def create_model(args, vocab_size, device):
"""
Creates the classifier and encoder model.
"""
config_path = join(args.model_dir, 'config.json')
if not exists(config_path):
config = XLNetConfig.from_pretrained('xlnet-base-cased')
generator = XLNetGenerator(config)
generator.resize_token_embeddings(vocab_size)
config.save_pretrained(args.model_dir)
# TODO huggingface output bias layer is bugged
# if the size of the embeddings is modified
# reloading the model with new config
# fixes the problem
config = XLNetConfig.from_pretrained(args.model_dir)
generator = XLNetGenerator(config)
generator = generator.to(device)
return generator
def train(args, device):
args.dataset_name = "MNLI" # TODO: parametrize
model_name = args.model_name
log = get_train_logger(args)
SEED = 42
random.seed(SEED)
np.random.seed(SEED)
torch.manual_seed(SEED)
log.info(f'Using device {device}')
tokenizer = XLNetTokenizer.from_pretrained(model_name, do_lower_case=True)
xlnet_config = XLNetConfig.from_pretrained(
model_name,
output_hidden_states=True,
output_attentions=True,
num_labels=3,
finetuning_task=args.dataset_name)
model = XLNetForSequenceClassification.from_pretrained(model_name,
config=xlnet_config)
model.to(device)
# Load features from datasets
data_loader = MNLIDatasetReader(args, tokenizer, log)
train_file = os.path.join(args.base_path, args.train_file)
val_file = os.path.join(args.base_path, args.val_file)
train_dataloader = data_loader.load_train_dataloader(train_file)
val_dataloader = data_loader.load_val_dataloader(val_file)
trainer = TrainModel(train_dataloader, val_dataloader, log)
trainer.train(model, device, args)
def xlnet_feature_extractor(examples):
config = XLNetConfig.from_pretrained(model_name)
tokenizer = XLNetTokenizer.from_pretrained(model_name)
model = XLNetForFeatureExtraction(config)
# input_ids = torch.tensor(tokenizer.encode(utterance_list[0])).unsqueeze(0)# Batch size 1
features = convert_examples_to_features(
examples,
MAX_SEQ_LEN,
tokenizer,
cls_token_at_end=True, # xlnet has a cls token at the end
cls_token=tokenizer.cls_token,
sep_token=tokenizer.sep_token,
cls_token_segment_id=2 if True else 1,
pad_on_left=True, # pad on the left for xlnet
pad_token_segment_id=4 if True else 0)
input_ids_list = []
input_mask_list = []
segment_ids_list = []
for feature in features:
input_ids_list.append(feature.input_ids)
input_mask_list.append(feature.input_mask)
segment_ids_list.append(feature.segment_ids)
input_ids_tensor = torch.tensor(input_ids_list)
input_mask_tensor = torch.tensor(input_mask_list)
segment_ids_tensor = torch.tensor(segment_ids_list)
transformer_outputs = model(input_ids=input_ids_tensor,
attention_mask=input_mask_tensor,
token_type_ids=segment_ids_tensor)
feature = transformer_outputs[:, -1]
return feature
def validate(args, device_id, pt, step):
device = "cpu" if args.visible_gpus == '-1' else "cuda"
if pt != '':
test_from = pt
else:
test_from = args.test_from
logger.info('Loading checkpoint from %s' % test_from)
checkpoint = torch.load(test_from,
map_location=lambda storage, loc: storage)
opt = vars(checkpoint['opt'])
for k in opt.keys():
if k in model_flags:
setattr(args, k, opt[k])
print(args)
config = XLNetConfig.from_pretrained(args.config_path)
model = Summarizer(args,
device,
load_pretrained_bert=False,
bert_config=config)
model.load_cp(checkpoint)
model.eval()
valid_iter = Dataloader(args,
load_dataset(args, 'valid', shuffle=False),
args.batch_size,
device,
shuffle=False,
is_test=False)
trainer = build_trainer(args, device_id, model, None)
stats = trainer.validate(valid_iter, step)
return stats.xent()
def main():
torch.cuda.empty_cache()
parser = setup_parser()
args = parser.parse_args()
if os.path.exists(args.output_dir) and os.listdir(
args.output_dir
) and args.do_train and not args.overwrite_output_dir:
raise ValueError("Output directory already exists and is not empty.")
