def __init__(self, args, dictionary, left_pad=False):
super().__init__(dictionary)
self.dropout = args.dropout
from pytorch_transformers import RobertaModel, BertModel
from pytorch_transformers.file_utils import PYTORCH_TRANSFORMERS_CACHE
from pytorch_transformers import RobertaConfig, RobertaTokenizer, BertConfig, BertTokenizer
if args.pretrained_bert_model.startswith('roberta'):
self.embed = RobertaModel.from_pretrained(
args.pretrained_bert_model,
cache_dir=PYTORCH_TRANSFORMERS_CACHE /
'distributed_{}'.format(args.distributed_rank))
# self.context = RobertaModel.from_pretrained(args.pretrained_bert_model,
# cache_dir=PYTORCH_TRANSFORMERS_CACHE / 'distributed_{}'.format(args.distributed_rank))
self.config = RobertaConfig.from_pretrained(
args.pretrained_bert_model)
self.tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
else:
self.embed = BertModel.from_pretrained(
args.pretrained_bert_model,
cache_dir=PYTORCH_TRANSFORMERS_CACHE /
'distributed_{}'.format(args.distributed_rank))
# self.context = BertModel.from_pretrained(args.pretrained_bert_model,
# cache_dir=PYTORCH_TRANSFORMERS_CACHE / 'distributed_{}'.format(args.distributed_rank))
self.config = BertConfig.from_pretrained(
args.pretrained_bert_model)
self.tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
self.padding_idx = self.tokenizer.convert_tokens_to_ids(
self.tokenizer.pad_token)
def _roberta(self, text, unit="text"):
"""
ex)
"""
if self.bpe_tokenizer is None:
vocab_path = self.data_handler.read(self.config["vocab_path"],
return_path=True)
merges_path = self.data_handler.read(self.config["merges_path"],
return_path=True)
del self.config["vocab_path"]
del self.config["merges_path"]
self.bpe_tokenizer = RobertaTokenizer(vocab_path, merges_path,
**self.config)
return self.bpe_tokenizer._tokenize(text)
def get_tokenizer(tokenizer_name):
log.info(f"\tLoading Tokenizer {tokenizer_name}")
if tokenizer_name.startswith("bert-"):
do_lower_case = tokenizer_name.endswith("uncased")
tokenizer = BertTokenizer.from_pretrained(tokenizer_name, do_lower_case=do_lower_case)
elif tokenizer_name.startswith("roberta-"):
tokenizer = RobertaTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("xlnet-"):
do_lower_case = tokenizer_name.endswith("uncased")
tokenizer = XLNetTokenizer.from_pretrained(tokenizer_name, do_lower_case=do_lower_case)
elif tokenizer_name.startswith("openai-gpt"):
tokenizer = OpenAIGPTTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("gpt2"):
tokenizer = GPT2Tokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("transfo-xl-"):
# TransformerXL is trained on data pretokenized with MosesTokenizer
tokenizer = MosesTokenizer()
elif tokenizer_name.startswith("xlm-"):
tokenizer = XLMTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name == "MosesTokenizer":
tokenizer = MosesTokenizer()
elif tokenizer_name == "SplitChars":
tokenizer = SplitCharsTokenizer()
elif tokenizer_name == "":
tokenizer = SpaceTokenizer()
else:
tokenizer = None
return tokenizer
def __init__(self, pretrain_path, max_length):
nn.Module.__init__(self)
self.bert = RobertaForSequenceClassification.from_pretrained(pretrain_path, num_labels=2)
#self.bert = RobertaModel.from_pretrained(pretrain_path)
self.max_length = max_length
self.tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
self.modelName = 'Roberta'
class BPETokenizer(Tokenizer):
"""
BPTE(Byte-Pair Encoding) Tokenizer
text -> ...
* Args:
name: tokenizer name [roberta]
"""
def __init__(self, name, config={}):
super(BPETokenizer, self).__init__(name, f"bpe-{name}")
self.data_handler = DataHandler(CachePath.VOCAB)
self.config = config
self.bpe_tokenizer = None
""" Tokenizers """
def _roberta(self, text, unit="text"):
"""
ex)
"""
if self.bpe_tokenizer is None:
vocab_path = self.data_handler.read(self.config["vocab_path"],
return_path=True)
merges_path = self.data_handler.read(self.config["merges_path"],
return_path=True)
del self.config["vocab_path"]
del self.config["merges_path"]
self.bpe_tokenizer = RobertaTokenizer(vocab_path, merges_path,
**self.config)
return self.bpe_tokenizer._tokenize(text)
def check_iterator(pretrained_model, file, max_seq_length=None):
batch_size = 10
name = pretrained_model.split('-')[0].lower()
tokenizer = RobertaTokenizer.from_pretrained(
pretrained_model
) if name == 'roberta' else BertTokenizer.from_pretrained(
pretrained_model)
reader = BertNLIDatasetReader(pretrained_model,
lazy=True,
percent_data=0.001,
max_seq_length=max_seq_length)
iterator = BasicIterator(batch_size=batch_size,
max_instances_in_memory=10000)
for batch_dict in iterator(reader.read(file), num_epochs=1):
assert batch_dict['input_ids'].size(
) == batch_dict['token_type_ids'].size(
) == batch_dict['attention_mask'].size()
for idx in range(batch_dict['input_ids'].size(0)):
input_ids = batch_dict['input_ids'][idx].numpy().tolist()
token_type_ids = batch_dict['token_type_ids'][idx]
attention_mask = batch_dict['attention_mask'][idx]
premise = batch_dict['metadata'][idx]['premise_tokens']
hypothesis = batch_dict['metadata'][idx][
'hypothesis_tokens']
num_extra_tokens = 3 if name == 'bert' else 4
num_input_ids = len(premise) + len(
hypothesis) + num_extra_tokens
# Check input ids
if name == 'bert':
assert input_ids[:
num_input_ids] == tokenizer.convert_tokens_to_ids(
['[CLS]'] + premise + ['[SEP]'] +
hypothesis + ['[SEP]'])
segment_divide = len(premise) + 2
assert input_ids[:segment_divide][-1] == 102
assert torch.sum(token_type_ids[:segment_divide]) == 0
assert torch.sum(
token_type_ids[segment_divide:num_input_ids]
) == num_input_ids - segment_divide
assert torch.sum(token_type_ids[num_input_ids:]) == 0
else:
assert input_ids[:
num_input_ids] == tokenizer.convert_tokens_to_ids(
['<s>'] + premise + ['</s>'] * 2 +
hypothesis + ['</s>'])
# Check attention mask
assert torch.sum(
attention_mask[:num_input_ids]).item() == num_input_ids
assert torch.sum(
attention_mask[num_input_ids:]).item() == 0
def __init__(self, model_name_or_path: str, max_seq_length: int = 128, do_lower_case: bool = True):
super(RoBERTa, self).__init__()
self.config_keys = ['max_seq_length', 'do_lower_case']
self.max_seq_length = max_seq_length
self.do_lower_case = do_lower_case
self.roberta = RobertaModel.from_pretrained(model_name_or_path)
self.tokenizer = RobertaTokenizer.from_pretrained(model_name_or_path, do_lower_case=do_lower_case)
self.cls_token_id = self.tokenizer.convert_tokens_to_ids([self.tokenizer.cls_token])[0]
self.sep_token_id = self.tokenizer.convert_tokens_to_ids([self.tokenizer.sep_token])[0]
def add_pytorch_transformers_vocab(vocab, tokenizer_name):
"""Add vocabulary from tokenizers in pytorch_transformers for use with pre-tokenized data.
These tokenizers have a convert_tokens_to_ids method, but this doesn't do
anything special, so we can just use the standard indexers.
"""
do_lower_case = "uncased" in tokenizer_name
if tokenizer_name.startswith("bert-"):
tokenizer = BertTokenizer.from_pretrained(tokenizer_name,
do_lower_case=do_lower_case)
elif tokenizer_name.startswith("roberta-"):
tokenizer = RobertaTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("xlnet-"):
tokenizer = XLNetTokenizer.from_pretrained(tokenizer_name,
do_lower_case=do_lower_case)
elif tokenizer_name.startswith("openai-gpt"):
tokenizer = OpenAIGPTTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("gpt2"):
tokenizer = GPT2Tokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("transfo-xl-"):
tokenizer = TransfoXLTokenizer.from_pretrained(tokenizer_name)
elif tokenizer_name.startswith("xlm-"):
tokenizer = XLMTokenizer.from_pretrained(tokenizer_name)
if (tokenizer_name.startswith("openai-gpt")
or tokenizer_name.startswith("gpt2")
or tokenizer_name.startswith("transo-xl-")):
tokenizer.add_special_tokens({
"bos_token": "<start>",
"sep_token": "<delim>",
"cls_token": "<extract>"
})
# TODO: this is another place can be simplified by "model-before-preprocess" reorganization
# we can pass tokenizer created in model here, see issue <TBD>
vocab_size = len(tokenizer)
# do not use tokenizer.vocab_size, it does not include newly added token
if tokenizer_name.startswith("roberta-"):
if tokenizer.convert_ids_to_tokens(vocab_size - 1) is None:
vocab_size -= 1
else:
log.info("Time to delete vocab_size-1 in preprocess.py !!!")
