertIsNotNone(model)
def run_tester(self, tester):
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlnet_base_model(*config_and_inputs)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlnet_lm_head(*config_and_inputs)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlnet_sequence_classif(*config_and_inputs)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlnet_qa(*config_and_inputs)
tester.set_seed()
config_and_inputs = tester.prepare_config_and_inputs()
tester.create_and_check_xlnet_commons(*config_and_inputs)
if __name__ == "__main__":
unittest.main()