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
args.n_gpu = torch.cuda.device_count()
args.device = device
set_seed(args)
args.task_name = args.task_name.lower()
if args.task_name not in processors:
raise ValueError("Task not found: {}".format(args.task_name))
processor = processors[args.task_name]()
args.output_mode = output_modes[args.task_name]
label_list = processor.get_labels()
num_labels = len(label_list)
##Load Models
config = XLNetConfig.from_pretrained(args.config_name)
print('config: {}'.format(config))
tokenizer = XLNetTokenizer.from_pretrained(
args.text_encoder_checkpoint, do_lower_case=args.do_lower_case)
text_encoder = XLNetModel.from_pretrained(args.text_encoder_checkpoint,
config=config)
graph_encoder = GraphEncoder(args.n_hidden, args.min_score)
if args.graph_encoder_checkpoint:
graph_encoder.gcnnet.load_state_dict(
torch.load(args.graph_encoder_checkpoint))
medsts_classifier = PairClassifier(config.hidden_size + args.n_hidden, 1)
medsts_c_classifier = PairClassifier(config.hidden_size + args.n_hidden, 5)
medsts_type_classifier = PairClassifier(config.hidden_size + args.n_hidden,
4)
model = MedstsNet(text_encoder, graph_encoder, medsts_classifier,
medsts_c_classifier, medsts_type_classifier, config)
model.to(args.device)
args.n_gpu = 1
if args.do_train:
train_dataset = load_and_cache_examples(args,
args.task_name,
tokenizer,
evaluate=False)
global_step, tr_loss = train(args, train_dataset, model, tokenizer)
logger.info('global step = {}, average loss = {}'.format(
global_step, tr_loss))
if not os.path.exists(args.output_dir):
os.makedirs(args.output_dir)
logger.info("saving model checkpoint to {}".format(args.output_dir))
model_to_save = model.module if hasattr(model, 'module') else model
# model_to_save.save_pretrained(args.output_dir)
torch.save(model_to_save.state_dict(),
os.path.join(args.output_dir, 'saved_model.pth'))
tokenizer.save_pretrained(args.output_dir)
torch.save(args, os.path.join(args.output_dir, 'training_args.bin'))
def __init__(
self,
language=Language.ENGLISHCASED,
num_labels=5,
cache_dir=".",
num_gpus=None,
num_epochs=1,
batch_size=8,
lr=5e-5,
adam_eps=1e-8,
warmup_steps=0,
weight_decay=0.0,
max_grad_norm=1.0,
):
"""Initializes the classifier and the underlying pretrained model.
Args:
language (Language, optional): The pretrained model's language.
Defaults to 'xlnet-base-cased'.
num_labels (int, optional): The number of unique labels in the
training data. Defaults to 5.
cache_dir (str, optional): Location of XLNet's cache directory.
Defaults to ".".
num_gpus (int, optional): The number of gpus to use.
If None is specified, all available GPUs
will be used. Defaults to None.
num_epochs (int, optional): Number of training epochs.
Defaults to 1.
batch_size (int, optional): Training batch size. Defaults to 8.
lr (float): Learning rate of the Adam optimizer. Defaults to 5e-5.
adam_eps (float, optional): term added to the denominator to improve
numerical stability. Defaults to 1e-8.
warmup_steps (int, optional): Number of steps in which to increase
learning rate linearly from 0 to 1. Defaults to 0.
weight_decay (float, optional): Weight decay. Defaults to 0.
max_grad_norm (float, optional): Maximum norm for the gradients. Defaults to 1.0
"""
if num_labels < 2:
raise ValueError("Number of labels should be at least 2.")
self.language = language
self.num_labels = num_labels
self.cache_dir = cache_dir
self.num_gpus = num_gpus
self.num_epochs = num_epochs
self.batch_size = batch_size
self.lr = lr
self.adam_eps = adam_eps
self.warmup_steps = warmup_steps
self.weight_decay = weight_decay
self.max_grad_norm = max_grad_norm
# create classifier
self.config = XLNetConfig.from_pretrained(self.language.value,
num_labels=num_labels,
cache_dir=cache_dir)
self.model = XLNetForSequenceClassification(self.config)
def main():
if os.path.exists(args.output_dir) and os.listdir(args.output_dir) and args.do_train and not args.overwrite_output_dir:
raise ValueError("Output directory ({}) already exists and is not empty. Use --overwrite_output_dir to overcome.".format(args.output_dir))
# Setup distant debugging if needed
if args.server_ip and args.server_port:
# Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
import ptvsd