# due to a quirk in huggingface's file, the last token of RobertaTokenizer is None, remove
# this when they fix the problem
ordered_vocab = tokenizer.convert_ids_to_tokens(range(vocab_size))
log.info("Added pytorch_transformers vocab (%s): %d tokens",
tokenizer_name, len(ordered_vocab))
for word in ordered_vocab:
vocab.add_token_to_namespace(
word, input_module_tokenizer_name(tokenizer_name))
def __init__(self, model):
super().__init__()
if 'roberta' in model:
print("Roberta model: {}".format(model))
self.tokenizer = RobertaTokenizer.from_pretrained(model)
self.bert = RobertaModel.from_pretrained(model)
else:
print("Bert model: {}".format(model))
self.tokenizer = BertTokenizer.from_pretrained(model)
self.bert = BertModel.from_pretrained(model)
self.dim = self.bert.pooler.dense.in_features
self.max_len = self.bert.embeddings.position_embeddings.num_embeddings
if use_cuda:
self.cuda()
def __init__(self, opt):
self.opt = opt
if 'roberta' in opt.pretrained_bert_name:
tokenizer = RobertaTokenizer.from_pretrained(
opt.pretrained_bert_name)
transformer = RobertaModel.from_pretrained(
opt.pretrained_bert_name, output_attentions=True)
elif 'bert' in opt.pretrained_bert_name:
tokenizer = BertTokenizer.from_pretrained(opt.pretrained_bert_name)
transformer = BertModel.from_pretrained(opt.pretrained_bert_name,
output_attentions=True)
elif 'xlnet' in opt.pretrained_bert_name:
tokenizer = XLNetTokenizer.from_pretrained(
opt.pretrained_bert_name)
transformer = XLNetModel.from_pretrained(opt.pretrained_bert_name,
output_attentions=True)
if 'bert' or 'xlnet' in opt.model_name:
tokenizer = Tokenizer4Pretrain(tokenizer, opt.max_seq_len)
self.model = opt.model_class(transformer, opt).to(opt.device)
# elif 'xlnet' in opt.model_name:
# tokenizer = Tokenizer4Pretrain(tokenizer, opt.max_seq_len)
# self.model = opt.model_class(bert,opt).to(opt.device)
else:
tokenizer = build_tokenizer(
fnames=[opt.dataset_file['train'], opt.dataset_file['test']],
max_seq_len=opt.max_seq_len,
dat_fname='{0}_tokenizer.dat'.format(opt.dataset))
embedding_matrix = build_embedding_matrix(
word2idx=tokenizer.word2idx,
embed_dim=opt.embed_dim,
dat_fname='{0}_{1}_embedding_matrix.dat'.format(
str(opt.embed_dim), opt.dataset))
self.model = opt.model_class(embedding_matrix, opt).to(opt.device)
self.trainset = ABSADataset(opt.dataset_file['train'], tokenizer)
self.testset = ABSADataset(opt.dataset_file['test'], tokenizer)
assert 0 <= opt.valset_ratio < 1
if opt.valset_ratio > 0:
valset_len = int(len(self.trainset) * opt.valset_ratio)
self.trainset, self.valset = random_split(
self.trainset, (len(self.trainset) - valset_len, valset_len))
else:
self.valset = self.testset
if opt.device.type == 'cuda':
logger.info('cuda memory allocated: {}'.format(
torch.cuda.memory_allocated(device=opt.device.index)))
self._print_args()
def __init__(self,
train_file,
valid_file,
test_file,
dict_path,
bert_path,
bert_name,
batch_size=4,
seq_length=20,
negative_sample_rate=1.0,
negative_sample_size=25):
self.batch_size = batch_size
self.negative_sampling_rate = negative_sample_rate
self.negative_sampling_size = negative_sample_size
self.seq_length = seq_length
self.ent_dict = {}
if bert_name == 'roberta-base':
self.tokenizer = RobertaTokenizer.from_pretrained(bert_path +
bert_name)
elif bert_name == 'bert-base-uncased':
self.tokenizer = BertTokenizer.from_pretrained(bert_path +
bert_name)
logger.info('reading entity dict...')
with open(dict_path) as f:
for line in f:
entity, entity_id = line.strip('\n').split('\t')
self.ent_dict[entity] = int(entity_id)
logger.info('there are {} entities'.format(len(self.ent_dict)))
self.train_corpus = self.read_file(train_file)[:96106]
self.total_train_instances = 96106
random.shuffle(self.train_corpus)
logger.info('there are {} instances in {}'.format(
self.total_train_instances, train_file))
self.valid_corpus = self.read_file(valid_file)
self.total_valid_instances = len(self.valid_corpus)
random.shuffle(self.valid_corpus)
logger.info('there are {} instances in {}'.format(
self.total_valid_instances, valid_file))
self.test_corpus = self.read_file(test_file)
self.total_test_instances = len(self.test_corpus)
random.shuffle(self.test_corpus)
logger.info('there are {} instances in {}'.format(
self.total_test_instances, test_file))
def check_tokenizer_dataset(pretrained_model, file):
name = pretrained_model.split('-')[0].lower()
assert name in ['bert', 'roberta']
tokenizer = RobertaTokenizer.from_pretrained(
pretrained_model
) if name == 'roberta' else BertTokenizer.from_pretrained(
pretrained_model)
reader = BertNLIDatasetReader(pretrained_model,
lazy=True,
percent_data=0.001)
for instance in reader.read(file):
input_ids = instance['input_ids'].array.tolist()
token_type_ids = instance['token_type_ids'].array
attention_mask = instance['attention_mask'].array
premise_tokens = instance['metadata'].metadata[
'premise_tokens']
hypothesis_tokens = instance['metadata'].metadata[
'hypothesis_tokens']
assert len(input_ids) == len(token_type_ids) == len(
attention_mask)
assert attention_mask.all() == 1
assert reader._label_dict[instance['metadata'].metadata[
'label']] == instance['label'].array
if name == 'bert':
tokenizer.convert_tokens_to_ids(['[CLS]'] +
premise_tokens +
['[SEP]'] +
hypothesis_tokens +
['[SEP]']) == input_ids
segment_divide = len(premise_tokens) + 2
assert input_ids[:segment_divide][-1] == 102
assert token_type_ids[:segment_divide].all() == 0
assert token_type_ids[segment_divide:].all() == 1
elif name == 'roberta':
assert tokenizer.convert_tokens_to_ids(
['<s>'] + premise_tokens + ['</s>', '</s>'] +
hypothesis_tokens + ['</s>']) == input_ids
def __init__(self,
model_name_or_path: str,
max_seq_length: int = 128,
do_lower_case: bool = True):
super(RoBERTa, self).__init__()
self.config_keys = ['max_seq_length', 'do_lower_case']
self.do_lower_case = do_lower_case
if max_seq_length > 510:
logging.warning(
"RoBERTa only allows a max_seq_length of 510 (512 with special tokens). Value will be set to 510"
)
max_seq_length = 510
self.max_seq_length = max_seq_length
self.roberta = RobertaModel.from_pretrained(model_name_or_path)
self.tokenizer = RobertaTokenizer.from_pretrained(
model_name_or_path, do_lower_case=do_lower_case)
self.cls_token_id = self.tokenizer.convert_tokens_to_ids(
[self.tokenizer.cls_token])[0]
self.sep_token_id = self.tokenizer.convert_tokens_to_ids(
[self.tokenizer.sep_token])[0]
def __init__(self,
pretrained_model,
percent_data=1,
max_seq_length=None,
lazy=False) -> None:
super().__init__(lazy)
assert percent_data > 0 and percent_data <= 1
self.percent_data = percent_data
self.max_seq_length = max_seq_length
self.tokenizer_class = pretrained_model.split('-')[0].lower()
if self.tokenizer_class == 'roberta':
self._tokenizer = RobertaTokenizer.from_pretrained(
pretrained_model)
elif self.tokenizer_class == 'bert':
self._tokenizer = BertTokenizer.from_pretrained(pretrained_model,
do_lower_case=True)
else:
raise ValueError('tokenizer_model must either be roberta or bert')
self.sep_id = self._tokenizer.encode(self._tokenizer.sep_token)[0]
self._label_dict = {'entailment': 0, 'neutral': 1, 'contradiction': 2}
##########################
# Utility functions #
##########################
import torch
import time, sys
from pytorch_transformers import RobertaTokenizer, BertTokenizer
tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
tokenizer_bert = BertTokenizer.from_pretrained('bert-base-cased')
def _truncate_seq_pair(tokens_a, max_length):
"""Truncates a sequence pair in place to the maximum length.
Copyed from https://github.com/huggingface/pytorch-pretrained-BERT
"""
# This is a simple heuristic which will always truncate the longer sequence
# one token at a time. This makes more sense than truncating an equal percent
# of tokens from each, since if one sequence is very short then each token
# that's truncated likely contains more information than a longer sequence.
while True:
total_length = len(tokens_a)
if total_length <= max_length:
break
tokens_a.pop()
def get_BERT_vector(sent1,
sent2=None,
max_sent1_len=400,
max_sent2_len=100,
def __init__(self, args):
super().__init__()
if args.hfroberta_model_dir is not None:
# load bert model from file
roberta_model_name = str(args.hfroberta_model_dir) + "/"
dict_file = roberta_model_name
print("loading huggingface RoBERTa model from {}".format(roberta_model_name))
else:
# load RoBERTa model from huggingface cache
roberta_model_name = args.hfroberta_model_name
dict_file = roberta_model_name
# When using a cased model, make sure to pass do_lower_case=False directly to BaseTokenizer
do_lower_case = False
if 'uncased' in roberta_model_name:
do_lower_case=True
# Load pre-trained model tokenizer (vocabulary)
self.tokenizer = RobertaTokenizer.from_pretrained(dict_file)
# original vocab
# The following process is baded on gpt_connector.
# RoBERTa also uses BPE. the bytes_to_unicode function takes all control
# and whitespace characters in code points 0-255 and shifts them up
# by 256 to make them printable. So space (code point 32) becomes Ġ (code point 288).
# (copied from https://github.com/openai/gpt-2/issues/80#issuecomment-487202159).
#
# Other control characters will be removed during voca_intersection process.
def convert_word(word):
if word == ROBERTA_UNK:
return word
if word == ROBERTA_MASK:
return word
if word == ROBERTA_START_SENTENCE:
return word
if word == ROBERTA_END_SENTENCE:
return word
if word == ROBERTA_PAD:
return word
if word.startswith('Ġ'): # the token starts with a whitespace
return word[1:]
return f'_{word}_' # the token not start with a white space.
# may be not a head of a word,
# or may be a head of a sentence.
# need duplitation check?
_, gpt_vocab = zip(*sorted(self.tokenizer.decoder.items()))
self.vocab = [convert_word(word) for word in gpt_vocab]
self._init_inverse_vocab()
# Get UNK symbol as it's written in the origin RoBERTa vocab.
unk_index = self.inverse_vocab[ROBERTA_UNK] # OPENAI_UNK
self.unk_symbol = self.tokenizer.decoder[unk_index]
# Get MASK symbol as it's written in the origin RoBERTa vocab.
mask_index = self.inverse_vocab[ROBERTA_MASK]
self.mask_symbol = self.tokenizer.decoder[mask_index]
# Load pre-trained model (weights)
self.masked_roberta_model = RobertaForMaskedLM.from_pretrained(roberta_model_name)
self.masked_roberta_model.eval()
#print(self.masked_roberta_model.config)
# ... to get hidden states
self.roberta_model = self.masked_roberta_model.roberta
# Sanity check.
#assert len(self.vocab) == self.masked_roberta_model.config.vocab_size
#assert 0 == self.masked_roberta_model.config.n_special
self.eos_id = self.inverse_vocab[ROBERTA_END_SENTENCE] # OPENAI_EOS
self.model_vocab = self.vocab
self.pad_id = self.inverse_vocab[ROBERTA_PAD]
self.unk_index = self.inverse_vocab[ROBERTA_UNK]
self.mask_index = mask_index
def __init__(self, max_seq_len, pretrained_roberta_name):
self.tokenizer = RobertaTokenizer.from_pretrained(
pretrained_roberta_name)
self.max_seq_len = max_seq_len
def main():
args = parse_arguments()
# argument setting
print("=== Argument Setting ===")
print("src: " + args.src)
print("tgt: " + args.tgt)
print("alpha: " + str(args.alpha))
print("seed: " + str(args.seed))
print("train_seed: " + str(args.train_seed))
print("model_type: " + str(args.model))
print("max_seq_length: " + str(args.max_seq_length))
print("batch_size: " + str(args.batch_size))
print("num_epochs: " + str(args.num_epochs))
set_seed(args.train_seed)
if args.model == 'roberta':
tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
else:
tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
# preprocess data
print("=== Processing datasets ===")
if args.src == 'blog':
src_x, src_y = CSV2Array(os.path.join('data', args.src, 'blog.csv'))
elif args.src == 'airline':
src_x, src_y = CSV2Array(os.path.join('data', args.src, 'airline.csv'))
else:
src_x, src_y = XML2Array(
os.path.join('data', args.src, 'negative.review'),
os.path.join('data', args.src, 'positive.review'))
src_x, src_test_x, src_y, src_test_y = train_test_split(
src_x, src_y, test_size=0.2, stratify=src_y, random_state=args.seed)
if args.tgt == 'blog':
tgt_x, tgt_y = CSV2Array(os.path.join('data', args.tgt, 'blog.csv'))
elif args.tgt == 'airline':
tgt_x, tgt_y = CSV2Array(os.path.join('data', args.tgt, 'airline.csv'))
else:
tgt_x, tgt_y = XML2Array(
os.path.join('data', args.tgt, 'negative.review'),
os.path.join('data', args.tgt, 'positive.review'))
tgt_train_x, _, tgt_train_y, _ = train_test_split(tgt_x,
tgt_y,
test_size=0.2,
stratify=tgt_y,
random_state=args.seed)
if args.model == 'roberta':
src_features = roberta_convert_examples_to_features(
src_x, src_y, args.max_seq_length, tokenizer)
src_test_features = roberta_convert_examples_to_features(
src_test_x, src_test_y, args.max_seq_length, tokenizer)
tgt_features = roberta_convert_examples_to_features(
tgt_train_x, tgt_train_y, args.max_seq_length, tokenizer)
tgt_all_features = roberta_convert_examples_to_features(
tgt_x, tgt_y, args.max_seq_length, tokenizer)
else:
src_features = convert_examples_to_features(src_x, src_y,
args.max_seq_length,
tokenizer)
src_test_features = convert_examples_to_features(
src_test_x, src_test_y, args.max_seq_length, tokenizer)
tgt_features = convert_examples_to_features(tgt_train_x, tgt_train_y,
args.max_seq_length,
tokenizer)
tgt_all_features = convert_examples_to_features(
tgt_x, tgt_y, args.max_seq_length, tokenizer)
# load dataset
src_data_loader = get_data_loader(src_features, args.batch_size)
src_data_loader_eval = get_data_loader(src_test_features, args.batch_size)
tgt_data_loader = get_data_loader(tgt_features, args.batch_size)
tgt_data_loader_all = get_data_loader(tgt_all_features, args.batch_size)
# load models
if args.model == 'bert':
encoder = BertEncoder()
cls_classifier = BertClassifier()
dom_classifier = DomainClassifier()
elif args.model == 'distilbert':
encoder = DistilBertEncoder()
cls_classifier = BertClassifier()
dom_classifier = DomainClassifier()
else:
encoder = RobertaEncoder()
cls_classifier = RobertaClassifier()
dom_classifier = RobertaDomainClassifier()
if args.load:
encoder = init_model(encoder, restore=param.encoder_path)
cls_classifier = init_model(cls_classifier,
restore=param.cls_classifier_path)
dom_classifier = init_model(dom_classifier,
restore=param.dom_classifier_path)
else:
encoder = init_model(encoder)
cls_classifier = init_model(cls_classifier)
dom_classifier = init_model(dom_classifier)
print("=== Start Training ===")
if args.train:
encoder, cls_classifier, dom_classifier = train(
args, encoder, cls_classifier, dom_classifier, src_data_loader,
src_data_loader_eval, tgt_data_loader, tgt_data_loader_all)
print("=== Evaluating classifier for encoded target domain ===")
print(">>> after training <<<")
evaluate(encoder, cls_classifier, tgt_data_loader_all)
def test_roberta_embeddings():
roberta_model: str = "roberta-base"
tokenizer = RobertaTokenizer.from_pretrained(roberta_model)
model = RobertaModel.from_pretrained(
pretrained_model_name_or_path=roberta_model, output_hidden_states=True
)
model.to(flair.device)
model.eval()
s: str = "Berlin and Munich have a lot of puppeteer to see ."