print("Waiting for debugger attach")
ptvsd.enable_attach(address=(args.server_ip, args.server_port), redirect_output=True)
ptvsd.wait_for_attach()
# ------------------判断CUDA模式----------------------
# Setup CUDA, GPU & distributed training
if args.local_rank == -1 or args.no_cuda:
device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
n_gpu = torch.cuda.device_count()
else: # Initializes the distributed backend which will take care of sychronizing nodes/GPUs
torch.cuda.set_device(args.local_rank)
device = torch.device("cuda", args.local_rank)
torch.distributed.init_process_group(backend='nccl')
n_gpu = 1
#produce data
train_batch_size = args.per_gpu_train_batch_size * max(1, n_gpu)
eval_batch_size = args.per_gpu_eval_batch_size * max(1, n_gpu)
train_iter = load_and_cache_examples(mode='train',train_batch_size=train_batch_size,
eval_batch_size=eval_batch_size)
eval_iter = load_and_cache_examples(mode='dev',
train_batch_size=train_batch_size,
eval_batch_size=eval_batch_size)
#epoch_size = num_train_steps * train_batch_size * args.gradient_accumulation_steps / args.num_train_epochs
# pbar = ProgressBar(epoch_size=epoch_size,
# batch_size=train_batch_size)
if args.model_type == 'bert':
model = Bert_SenAnalysis.from_pretrained(args.bert_model, num_tag = len(args.labels))
elif args.model_type == 'xlnet':
config = XLNetConfig.from_pretrained(args.xlnet_model, num_labels = len(args.labels))
model = XLNet_SenAnalysis.from_pretrained(args.xlnet_model, config=config)
for name, param in model.named_parameters():
if param.requires_grad:
print(name)
train_iter = cycle(train_iter)
fit(model = model,
training_iter=train_iter,
eval_iter=eval_iter,
#train_steps=args.train_steps,
#pbar=pbar,
num_train_steps=args.train_steps,#num_train_steps,
device=device,
n_gpu=n_gpu,
verbose=1)
def __init__(
self,
gpu=-1,
check_for_lowercase=True,
embeddings_dim=0,
verbose=True,
path_to_pretrained="xlnet-base-cased",
model_frozen=True,
bos_token="<s>",
eos_token="</s>",
unk_token="<unk>",
sep_token="<sep>",
pad_token="<pad>",
cls_token="<cls>",
mask_token="<mask>",
):
SeqIndexerBaseEmbeddings.__init__(
self,
gpu=gpu,
check_for_lowercase=check_for_lowercase,
zero_digits=True,
bos_token=bos_token,
eos_token=eos_token,
pad=pad_token,
unk=unk_token,
sep_token=sep_token,
cls_token=cls_token,
mask_token=mask_token,
load_embeddings=True,
embeddings_dim=embeddings_dim,
verbose=verbose,
isBert=False,
isXlNet=True)
print("create seq indexer Transformers from Model {}".format(
path_to_pretrained))
self.xlnet = True
self.path_to_pretrained = path_to_pretrained
self.tokenizer = XLNetTokenizer.from_pretrained(path_to_pretrained)
self.config = XLNetConfig.from_pretrained(path_to_pretrained)
self.emb = XLNetModel.from_pretrained(path_to_pretrained)
self.frozen = model_frozen
for param in self.emb.parameters():
param.requires_grad = False
for elem in [
self.emb.word_embedding, self.emb.layer, self.emb.dropout
]:
for param in elem.parameters():
param.requires_grad = False
if (not self.frozen):
for param in self.emb.pooler.parameters():
param.requires_grad = True
self.emb.eval()
print("XLNET model loaded succesifully")
def run(args):
nli_model_path = 'saved_models/xlnet-base-cased/'
model_file = os.path.join(nli_model_path, 'pytorch_model.bin')
config_file = os.path.join(nli_model_path, 'config.json')
log = get_logger('conduct_test')
model_name = 'xlnet-base-cased'
tokenizer = XLNetTokenizer.from_pretrained(model_name, do_lower_case=True)
xlnet_config = XLNetConfig.from_pretrained(config_file)
model = XLNetForSequenceClassification.from_pretrained(model_file,
config=xlnet_config)
dataset_reader = ConductDatasetReader(args, tokenizer, log)
file_lines = dataset_reader.get_file_lines('data/dados.tsv')
results = []
softmax_fn = torch.nn.Softmax(dim=1)
model.eval()
with torch.no_grad():
for line in tqdm(file_lines):
premise, hypothesys, conflict = dataset_reader.parse_line(line)
pair_word_ids, input_mask, pair_segment_ids = dataset_reader.convert_text_to_features(
premise, hypothesys)
tensor_word_ids = torch.tensor([pair_word_ids],
dtype=torch.long,
device=args.device)
tensor_input_mask = torch.tensor([input_mask],
dtype=torch.long,
device=args.device)
tensor_segment_ids = torch.tensor([pair_segment_ids],
dtype=torch.long,
device=args.device)
model_input = {
'input_ids': tensor_word_ids, # word ids
'attention_mask': tensor_input_mask, # input mask
'token_type_ids': tensor_segment_ids
}
outputs = model(**model_input)
logits = outputs[0]
nli_scores, nli_class = get_scores_and_class(logits, softmax_fn)
nli_scores = nli_scores.detach().cpu().numpy()
results.append({
"conduct": premise,
"complaint": hypothesys,
"nli_class": nli_class,
"nli_contradiction_score": nli_scores[0],
"nli_entailment_score": nli_scores[1],
"nli_neutral_score": nli_scores[2],
"conflict": conflict
})
df = pd.DataFrame(results)
df.to_csv('results/final_results.tsv', sep='\t', index=False)
def load(cls,
config_path: Path,
model_path: Path,
cache_model: bool = True) -> XLNetModel:
if model_path in cls._cache:
return PretrainedXLNetModel._cache[str(model_path)]
config = XLNetConfig.from_pretrained(str(config_path))
model = XLNetModel.from_pretrained(str(model_path), config=config)
if cache_model:
cls._cache[str(model_path)] = model
return model
def load_model(output_dir, model_type):
# Load a trained model that you have fine-tuned
output_model_file = os.path.join(output_dir, "pytorch_model.bin")
model_state_dict = torch.load(output_model_file)
if model_type == 'bert':
model = Bert_SenAnalysis.from_pretrained(args.bert_model,
state_dict=model_state_dict,
num_tag=len(args.labels))
elif model_type == 'xlnet':
config = XLNetConfig.from_pretrained(args.xlnet_model,
num_labels=len(args.labels))
model = XLNet_SenAnalysis.from_pretrained(args.xlnet_model,
config=config)
return model
def __init__(self, args, dictionary, embed_tokens, left_pad=True):
super().__init__(dictionary)
self.dropout = args.dropout
self.n_gpu = torch.cuda.device_count()
print('Distributed rank: ', args.distributed_rank)
print('Number of used GPU: ', self.n_gpu)
# if self.n_gpu > 1:
# torch.distributed.barrier()
if args.distributed_rank not in [-1, 0]:
torch.distributed.barrier(
) # Make sure only the first process in distributed training will download model & vocab
# Load pre-trained model (weights)
config = XLNetConfig.from_pretrained(args.xlnet_model)
self.xlnet = XLNetModel.from_pretrained(args.xlnet_model,
config=config)
if args.distributed_rank == 0:
torch.distributed.barrier(
) # Make sure only the first process in distributed training will download model & vocab
embed_dim = embed_tokens.embedding_dim
self.padding_idx = embed_tokens.padding_idx
self.max_source_positions = args.max_source_positions
self.embed_tokens = embed_tokens
self.embed_scale = math.sqrt(embed_dim)
self.embed_positions = PositionalEmbedding(
args.max_source_positions,
embed_dim,
self.padding_idx,
left_pad=left_pad,
learned=args.encoder_learned_pos,
) if not args.no_token_positional_embeddings else None
self.layers = nn.ModuleList([])
self.layers.extend([
TransformerEncoderLayer(args) for i in range(args.encoder_layers)
])
self.register_buffer('version', torch.Tensor([2]))
self.normalize = args.encoder_normalize_before
if self.normalize:
self.layer_norm = LayerNorm(embed_dim)
def init_params(self, model_name, pre_trained_model, f_lr=5e-5, f_eps = 1e-8):
MODEL_CLASSES = { "xlnet": (XLNetConfig, XLNetForQuestionAnswering, XLNetTokenizer) }
# self._config, self._model_class, self._tokenizer = MODEL_CLASSES[model_name]
self._tokenizer = XLNetTokenizer.from_pretrained(pre_trained_model, do_lower_case=True)
self._config = XLNetConfig.from_pretrained(pre_trained_model, do_lower_case=True)
self._model = XLNetForQuestionAnswering.from_pretrained(pre_trained_model, config=self._config)
self._model.to(self._device)
no_decay = ['bias', 'LayerNorm.weight']
weight_decay = 0.0 # Author's default parameter
optimizer_grouped_parameters = [
{'params': [p for n, p in self._model.named_parameters() \
if not any(nd in n for nd in no_decay)], 'weight_decay': weight_decay},
{'params': [p for n, p in self._model.named_parameters() \
if any(nd in n for nd in no_decay)], 'weight_decay': 0.0}
]
# warmup_steps = 0.0
self._optimizer = AdamW(optimizer_grouped_parameters, lr=f_lr, eps=f_eps)
def __init__(self, args, task_name, weight_file=None, config_file=None):
self.args = args
self.device = args.device
self.log = self.get_train_logger(args, task_name)