with torch.no_grad():
tokens = tokenizer.tokenize("<s> " + s + " </s>")
indexed_tokens = tokenizer.convert_tokens_to_ids(tokens)
tokens_tensor = torch.tensor([indexed_tokens])
tokens_tensor = tokens_tensor.to(flair.device)
hidden_states = model(tokens_tensor)[-1]
first_layer = hidden_states[1][0]
assert len(first_layer) == len(tokens)
# 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
#
# '<s>', 'Ber', 'lin', 'Ġand', 'ĠMunich', 'Ġhave', 'Ġa', 'Ġlot', 'Ġof', 'Ġpupp', 'ete', 'er', 'Ġto', 'Ġsee', 'Ġ.', '</s>'
# \ / | | | | | | \ | / | | |
# Berlin and Munich have a lot of puppeteer to see .
#
# 0 1 2 3 4 5 6 7 8 9 10
def embed_sentence(
sentence: str,
pooling_operation,
layers: str = "1",
use_scalar_mix: bool = False,
) -> Sentence:
embeddings = RoBERTaEmbeddings(
pretrained_model_name_or_path=roberta_model,
layers=layers,
pooling_operation=pooling_operation,
use_scalar_mix=use_scalar_mix,
)
flair_sentence = Sentence(sentence)
embeddings.embed(flair_sentence)
return flair_sentence
# First subword embedding
sentence_first_subword = embed_sentence(sentence=s, pooling_operation="first")
first_token_embedding_ref = first_layer[1].tolist()
first_token_embedding_actual = sentence_first_subword.tokens[0].embedding.tolist()
puppeteer_first_subword_embedding_ref = first_layer[9].tolist()
puppeteer_first_subword_embedding_actual = sentence_first_subword.tokens[
7
].embedding.tolist()
assert first_token_embedding_ref == first_token_embedding_actual
assert (
puppeteer_first_subword_embedding_ref
== puppeteer_first_subword_embedding_actual
)
# Last subword embedding
sentence_last_subword = embed_sentence(sentence=s, pooling_operation="last")
# First token is splitted into two subwords.
# As we use "last" as pooling operation, we consider the last subword as "first token" here
first_token_embedding_ref = first_layer[2].tolist()
first_token_embedding_actual = sentence_last_subword.tokens[0].embedding.tolist()
puppeteer_last_subword_embedding_ref = first_layer[11].tolist()
puppeteer_last_subword_embedding_actual = sentence_last_subword.tokens[
7
].embedding.tolist()
assert first_token_embedding_ref == first_token_embedding_actual
assert (
puppeteer_last_subword_embedding_ref == puppeteer_last_subword_embedding_actual
)
# First and last subword embedding
sentence_first_last_subword = embed_sentence(
sentence=s, pooling_operation="first_last"
)
first_token_embedding_ref = torch.cat([first_layer[1], first_layer[2]]).tolist()
first_token_embedding_actual = sentence_first_last_subword.tokens[
0
].embedding.tolist()
puppeteer_first_last_subword_embedding_ref = torch.cat(
[first_layer[9], first_layer[11]]
).tolist()
puppeteer_first_last_subword_embedding_actual = sentence_first_last_subword.tokens[
7
].embedding.tolist()
assert first_token_embedding_ref == first_token_embedding_actual
assert (
puppeteer_first_last_subword_embedding_ref
== puppeteer_first_last_subword_embedding_actual
)
# Mean of all subword embeddings
sentence_mean_subword = embed_sentence(sentence=s, pooling_operation="mean")
first_token_embedding_ref = calculate_mean_embedding(
[first_layer[1], first_layer[2]]
).tolist()
first_token_embedding_actual = sentence_mean_subword.tokens[0].embedding.tolist()
puppeteer_mean_subword_embedding_ref = calculate_mean_embedding(
[first_layer[9], first_layer[10], first_layer[11]]
).tolist()
puppeteer_mean_subword_embedding_actual = sentence_mean_subword.tokens[
7
].embedding.tolist()
assert first_token_embedding_ref == first_token_embedding_actual
assert (
puppeteer_mean_subword_embedding_ref == puppeteer_mean_subword_embedding_actual
)
# Check embedding dimension when using multiple layers
sentence_mult_layers = embed_sentence(
sentence="Munich", pooling_operation="first", layers="1,2,3,4"
)
ref_embedding_size = 4 * 768
actual_embedding_size = len(sentence_mult_layers.tokens[0].embedding)
assert ref_embedding_size == actual_embedding_size
# Check embedding dimension when using multiple layers and scalar mix
sentence_mult_layers_scalar_mix = embed_sentence(
sentence="Berlin",
pooling_operation="first",
layers="1,2,3,4",
use_scalar_mix=True,
)
ref_embedding_size = 1 * 768
actual_embedding_size = len(sentence_mult_layers_scalar_mix.tokens[0].embedding)
assert ref_embedding_size == actual_embedding_size
print("Build bert model.")
bert_model = RobertaModel(RobertaConfig().from_pretrained(args.roberta_model))
print("Build Drop model.")
network = NumericallyAugmentedBertNet(bert_model,
hidden_size=bert_model.config.hidden_size,
dropout_prob=0.0,
use_gcn=args.use_gcn,
gcn_steps=args.gcn_steps)
if args.cuda: network.cuda()
print("Load from pre path {}.".format(args.pre_path))
network.load_state_dict(torch.load(args.pre_path))
print("Load data from {}.".format(args.inf_path))
tokenizer = RobertaTokenizer.from_pretrained(args.roberta_model)
inf_iter = DropBatchGen(args, tokenizer, DropReader(tokenizer, passage_length_limit=463, question_length_limit=46)._read(args.inf_path))
print("Start inference...")
result = {}
network.eval()
with torch.no_grad():
for batch in tqdm(inf_iter):
output_dict = network(**batch)
for i in range(len(output_dict["question_id"])):
result[output_dict["question_id"][i]] = output_dict["answer"][i]["predicted_answer"]
with open(args.dump_path, "w", encoding="utf8") as f:
json.dump(result, f)
def __init__(self, pretrained_model_name, max_seq_len):
super().__init__()
self.tokenizer = RobertaTokenizer.from_pretrained(pretrained_model_name)
self.max_seq_len = max_seq_len
self.pad_value = 1 # <pad> https://s3.amazonaws.com/models.huggingface.co/bert/roberta-base-vocab.json
def make_binary_dataset(input_prefix, output_prefix, lang, append_eos=False):
if lang == args.target_lang:
dict = flexible_dictionary.FlexibleDictionary.load(dict_path(lang))
else:
# dict = bert_dictionary.BertDictionary.load(dict_path(lang))
dict = gpt2_dictionary.GPT2Dictionary.load(dict_path(lang))
print('| [{}] Dictionary: {} types | {} types (for real)'.format(lang, len(dict) - 1, len(dict)))
ds = indexed_dataset.IndexedDatasetBuilder(dataset_dest_path(output_prefix, lang, 'bin'))
def consumer(tensor):
ds.add_item(tensor)
input_file = '{}{}'.format(input_prefix, ('.' + lang) if lang is not None else '')
if lang == args.target_lang:
res = Tokenizer.binarize(input_file, dict, consumer, append_eos=append_eos)
print('| [{}] {}: {} sents, {} tokens, {:.3}% replaced by {}'.format(
lang, input_file, res['nseq'], res['ntok'],
100 * res['nunk'] / res['ntok'], dict.unk_word if hasattr(dict, 'unk_word') else '<no_unk_word>'))
else:
# read article
# from pytorch_pretrained_bert.tokenization import BertTokenizer
# tokenizer = BertTokenizer.from_pretrained('bert-base-uncased', do_lower_case=True)
from pytorch_transformers import RobertaTokenizer
tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
def penn_token2orig_token(sent):
# -LRB- -RRB- -LSB- -RSB- -LCB- -RCB-
'''
penn2orig = {"``":'"', "''": '"',
"-LRB-": '(', "-RRB-": ')',
"-LSB-":'[', "-RSB-":']',
"-LCB-":'{', "-RCB-":'}'}
'''
penn2orig = {"-LRB-": '(', "-RRB-": ')',
"-LSB-": '[', "-RSB-": ']',
"-LCB-": '{', "-RCB-": '}',
"-lrb-": '(', "-rrb-": ')',
"-lsb-": '[', "-rsb-": ']',
"-lcb-": '{', "-rcb-": '}',}
words = sent.strip().split()
words = [wd if not wd in penn2orig else penn2orig[wd] for wd in words]
return ' '.join(words)
num_token, num_unk_token = 0, 0
num_seq = 0
skip_line = 0
for line in open(input_file, encoding='utf8'):
sents = line.strip().split('<S_SEP>')
sents = sents[0:args.max_num_sentences]
sents = [' '.join(sent.strip().split()[0:args.max_num_words]) for sent in sents]
# print(sents)
sents = [tokenizer.tokenize(penn_token2orig_token(sent)) for sent in sents]
article_wids = []
for i, sent in enumerate(sents):
# sometimes there are too many tokens
MAXLEN = 500
if len(sent) > MAXLEN:
# sent = sent[0:MAXLEN]
print(' '.join(sent))
skip_line += 1
print(skip_line)
continue
if i != 0:
article_wids.append( dict.sep_index )
wids = tokenizer.convert_tokens_to_ids(sent)
# wids_vocab = [dict.index(word) for word in sent]
# assert wids == wids_vocab, 'word indices should be the same!'
article_wids.extend(wids)
for wid in wids:
if wid == dict.unk_index:
num_unk_token += 1
num_token += 1
num_seq += 1
tensor = torch.IntTensor(article_wids)
# print( dict.string_complete(tensor) )
ds.add_item(tensor)
print('| [{}] {}: {} sents, {} tokens, {:.3}% replaced by {}'.format(
lang, input_file, num_seq, num_token,
100 * num_unk_token / num_token, dict.unk_word if hasattr(dict, 'unk_word') else '<no_unk_word>'))
ds.finalize(dataset_dest_path(output_prefix, lang, 'idx'))
def main():
parser = argparse.ArgumentParser(description="Training")
parser.add_argument(
"--dump_path",
type=str,
required=True,
help="The output directory (log, checkpoints, parameters, etc.)")
parser.add_argument(
"--data_file",
type=str,
required=True,
help=
"The binarized file (tokenized + tokens_to_ids) and grouped by sequence."