self.softmax = Softmax(dim=1)
self.tokenizer = XLNetTokenizer.from_pretrained(args.model_name,
do_lower_case=True)
self.dataset_reader = init_dataset_reader(task_name, args,
self.tokenizer, self.log)
config = args.model_name if config_file is None else config_file
model_weights = args.model_name if weight_file is None else weight_file
xlnet_config = XLNetConfig.from_pretrained(config,
output_hidden_states=True,
output_attentions=True,
num_labels=3,
finetuning_task=task_name)
model = XLNetForSequenceClassification.from_pretrained(
model_weights, config=xlnet_config)
self.model = model.to(args.device)
def validate_on_test_set(args, device):
log = get_logger(f"test-results")
SEED = 42
random.seed(SEED)
np.random.seed(SEED)
torch.manual_seed(SEED)
log.info(f'Using device {device}')
model_name = 'xlnet-base-cased'
tokenizer = XLNetTokenizer.from_pretrained(model_name, do_lower_case=True)
xlnet_config = XLNetConfig.from_pretrained(args.config_file)
data_reader = KaggleMNLIDatasetReader(args, tokenizer, log)
model = XLNetForSequenceClassification.from_pretrained(args.model_file, config=xlnet_config)
model.to(device)
if args.n_gpu > 1:
model = torch.nn.DataParallel(model)
log.info(f'Running on {args.n_gpu} GPUS')
test_executor = KaggleTest(tokenizer, log, data_reader)
write_kaggle_results("matched", args.test_matched_file, test_executor, device, model)
write_kaggle_results("mismatched", args.test_mismatched_file, test_executor, device, model)
def main(_):
if FLAGS.server_ip and FLAGS.server_port:
# Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
import ptvsd
print("Waiting for debugger attach")
ptvsd.enable_attach(address=(FLAGS.server_ip, FLAGS.server_port),
redirect_output=True)
ptvsd.wait_for_attach()
tf.set_random_seed(FLAGS.seed)
np.random.seed(FLAGS.seed)
tf.logging.set_verbosity(tf.logging.INFO)
#### Validate flags
if FLAGS.save_steps is not None:
FLAGS.log_step_count_steps = min(FLAGS.log_step_count_steps,
FLAGS.save_steps)
if FLAGS.do_predict:
predict_dir = FLAGS.predict_dir
if not tf.gfile.Exists(predict_dir):
tf.gfile.MakeDirs(predict_dir)
processors = {
"mnli_matched": MnliMatchedProcessor,
"mnli_mismatched": MnliMismatchedProcessor,
'sts-b': StsbProcessor,
'imdb': ImdbProcessor,
"yelp5": Yelp5Processor
}
if not FLAGS.do_train and not FLAGS.do_eval and not FLAGS.do_predict:
raise ValueError(
"At least one of `do_train`, `do_eval, `do_predict` or "
"`do_submit` must be True.")
if not tf.gfile.Exists(FLAGS.output_dir):
tf.gfile.MakeDirs(FLAGS.output_dir)
if not tf.gfile.Exists(FLAGS.model_dir):
tf.gfile.MakeDirs(FLAGS.model_dir)
# ########################### LOAD PT model
# ########################### LOAD PT model
# import torch
# from pytorch_transformers import CONFIG_NAME, TF_WEIGHTS_NAME, XLNetTokenizer, XLNetConfig, XLNetForSequenceClassification
# save_path = os.path.join(FLAGS.model_dir, TF_WEIGHTS_NAME)
# tf.logging.info("Model loaded from path: {}".format(save_path))
# device = torch.device("cuda", 4)
# config = XLNetConfig.from_pretrained('xlnet-large-cased', finetuning_task=u'sts-b')
# config_path = os.path.join(FLAGS.model_dir, CONFIG_NAME)
# config.to_json_file(config_path)
# pt_model = XLNetForSequenceClassification.from_pretrained(FLAGS.model_dir, from_tf=True, num_labels=1)
# pt_model.to(device)
# pt_model = torch.nn.DataParallel(pt_model, device_ids=[4, 5, 6, 7])
# from torch.optim import Adam
# optimizer = Adam(pt_model.parameters(), lr=0.001, betas=(0.9, 0.999),
# eps=FLAGS.adam_epsilon, weight_decay=FLAGS.weight_decay,
# amsgrad=False)
# ########################### LOAD PT model
# ########################### LOAD PT model
task_name = FLAGS.task_name.lower()
if task_name not in processors:
raise ValueError("Task not found: %s" % (task_name))
processor = processors[task_name]()
label_list = processor.get_labels() if not FLAGS.is_regression else None
sp = spm.SentencePieceProcessor()
sp.Load(FLAGS.spiece_model_file)
def tokenize_fn(text):
text = preprocess_text(text, lower=FLAGS.uncased)
return encode_ids(sp, text)
# run_config = model_utils.configure_tpu(FLAGS)
# model_fn = get_model_fn(len(label_list) if label_list is not None else None)
spm_basename = os.path.basename(FLAGS.spiece_model_file)
# If TPU is not available, this will fall back to normal Estimator on CPU
# or GPU.
# estimator = tf.estimator.Estimator(
# model_fn=model_fn,
# config=run_config)
if FLAGS.do_train:
train_file_base = "{}.len-{}.train.tf_record".format(
spm_basename, FLAGS.max_seq_length)
train_file = os.path.join(FLAGS.output_dir, train_file_base)
tf.logging.info("Use tfrecord file {}".format(train_file))
train_examples = processor.get_train_examples(FLAGS.data_dir)
tf.logging.info("Num of train samples: {}".format(len(train_examples)))
file_based_convert_examples_to_features(train_examples, label_list,
FLAGS.max_seq_length,
tokenize_fn, train_file,
FLAGS.num_passes)
train_input_fn = file_based_input_fn_builder(
input_file=train_file,
seq_length=FLAGS.max_seq_length,
is_training=True,
drop_remainder=True)
# estimator.train(input_fn=train_input_fn, max_steps=FLAGS.train_steps)
##### Create input tensors / placeholders
bsz_per_core = FLAGS.train_batch_size // FLAGS.num_core_per_host
params = {
"batch_size": FLAGS.train_batch_size # the whole batch
}
train_set = train_input_fn(params)
example = train_set.make_one_shot_iterator().get_next()
if FLAGS.num_core_per_host > 1:
examples = [{} for _ in range(FLAGS.num_core_per_host)]
for key in example.keys():
vals = tf.split(example[key], FLAGS.num_core_per_host, 0)
for device_id in range(FLAGS.num_core_per_host):
examples[device_id][key] = vals[device_id]
else:
examples = [example]
##### Create computational graph
tower_losses, tower_grads_and_vars, tower_inputs, tower_hidden_states, tower_logits = [], [], [], [], []
for i in range(FLAGS.num_core_per_host):
reuse = True if i > 0 else None
with tf.device(assign_to_gpu(i, "/gpu:0")), \
tf.variable_scope(tf.get_variable_scope(), reuse=reuse):
loss_i, grads_and_vars_i, inputs_i, hidden_states_i, logits_i = single_core_graph(
is_training=True,
features=examples[i],
label_list=label_list)
tower_losses.append(loss_i)
tower_grads_and_vars.append(grads_and_vars_i)
tower_inputs.append(inputs_i)
tower_hidden_states.append(hidden_states_i)
tower_logits.append(logits_i)
## average losses and gradients across towers
if len(tower_losses) > 1:
loss = tf.add_n(tower_losses) / len(tower_losses)
grads_and_vars = average_grads_and_vars(tower_grads_and_vars)
inputs = dict((n, tf.concat([t[n] for t in tower_inputs], 0))
for n in tower_inputs[0])
hidden_states = list(
tf.concat(t, 0) for t in zip(*tower_hidden_states))
logits = tf.concat(tower_logits, 0)
else:
loss = tower_losses[0]
grads_and_vars = tower_grads_and_vars[0]
inputs = tower_inputs[0]
hidden_states = tower_hidden_states[0]
logits = tower_logits[0]
# Summaries
merged = tf.summary.merge_all()
## get train op
train_op, learning_rate, gnorm = model_utils.get_train_op(
FLAGS, None, grads_and_vars=grads_and_vars)
global_step = tf.train.get_global_step()
##### Training loop
saver = tf.train.Saver(max_to_keep=FLAGS.max_save)
gpu_options = tf.GPUOptions(allow_growth=True)
#### load pretrained models
model_utils.init_from_checkpoint(FLAGS, global_vars=True)
writer = tf.summary.FileWriter(logdir=FLAGS.model_dir,
graph=tf.get_default_graph())
with tf.Session(config=tf.ConfigProto(
allow_soft_placement=True, gpu_options=gpu_options)) as sess:
sess.run(tf.global_variables_initializer())
#########
##### PYTORCH
import torch
from torch.optim import Adam
from pytorch_transformers import CONFIG_NAME, TF_WEIGHTS_NAME, WEIGHTS_NAME, XLNetTokenizer, XLNetConfig, XLNetForSequenceClassification, BertAdam