)
parser.add_argument("--token_counts",
type=str,
required=True,
help="The token counts in the data_file for MLM.")
parser.add_argument("--force",
action='store_true',
help="Overwrite dump_path if it already exists.")
parser.add_argument("--vocab_size",
default=30522,
type=int,
help="The vocabulary size.")
parser.add_argument(
"--max_position_embeddings",
default=512,
type=int,
help="Maximum sequence length we can model (including [CLS] and [SEP])."
)
parser.add_argument(
"--sinusoidal_pos_embds",
action='store_false',
help=
"If true, the position embeddings are simply fixed with sinusoidal embeddings."
)
parser.add_argument("--n_layers",
default=6,
type=int,
help="Number of Transformer blocks.")
parser.add_argument("--n_heads",
default=12,
type=int,
help="Number of heads in the self-attention module.")
parser.add_argument(
"--dim",
default=768,
type=int,
help="Dimension through the network. Must be divisible by n_heads")
parser.add_argument("--hidden_dim",
default=3072,
type=int,
help="Intermediate dimension in the FFN.")
parser.add_argument("--dropout", default=0.1, type=float, help="Dropout.")
parser.add_argument("--attention_dropout",
default=0.1,
type=float,
help="Dropout in self-attention.")
parser.add_argument("--activation",
default='gelu',
type=str,
help="Activation to use in self-attention")
parser.add_argument(
"--tie_weights_",
action='store_false',
help=
"If true, we tie the embeddings matrix with the projection over the vocabulary matrix. Default is true."
)
parser.add_argument("--from_pretrained_weights",
default=None,
type=str,
help="Load student initialization checkpoint.")
parser.add_argument(
"--from_pretrained_config",
default=None,
type=str,
help="Load student initialization architecture config.")
parser.add_argument("--teacher_type",
default="bert",
choices=["bert", "roberta"],
help="Teacher type (BERT, RoBERTa).")
parser.add_argument("--teacher_name",
default="bert-base-uncased",
type=str,
help="The teacher model.")
parser.add_argument("--temperature",
default=2.,
type=float,
help="Temperature for the softmax temperature.")
parser.add_argument(
"--alpha_ce",
default=0.5,
type=float,
help="Linear weight for the distillation loss. Must be >=0.")
parser.add_argument("--alpha_mlm",
default=0.5,
type=float,
help="Linear weight for the MLM loss. Must be >=0.")
parser.add_argument("--alpha_mse",
default=0.0,
type=float,
help="Linear weight of the MSE loss. Must be >=0.")
parser.add_argument(
"--alpha_cos",
default=0.0,
type=float,
help="Linear weight of the cosine embedding loss. Must be >=0.")
parser.add_argument(
"--mlm_mask_prop",
default=0.15,
type=float,
help="Proportion of tokens for which we need to make a prediction.")
parser.add_argument("--word_mask",
default=0.8,
type=float,
help="Proportion of tokens to mask out.")
parser.add_argument("--word_keep",
default=0.1,
type=float,
help="Proportion of tokens to keep.")
parser.add_argument("--word_rand",
default=0.1,
type=float,
help="Proportion of tokens to randomly replace.")
parser.add_argument(
"--mlm_smoothing",
default=0.7,
type=float,
help=
"Smoothing parameter to emphasize more rare tokens (see XLM, similar to word2vec)."
)
parser.add_argument(
"--restrict_ce_to_mask",
action='store_true',
help=
"If true, compute the distilation loss only the [MLM] prediction distribution."
)
parser.add_argument("--n_epoch",
type=int,
default=3,
help="Number of pass on the whole dataset.")
parser.add_argument("--batch_size",
type=int,
default=5,
help="Batch size (for each process).")
parser.add_argument(
"--tokens_per_batch",
type=int,
default=-1,
help=
"If specified, modify the batches so that they have approximately this number of tokens."
)
parser.add_argument(
"--shuffle",
action='store_false',
help="If true, shuffle the sequence order. Default is true.")
parser.add_argument(
"--group_by_size",
action='store_false',
help=
"If true, group sequences that have similar length into the same batch. Default is true."
)
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=50,
help="Gradient accumulation for larger training batches.")
parser.add_argument("--warmup_prop",
default=0.05,
type=float,
help="Linear warmup proportion.")
parser.add_argument("--weight_decay",
default=0.0,
type=float,
help="Weight deay if we apply some.")
parser.add_argument("--learning_rate",
default=5e-4,
type=float,
help="The initial learning rate for Adam.")
parser.add_argument("--adam_epsilon",
default=1e-6,
type=float,
help="Epsilon for Adam optimizer.")
parser.add_argument("--max_grad_norm",
default=5.0,
type=float,
help="Max gradient norm.")
parser.add_argument("--initializer_range",
default=0.02,
type=float,
help="Random initialization range.")
parser.add_argument(
'--fp16',
action='store_true',
help=
"Whether to use 16-bit (mixed) precision (through NVIDIA apex) instead of 32-bit"
)
parser.add_argument(
'--fp16_opt_level',
type=str,
default='O1',
help=
"For fp16: Apex AMP optimization level selected in ['O0', 'O1', 'O2', and 'O3']."
"See details at https://nvidia.github.io/apex/amp.html")
parser.add_argument("--n_gpu",
type=int,
default=1,
help="Number of GPUs in the node.")
parser.add_argument("--local_rank",
type=int,
default=-1,
help="Distributed training - Local rank")
parser.add_argument("--seed", type=int, default=56, help="Random seed")
parser.add_argument("--log_interval",
type=int,
default=500,
help="Tensorboard logging interval.")
parser.add_argument("--checkpoint_interval",
type=int,
default=4000,
help="Checkpoint interval.")
args = parser.parse_args()
## ARGS ##
init_gpu_params(args)
set_seed(args)
if args.is_master:
if os.path.exists(args.dump_path):
if not args.force:
raise ValueError(
f'Serialization dir {args.dump_path} already exists, but you have not precised wheter to overwrite it'
'Use `--force` if you want to overwrite it')
else:
shutil.rmtree(args.dump_path)
if not os.path.exists(args.dump_path):
os.makedirs(args.dump_path)
logger.info(
f'Experiment will be dumped and logged in {args.dump_path}')
### SAVE PARAMS ###
logger.info(f'Param: {args}')
with open(os.path.join(args.dump_path, 'parameters.json'), 'w') as f:
json.dump(vars(args), f, indent=4)
git_log(args.dump_path)
assert (args.from_pretrained_weights is None and args.from_pretrained_config is None) or \
(args.from_pretrained_weights is not None and args.from_pretrained_config is not None)
### TOKENIZER ###
if args.teacher_type == 'bert':
tokenizer = BertTokenizer.from_pretrained(args.teacher_name)
elif args.teacher_type == 'roberta':
tokenizer = RobertaTokenizer.from_pretrained(args.teacher_name)
special_tok_ids = {}
for tok_name, tok_symbol in tokenizer.special_tokens_map.items():
idx = tokenizer.all_special_tokens.index(tok_symbol)
special_tok_ids[tok_name] = tokenizer.all_special_ids[idx]
logger.info(f'Special tokens {special_tok_ids}')
args.special_tok_ids = special_tok_ids
## DATA LOADER ##
logger.info(f'Loading data from {args.data_file}')
with open(args.data_file, 'rb') as fp:
data = pickle.load(fp)
assert os.path.isfile(args.token_counts)
logger.info(
f'Loading token counts from {args.token_counts} (already pre-computed)'
)
with open(args.token_counts, 'rb') as fp:
counts = pickle.load(fp)
assert len(counts) == args.vocab_size
token_probs = np.maximum(counts, 1)**-args.mlm_smoothing
for idx in special_tok_ids.values():
token_probs[idx] = 0. # do not predict special tokens
token_probs = torch.from_numpy(token_probs)
train_dataloader = Dataset(params=args, data=data)
logger.info(f'Data loader created.')