save_path = os.path.join(FLAGS.model_dir, TF_WEIGHTS_NAME + '-00')
saver.save(sess, save_path)
tf.logging.info("Model saved in path: {}".format(save_path))
device = torch.device("cuda", 4)
config = XLNetConfig.from_pretrained('xlnet-large-cased',
finetuning_task=u'sts-b',
num_labels=1)
tokenizer = XLNetTokenizer.from_pretrained('xlnet-large-cased')
# pt_model = XLNetForSequenceClassification.from_pretrained('xlnet-large-cased', num_labels=1)
pt_model = XLNetForSequenceClassification.from_pretrained(
save_path, from_tf=True, config=config)
pt_model.to(device)
pt_model = torch.nn.DataParallel(pt_model, device_ids=[4, 5, 6, 7])
optimizer = Adam(pt_model.parameters(),
lr=0.001,
betas=(0.9, 0.999),
eps=FLAGS.adam_epsilon,
weight_decay=FLAGS.weight_decay,
amsgrad=False)
# optimizer = BertAdam(pt_model.parameters(), lr=FLAGS.learning_rate, t_total=FLAGS.train_steps, warmup=FLAGS.warmup_steps / FLAGS.train_steps,
# eps=FLAGS.adam_epsilon, weight_decay=FLAGS.weight_decay)
##### PYTORCH
#########
fetches = [
loss, global_step, gnorm, learning_rate, train_op, merged,
inputs, hidden_states, logits
]
total_loss, total_loss_pt, prev_step, gnorm_pt = 0., 0., -1, 0.0
total_logits = None
total_labels = None
while True:
feed_dict = {}
# for i in range(FLAGS.num_core_per_host):
# for key in tower_mems_np[i].keys():
# for m, m_np in zip(tower_mems[i][key], tower_mems_np[i][key]):
# feed_dict[m] = m_np
fetched = sess.run(fetches)
loss_np, curr_step, gnorm_np, learning_rate_np, _, summary_np, inputs_np, hidden_states_np, logits_np = fetched
total_loss += loss_np
if total_logits is None:
total_logits = logits_np
total_labels = inputs_np['label_ids']
else:
total_logits = np.append(total_logits, logits_np, axis=0)
total_labels = np.append(total_labels,
inputs_np['label_ids'],
axis=0)
#########
##### PYTORCH
f_inp = torch.tensor(inputs_np["input_ids"],
dtype=torch.long,
device=device)
f_seg_id = torch.tensor(inputs_np["segment_ids"],
dtype=torch.long,
device=device)
f_inp_mask = torch.tensor(inputs_np["input_mask"],
dtype=torch.float,
device=device)
f_label = torch.tensor(inputs_np["label_ids"],
dtype=torch.float,
device=device)
# with torch.no_grad():
# _, hidden_states_pt, _ = pt_model.transformer(f_inp, f_seg_id, f_inp_mask)
# logits_pt, _ = pt_model(f_inp, token_type_ids=f_seg_id, input_mask=f_inp_mask)
pt_model.train()
outputs = pt_model(f_inp,
token_type_ids=f_seg_id,
input_mask=f_inp_mask,
labels=f_label)
loss_pt = outputs[0]
loss_pt = loss_pt.mean()
total_loss_pt += loss_pt.item()
# # hidden_states_pt = list(t.detach().cpu().numpy() for t in hidden_states_pt)
# # special_pt = special_pt.detach().cpu().numpy()
# # Optimizer pt
pt_model.zero_grad()
loss_pt.backward()
gnorm_pt = torch.nn.utils.clip_grad_norm_(
pt_model.parameters(), FLAGS.clip)
for param_group in optimizer.param_groups:
param_group['lr'] = learning_rate_np
optimizer.step()
##### PYTORCH
#########
if curr_step > 0 and curr_step % FLAGS.log_step_count_steps == 0:
curr_loss = total_loss / (curr_step - prev_step)
curr_loss_pt = total_loss_pt / (curr_step - prev_step)
tf.logging.info(
"[{}] | gnorm {:.2f} lr {:8.6f} "
"| loss {:.2f} | pplx {:>7.2f}, bpc {:>7.4f}".format(
curr_step, gnorm_np, learning_rate_np, curr_loss,
math.exp(curr_loss), curr_loss / math.log(2)))
#########
##### PYTORCH
tf.logging.info(
" PT [{}] | gnorm PT {:.2f} lr PT {:8.6f} "
"| loss PT {:.2f} | pplx PT {:>7.2f}, bpc PT {:>7.4f}".
format(curr_step, gnorm_pt, learning_rate_np,
curr_loss_pt, math.exp(curr_loss_pt),
curr_loss_pt / math.log(2)))
##### PYTORCH
#########
total_loss, total_loss_pt, prev_step = 0., 0., curr_step
writer.add_summary(summary_np, global_step=curr_step)
if curr_step > 0 and curr_step % FLAGS.save_steps == 0:
save_path = os.path.join(FLAGS.model_dir,
"model.ckpt-{}".format(curr_step))
saver.save(sess, save_path)
tf.logging.info(
"Model saved in path: {}".format(save_path))
#########
##### PYTORCH
# Save a trained model, configuration and tokenizer
model_to_save = pt_model.module if hasattr(
pt_model,
'module') else pt_model # Only save the model it-self
# If we save using the predefined names, we can load using `from_pretrained`
output_dir = os.path.join(
FLAGS.output_dir, "pytorch-ckpt-{}".format(curr_step))
if not tf.gfile.Exists(output_dir):
tf.gfile.MakeDirs(output_dir)
model_to_save.save_pretrained(output_dir)
tokenizer.save_pretrained(output_dir)
tf.logging.info(
"PyTorch Model saved in path: {}".format(output_dir))
##### PYTORCH
#########
if curr_step >= FLAGS.train_steps:
break
if FLAGS.do_eval:
# TPU requires a fixed batch size for all batches, therefore the number
# of examples must be a multiple of the batch size, or else examples
# will get dropped. So we pad with fake examples which are ignored
# later on. These do NOT count towards the metric (all tf.metrics
# support a per-instance weight, and these get a weight of 0.0).
#
# Modified in XL: We also adopt the same mechanism for GPUs.
while len(eval_examples) % FLAGS.eval_batch_size != 0:
eval_examples.append(PaddingInputExample())
eval_file_base = "{}.len-{}.{}.eval.tf_record".format(
spm_basename, FLAGS.max_seq_length, FLAGS.eval_split)
eval_file = os.path.join(FLAGS.output_dir, eval_file_base)
file_based_convert_examples_to_features(eval_examples, label_list,
FLAGS.max_seq_length,
tokenize_fn, eval_file)
assert len(eval_examples) % FLAGS.eval_batch_size == 0
eval_steps = int(len(eval_examples) // FLAGS.eval_batch_size)
eval_input_fn = file_based_input_fn_builder(
input_file=eval_file,
seq_length=FLAGS.max_seq_length,
is_training=False,
drop_remainder=True)
with tf.Session(config=tf.ConfigProto(
allow_soft_placement=True, gpu_options=gpu_options)) as sess:
sess.run(tf.global_variables_initializer())
########################### LOAD PT model
# import torch
# from pytorch_transformers import CONFIG_NAME, TF_WEIGHTS_NAME, WEIGHTS_NAME, XLNetTokenizer, XLNetConfig, XLNetForSequenceClassification, BertAdam
# save_path = os.path.join(FLAGS.model_dir, TF_WEIGHTS_NAME)
# saver.save(sess, save_path)
# tf.logging.info("Model saved in path: {}".format(save_path))
# device = torch.device("cuda", 4)
# config = XLNetConfig.from_pretrained('xlnet-large-cased', finetuning_task=u'sts-b', num_labels=1)
# tokenizer = XLNetTokenizer.from_pretrained('xlnet-large-cased')
# config_path = os.path.join(FLAGS.model_dir, CONFIG_NAME)
# config.to_json_file(config_path)
# # pt_model = XLNetForSequenceClassification.from_pretrained('xlnet-large-cased', num_labels=1)
# pt_model = XLNetForSequenceClassification.from_pretrained(FLAGS.model_dir, from_tf=True)
# pt_model.to(device)
# pt_model = torch.nn.DataParallel(pt_model, device_ids=[4, 5, 6, 7])
# from torch.optim import Adam
# optimizer = Adam(pt_model.parameters(), lr=0.001, betas=(0.9, 0.999),
# eps=FLAGS.adam_epsilon, weight_decay=FLAGS.weight_decay,
# amsgrad=False)
# optimizer = BertAdam(pt_model.parameters(), lr=FLAGS.learning_rate, t_total=FLAGS.train_steps, warmup=FLAGS.warmup_steps / FLAGS.train_steps,
# eps=FLAGS.adam_epsilon, weight_decay=FLAGS.weight_decay)
##### PYTORCH
#########
fetches = [
loss, global_step, gnorm, learning_rate, train_op, merged,
inputs, hidden_states, logits
]
total_loss, total_loss_pt, prev_step, gnorm_pt = 0., 0., -1, 0.0
total_logits = None
total_labels = None
while True:
feed_dict = {}
# for i in range(FLAGS.num_core_per_host):
# for key in tower_mems_np[i].keys():
# for m, m_np in zip(tower_mems[i][key], tower_mems_np[i][key]):
# feed_dict[m] = m_np
fetched = sess.run(fetches)
loss_np, curr_step, gnorm_np, learning_rate_np, _, summary_np, inputs_np, hidden_states_np, logits_np = fetched
total_loss += loss_np
if total_logits is None:
total_logits = logits_np
total_labels = inputs_np['label_ids']
else:
total_logits = np.append(total_logits, logits_np, axis=0)
total_labels = np.append(total_labels,
inputs_np['label_ids'],
axis=0)