## STUDENT ##
if args.from_pretrained_weights is not None:
assert os.path.isfile(args.from_pretrained_weights)
assert os.path.isfile(args.from_pretrained_config)
logger.info(
f'Loading pretrained weights from {args.from_pretrained_weights}')
logger.info(
f'Loading pretrained config from {args.from_pretrained_config}')
stu_architecture_config = DistilBertConfig.from_json_file(
args.from_pretrained_config)
stu_architecture_config.output_hidden_states = True
student = DistilBertForMaskedLM.from_pretrained(
args.from_pretrained_weights, config=stu_architecture_config)
else:
args.vocab_size_or_config_json_file = args.vocab_size
stu_architecture_config = DistilBertConfig(**vars(args),
output_hidden_states=True)
student = DistilBertForMaskedLM(stu_architecture_config)
if args.n_gpu > 0:
student.to(f'cuda:{args.local_rank}')
logger.info(f'Student loaded.')
## TEACHER ##
if args.teacher_type == 'bert':
teacher = BertForMaskedLM.from_pretrained(args.teacher_name,
output_hidden_states=True)
elif args.teacher_type == 'roberta':
teacher = RobertaForMaskedLM.from_pretrained(args.teacher_name,
output_hidden_states=True)
if args.n_gpu > 0:
teacher.to(f'cuda:{args.local_rank}')
logger.info(f'Teacher loaded from {args.teacher_name}.')
## DISTILLER ##
torch.cuda.empty_cache()
distiller = Distiller(params=args,
dataloader=train_dataloader,
token_probs=token_probs,
student=student,
teacher=teacher)
distiller.train()
logger.info("Let's go get some drinks.")
def main(args):
assert args.path is not None, '--path required for generation!'
assert not args.sampling or args.nbest == args.beam, \
'--sampling requires --nbest to be equal to --beam'
assert args.replace_unk is None or args.raw_text, \
'--replace-unk requires a raw text dataset (--raw-text)'
# if args.save_path is not None:
# if check_file_exists(args):
# return
import_user_module(args)
if args.max_tokens is None and args.max_sentences is None:
args.max_tokens = 12000
# print(args)
utils.xpprint(args)
use_cuda = torch.cuda.is_available() and not args.cpu
# Load dataset splits
task = tasks.setup_task(args)
task.load_dataset(args.gen_subset)
print('| {} {} {} examples'.format(args.data, args.gen_subset,
len(task.dataset(args.gen_subset))))
# Set dictionaries
try:
src_dict = getattr(task, 'source_dictionary', None)
except NotImplementedError:
src_dict = None
tgt_dict = task.target_dictionary
# Load ensemble
print('| loading model(s) from {}'.format(args.path))
models, _model_args = utils.load_ensemble_for_inference(
args.path.split(':'),
task,
model_arg_overrides=eval(args.model_overrides),
)
# Optimize ensemble for generation
for model in models:
model.make_generation_fast_(
beamable_mm_beam_size=None if args.no_beamable_mm else args.beam,
need_attn=args.print_alignment,
)
if args.fp16:
model.half()
if use_cuda:
model.cuda()
# Load alignment dictionary for unknown word replacement
# (None if no unknown word replacement, empty if no path to align dictionary)
align_dict = utils.load_align_dict(args.replace_unk)
# Load dataset (possibly sharded)
itr = task.get_batch_iterator(
dataset=task.dataset(args.gen_subset),
max_tokens=args.max_tokens,
max_sentences=args.max_sentences,
max_positions=utils.resolve_max_positions(
task.max_positions(),
# *[model.max_positions() for model in models]
),
ignore_invalid_inputs=args.skip_invalid_size_inputs_valid_test,
required_batch_size_multiple=args.required_batch_size_multiple,
num_shards=args.num_shards,
shard_id=args.shard_id,
num_workers=args.num_workers,
).next_epoch_itr(shuffle=False)
# Initialize generator
gen_timer = StopwatchMeter()
generator = task.build_generator(args)
# Generate and compute BLEU score
if args.sacrebleu:
scorer = bleu.SacrebleuScorer()
else:
scorer = bleu.Scorer(tgt_dict.pad(), tgt_dict.eos(), tgt_dict.unk())
num_sentences = 0
has_target = True
if args.isRoberta:
from pytorch_transformers import RobertaTokenizer
tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
else:
tokenizer = None
with progress_bar.build_progress_bar(args, itr) as t:
wps_meter = TimeMeter()
for sample in t:
sample = utils.move_to_cuda(sample) if use_cuda else sample
if 'net_input' not in sample:
continue
prefix_tokens = None
if args.prefix_size > 0:
prefix_tokens = sample['target'][:, :args.prefix_size]
gen_timer.start()
hypos = task.inference_step(generator, models, sample,
prefix_tokens)
num_generated_tokens = sum(len(h[0]['tokens']) for h in hypos)
gen_timer.stop(num_generated_tokens)
for i, sample_id in enumerate(sample['id'].tolist()):
has_target = sample['target'] is not None
# Remove padding
src_tokens = utils.strip_pad(
sample['net_input']['src_tokens'][i, :], tgt_dict.pad())
target_tokens = None
if has_target:
target_tokens = utils.strip_pad(
sample['target'][i, :], tgt_dict.pad()).int().cpu()
# Either retrieve the original sentences or regenerate them from tokens.
if align_dict is not None:
src_str = task.dataset(
args.gen_subset).src.get_original_text(sample_id)
target_str = task.dataset(
args.gen_subset).tgt.get_original_text(sample_id)
else:
if src_dict is not None:
src_str = src_dict.string(src_tokens, args.remove_bpe)
else:
src_str = ""
if has_target:
target_str = tgt_dict.string(target_tokens,
args.remove_bpe,
escape_unk=True)
if not args.quiet:
if src_dict is not None:
if not args.isRoberta:
print('S-{}\t{}'.format(sample_id, src_str))
else:
src_text = ''.join(src_str.strip().split())
src_out = tokenizer.convert_tokens_to_string(
src_text)
print('S-{}\t{}'.format(sample_id, src_out))
if has_target:
if not args.isRoberta:
print('T-{}\t{}'.format(sample_id, target_str))
else:
tgt_text = ''.join(target_str.strip().split())
tgt_out = tokenizer.convert_tokens_to_string(
tgt_text)
print('T-{}\t{}'.format(sample_id, tgt_out))
# Process top predictions
for i, hypo in enumerate(
hypos[i][:min(len(hypos), args.nbest)]):
hypo_tokens, hypo_str, alignment = utils.post_process_prediction(
hypo_tokens=hypo['tokens'].int().cpu(),
src_str=src_str,
alignment=hypo['alignment'].int().cpu()
if hypo['alignment'] is not None else None,
align_dict=align_dict,
tgt_dict=tgt_dict,
remove_bpe=args.remove_bpe,
)
if not args.quiet:
if not args.isRoberta:
print('H-{}\t{}\t{}'.format(
sample_id, hypo['score'], hypo_str))
else:
hypo_text = ''.join(hypo_str.strip().split())
hypo_out = tokenizer.convert_tokens_to_string(
hypo_text)
print('H-{}\t{}\t{}'.format(
sample_id, hypo['score'], hypo_out))
print('P-{}\t{}'.format(
sample_id, ' '.join(
map(
lambda x: '{:.4f}'.format(x),
hypo['positional_scores'].tolist(),
))))
if args.print_alignment:
print('A-{}\t{}'.format(
sample_id, ' '.join(
map(lambda x: str(utils.item(x)),
alignment))))
# Score only the top hypothesis
if has_target and i == 0:
if align_dict is not None or args.remove_bpe is not None:
# Convert back to tokens for evaluation with unk replacement and/or without BPE
target_tokens = tgt_dict.encode_line(
target_str, add_if_not_exist=True)
if hasattr(scorer, 'add_string'):
scorer.add_string(target_str, hypo_str)
else:
scorer.add(target_tokens, hypo_tokens)
wps_meter.update(num_generated_tokens)
t.log({'wps': round(wps_meter.avg)})
num_sentences += sample['nsentences']
print(
'| Translated {} sentences ({} tokens) in {:.1f}s ({:.2f} sentences/s, {:.2f} tokens/s)'
.format(num_sentences, gen_timer.n, gen_timer.sum,
num_sentences / gen_timer.sum, 1. / gen_timer.avg))
if has_target:
print('| Generate {} with beam={}: {}'.format(args.gen_subset,
args.beam,
scorer.result_string()))
return scorer
path_to_wsc = '../data/wsc_data/enhanced.tense.random.role.syn.voice.scramble.freqnoun.gender.number.adverb.tsv'
wsc_datapoints = pd.read_csv(path_to_wsc, sep='\t')
def replace_pronoun(tokenized_text, pronoun_index, tokenized_option):
tokenized_text = tokenized_text[:
pronoun_index] + tokenized_option + tokenized_text[
pronoun_index:]
new_pronoun_index = pronoun_index + len(tokenized_option)
tokenized_text.pop(new_pronoun_index)
return tokenized_text
# Load pre-trained model tokenizer (vocabulary)
tokenizer = RobertaTokenizer.from_pretrained('roberta-large')
correct_preds = 0
correct_preds_enhanced = 0
stability_match = 0
all_preds = 0
# Load pre-trained model (weights)
model = RobertaForMaskedLM.from_pretrained('roberta-large')
model.eval()
for q_index, dp_split in wsc_datapoints.iterrows():
if dp_split['text_adverb'].replace(
' ', '') != '-' and dp_split['text_adverb'].replace(' ', ''):
def main():
parser = ArgumentParser()
parser.add_argument("--data_dir", default=None, type=str, required=True,
help="The input data dir. Should contain the .tsv files (or other data files) for the task.")
parser.add_argument("--model_type", default='roberta', type=str, required=True,
help="Model type selected in the list")
parser.add_argument("--model_name_or_path", default='roberta-large', type=str, required=True,
help="Path to pre-trained model or shortcut name selected in the list: ")
parser.add_argument("--task_name", default=None, type=str, required=True,
help="The name of the task to train.")
parser.add_argument("--comment", default='', type=str,
help="The comment")
parser.add_argument('--output_dir', type=Path, default="output")
parser.add_argument("--restore", type=bool, default=True, help="Whether restore from the last checkpoint, is nochenckpoints, start from scartch")
parser.add_argument("--max_seq_length", type=int, default=256, help="max lenght of token sequence")
parser.add_argument("--do_train", action='store_true',
help="Whether to run training.")
parser.add_argument("--do_eval", action='store_true',
help="Whether to run eval on the dev set.")
parser.add_argument("--evaluate_during_training", type=bool, default=False,
help="Rul evaluation during training at each logging step.")
parser.add_argument("--do_lower_case", action='store_true',
help="Set this flag if you are using an uncased model.")
parser.add_argument("--adapter_transformer_layers", default=2, type=int,
help="The transformer layers of adapter.")
parser.add_argument("--adapter_size", default=768, type=int,
help="The hidden size of adapter.")
parser.add_argument("--adapter_list", default="0,11,23", type=str,
help="The layer where add an adapter")
parser.add_argument("--adapter_skip_layers", default=0, type=int,
help="The skip_layers of adapter according to bert layers")
parser.add_argument('--meta_adapter_model', type=str, help='the pretrained adapter model')
parser.add_argument("--per_gpu_train_batch_size", default=32, type=int,
help="Batch size per GPU/CPU for training.")
parser.add_argument("--per_gpu_eval_batch_size", default=64, type=int,
help="Batch size per GPU/CPU for evaluation.")
parser.add_argument('--gradient_accumulation_steps',type=int,default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.")
parser.add_argument("--learning_rate", default=3e-5,type=float,
help="The initial learning rate for Adam.")
parser.add_argument("--weight_decay", default=0.0, type=float,
help="Weight deay if we apply some.")
parser.add_argument("--adam_epsilon", default=1e-8, type=float,
help="Epsilon for Adam optimizer.")
parser.add_argument("--max_grad_norm", default=1.0, type=float,
help="Max gradient norm.")
parser.add_argument("--num_train_epochs", default=3, type=int,
help="Total number of training epochs to perform.")
parser.add_argument("--max_steps", default=-1, type=int,
help="If > 0: set total number of training steps to perform. Override num_train_epochs.")
parser.add_argument("--warmup_steps", default=0, type=int,
help="Linear warmup over warmup_steps.")
parser.add_argument('--logging_steps', type=int, default=10,
help="How often do we snapshot losses, for inclusion in the progress dump? (0 = disable)")
parser.add_argument('--save_steps', type=int, default=1000,
help="Save checkpoint every X updates steps.")
parser.add_argument('--eval_steps', type=int, default=None,
help="eval every X updates steps.")
parser.add_argument('--max_save_checkpoints', type=int, default=500,
help="The max amounts of checkpoint saving. Bigger than it will delete the former checkpoints")
parser.add_argument("--eval_all_checkpoints", action='store_true',
help="Evaluate all checkpoints starting with the same prefix as model_name ending and ending with step number")
parser.add_argument("--no_cuda", action='store_true',
help="Avoid using CUDA when available")
parser.add_argument('--overwrite_output_dir', action='store_true',
help="Overwrite the content of the output directory")
parser.add_argument('--overwrite_cache', action='store_true',
help="Overwrite the cached training and evaluation sets")
parser.add_argument('--seed', type=int, default=42,
help="random seed for initialization")
parser.add_argument('--fp16', action='store_true',
help="Whether to use 16-bit (mixed) precision (through NVIDIA apex) instead of 32-bit")
parser.add_argument('--fp16_opt_level', type=str, default='O1',
help="For fp16: Apex AMP optimization level selected in ['O0', 'O1', 'O2', and 'O3']."
"See details at https://nvidia.github.io/apex/amp.html")
parser.add_argument("--local_rank", type=int, default=-1,
help="For distributed training: local_rank")
parser.add_argument('--server_ip', type=str, default='', help="For distant debugging.")
parser.add_argument('--server_port', type=str, default='', help="For distant debugging.")
parser.add_argument('--negative_sample', type=int, default=0, help='how many negative samples to select')
# args
args = parser.parse_args()
args.adapter_list = args.adapter_list.split(',')
args.adapter_list = [int(i) for i in args.adapter_list]
name_prefix = 'maxlen-'+str(args.max_seq_length)+'_'+'epoch-'+str(args.num_train_epochs)+'_'+'batch-'+str(args.per_gpu_train_batch_size)+'_'+'lr-'+str(args.learning_rate)+'_'+'warmup-'+str(args.warmup_steps)+'_'+str(args.comment)
args.my_model_name = args.task_name+'_'+name_prefix
args.output_dir = os.path.join(args.output_dir, args.my_model_name)
if args.eval_steps is None:
args.eval_steps = args.save_steps*2
# 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()
# 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")
args.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')
args.n_gpu = 1
args.device = device
# Setup logging
logging.basicConfig(format = '%(asctime)s - %(levelname)s - %(name)s - %(message)s',
datefmt = '%m/%d/%Y %H:%M:%S',
level = logging.INFO if args.local_rank in [-1, 0] else logging.WARN)
logger.warning("Process rank: %s, device: %s, n_gpu: %s, distributed training: %s, 16-bits training: %s",
args.local_rank, device, args.n_gpu, bool(args.local_rank != -1), args.fp16)
# Set seed
set_seed(args)
args.output_mode = output_modes[args.task_name]
processor = processors[args.task_name]()
label_list = processor.get_labels()
num_labels = len(label_list)
# Load pretrained model and tokenizer
if args.local_rank not in [-1, 0]:
torch.distributed.barrier() # Make sure only the first process in distributed training will download model & vocab
tokenizer = RobertaTokenizer.from_pretrained('roberta-large')
config = RobertaConfig.from_pretrained('roberta-large', output_attentions=True)
pretrained_model = PretrainedModel()
adapter_model = AdapterModel(args, pretrained_model.config)
if args.local_rank == 0:
torch.distributed.barrier() # Make sure only the first process in distributed training will download model & vocab
pretrained_model.to(args.device)
adapter_model.to(args.device)
model = (pretrained_model, adapter_model)
logger.info("Training/evaluation parameters %s", args)
val_dataset = load_and_cache_examples(args, args.task_name, tokenizer, 'dev', evaluate=True)
# Training
if args.do_train:
train_dataset = load_and_cache_examples(args, args.task_name, tokenizer, 'train', evaluate=False)
global_step, tr_loss = train(args, train_dataset, val_dataset, model, tokenizer)
logger.info(" global_step = %s, average loss = %s", global_step, tr_loss)
if args.do_train and (args.local_rank == -1 or torch.distributed.get_rank() == 0):
if not os.path.exists(args.output_dir) and args.local_rank in [-1, 0]:
os.makedirs(args.output_dir)
logger.info("Saving model checkpoint to %s", args.output_dir)
model_to_save = model.module if hasattr(adapter_model, 'module') else adapter_model # Take care of distributed/parallel training
model_to_save.save_pretrained(args.output_dir)
tokenizer.save_pretrained(args.output_dir)
torch.save(args, os.path.join(args.output_dir, 'training_args.bin'))
def make_binary_dataset(vocab, input_prefix, output_prefix, lang, num_workers):
print("| [{}] Dictionary: {} types".format(lang, len(vocab) - 1))
print('input_prefix', input_prefix)
print(dict_path(lang))
dict = roberta_dictionary.RobertaDictionary.load(dict_path(lang))
input_file = "{}{}".format(
input_prefix, ("." + lang) if lang is not None else ""
)
from pytorch_transformers import RobertaTokenizer
import torch
tokenizer = RobertaTokenizer.from_pretrained('roberta-large')
def penn_token2orig_token(sent):
# -LRB- -RRB- -LSB- -RSB- -LCB- -RCB-
penn2orig = {"``":'"', "''": '"',
"-LRB-": '(', "-RRB-": ')',
"-LSB-":'[', "-RSB-":']',
"-LCB-":'{', "-RCB-":'}',
"-lrb-": '(', "-rrb-": ')',
"-lsb-": '[', "-rsb-": ']',
"-lcb-": '{', "-rcb-": '}',
}
words = sent.strip().split()
words = [wd if not wd in penn2orig else penn2orig[wd] for wd in words]
return ' '.join(words)
num_token, num_unk_token = 0, 0
num_seq = 0
ds = indexed_dataset.IndexedDatasetBuilder(
dataset_dest_file(args, output_prefix, lang, "bin")
)
truncated_number = 512 if lang == 'article' else 256
CLS_TOKEN = '<s>'
SEP_TOKEN = '</s>'
if lang == 'article':
for line in open(input_file, encoding='utf8'):
article_wids = []
min_src_sentence = 3
max_src_sentence = 100
max_src_ntokens_per_sent = 200
min_src_ntokens_per_sent = 5
sents = line.strip().split('<S_SEP>')
sents = [sent.strip().split() for sent in sents]
idxs = [i for i, sent in enumerate(sents) if (len(sent) > min_src_ntokens_per_sent)]
src = [sents[i][:max_src_ntokens_per_sent] for i in idxs]
src = src[:max_src_sentence]
src_txt = [' '.join(sent) for sent in src]
src_tokens = [tokenizer.tokenize(sent) for sent in src_txt]
for i, sent in enumerate(src_tokens):
MAX_SENT_NTOKENS = 500
if len(sent) > MAX_SENT_NTOKENS:
sent = sent[:MAX_SENT_NTOKENS]
if i == 0:
input_text = [CLS_TOKEN] + sent + [SEP_TOKEN]
elif i != 0:
input_text = [SEP_TOKEN] + sent + [SEP_TOKEN]
wids = tokenizer.convert_tokens_to_ids(input_text)
article_wids.extend(wids)
for wid in wids:
if wid == dict.unk_index:
num_unk_token += 1
num_token += 1
num_seq += 1
article_wids = article_wids[:truncated_number] if len(article_wids) > truncated_number else article_wids
if article_wids[-1] != dict.sep_index:
article_wids[-1] = dict.sep_index
tensor = torch.IntTensor(article_wids)
# print( dict.string_complete(tensor) )
ds.add_item(tensor)
ds.finalize(dataset_dest_file(args, output_prefix, lang, "idx"))
elif lang == 'summary':
for line in open(input_file, encoding='utf8'):
article_wids = []
max_tgt_ntokens = 500
min_tgt_ntokens = 5
sents = line.strip().split('<S_SEP>')
sents = [tokenizer.tokenize(sent) for sent in sents]
for i, sent in enumerate(sents):
# sometimes, there are too many token in one single sentence
# to be specific, there are 8 sentences in the training article longer than 512, so truncate them to 500
# MAX_SENT_LEN = 500
# if len(sent) > MAX_SENT_LEN:
# sent = sent[:MAX_SENT_LEN]
if i != 0:
input_text = [SEP_TOKEN] + sent
else:
input_text = sent
wids = tokenizer.convert_tokens_to_ids(input_text)
# wtoks = tokenizer.convert_ids_to_tokens(wids)
# wstring = tokenizer.convert_tokens_to_string(wtoks)
# wids_vocab = [dict.index(word) for word in input_text]
# assert wids == wids_vocab, 'word indices should be the same!'
article_wids.extend(wids)
for wid in wids:
if wid == dict.unk_index:
num_unk_token += 1
num_token += 1
num_seq += 1
article_wids = article_wids[:truncated_number] if len(article_wids) > truncated_number else article_wids
if article_wids[-1] == dict.sep_index:
article_wids = article_wids[:len(article_wids)-1]
# print(article_wids)
if len(article_wids) > truncated_number:
print('lang: %s, token len: %d, truncated len: %d' % (lang, len(article_wids), truncated_number))
tensor = torch.IntTensor(article_wids)
# print( dict.string_complete(tensor) )
ds.add_item(tensor)
ds.finalize(dataset_dest_file(args, output_prefix, lang, "idx"))
print('| [{}] {}: {} sents, {} tokens, {:.3}% replaced by {}'.format(
lang, input_file, num_seq, num_token,
100 * num_unk_token / num_token, dict.unk_word if hasattr(dict, 'unk_word') else '<no_unk_word>'))
def __init__(self, args, dictionary, embed_tokens, left_pad=False):
super().__init__(dictionary)
self.dropout = args.dropout
# from pytorch_transformers import RobertaModel
from fairseq.modules.roberta_causal_mask import RobertaCasulMaskModel, BertCasulMaskModel
from pytorch_transformers.file_utils import PYTORCH_TRANSFORMERS_CACHE
from pytorch_transformers import RobertaConfig, RobertaTokenizer, BertConfig, BertTokenizer
if args.roberta_model.startswith('roberta'):
self.roberta = RobertaCasulMaskModel.from_pretrained(
args.roberta_model,
cache_dir=PYTORCH_TRANSFORMERS_CACHE /
'distributed_{}'.format(args.distributed_rank))
self.config = RobertaConfig.from_pretrained(args.roberta_model)
self.tokenizer = RobertaTokenizer.from_pretrained(
args.roberta_model)
else:
self.roberta = BertCasulMaskModel.from_pretrained(
args.roberta_model,
cache_dir=PYTORCH_TRANSFORMERS_CACHE /
'distributed_{}'.format(args.distributed_rank))
self.config = BertConfig.from_pretrained(args.roberta_model)
self.tokenizer = BertTokenizer.from_pretrained(args.roberta_model)
self.config.output_attentions = True
self.roberta.pooler.dense.weight.requires_grad = False
self.roberta.pooler.dense.bias.requires_grad = False
embed_dim = embed_tokens.embedding_dim
self.padding_idx = embed_tokens.padding_idx
# self.embed_tokens = embed_tokens
# self.embed_scale = math.sqrt(embed_dim)
self.args = args
# if args.sentence_transformer_arch == 'fairseq':
# self.padding_idx = embed_tokens.padding_idx
# self.sent_embed_positions = PositionalEmbedding(
# 1024, embed_dim, self.padding_idx,
# left_pad=False,
# learned=args.encoder_learned_pos,
# )
# self.doc_layers = nn.ModuleList([])
# self.doc_layers.extend([
# TransformerEncoderLayer(args)
# for i in range(args.encoder_layers)
# ])
if args.sentence_transformer_arch == 'bert':
# from pytorch_transformers import RobertaConfig, RobertaTokenizer
# self.config = RobertaConfig.from_pretrained(args.roberta_model)
# self.config.output_attentions = True
# self.tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
embed_dim = self.config.hidden_size
print('*** padding idx before ***', embed_tokens.padding_idx)
self.padding_idx = self.tokenizer.convert_tokens_to_ids(
self.tokenizer.pad_token)
print('*** padding idx after ***', self.padding_idx)
# let's assume each document has at most 128-self.padding_idx-1 sentences
# in case of roberta, it is 126
self.sent_position_embeddings = nn.Embedding(128, embed_dim)
if args.encoder_layers:
self.config.num_hidden_layers = args.encoder_layers
if args.dropout:
self.config.hidden_dropout_prob = args.dropout
if args.attention_dropout:
self.config.attention_probs_dropout_prob = args.attention_dropout
if args.attn_type == 'attn_score':
self.sent_encoder = AttnScoreBertEncoder(self.config)
elif args.attn_type == 'attn_prob':
self.sent_encoder = BertEncoder(self.config)
else:
raise Exception('--attn-type doesn\'t support {} yet !'.format(
args.attn_type))
self.sent_encoder.apply(self._init_weights)
print('*** sentence encoder config ***')
print(self.config)
else:
raise Exception(
'--sentence-transformer-arch doesn\'t support {} yet!'.format(
args.sentence_transformer_arch))
print(srl)
crf = ConditionalRandomField(len(roles_to_idx),
None,
include_start_end_transitions=True)
print(crf)
model_parameters = filter(lambda p: p.requires_grad,
chain(srl.parameters(), crf.parameters()))
num_params = sum([np.prod(p.size()) for p in model_parameters])
print("Total parameters =", num_params)
print(params)
if params.use_bert:
bert_tokenizer = RobertaTokenizer.from_pretrained("roberta-base")
bert_model = RobertaModel.from_pretrained("roberta-base",
output_hidden_states=True)
if params.gpu_id > -1:
bert_model.cuda()
else:
bert_tokenizer = None
bert_model = None
if params.gpu_id > -1:
srl.cuda()
crf.cuda()
srl.load_state_dict(torch.load(os.path.join(params.dir, params.modelname)))
crf.load_state_dict(
torch.load(os.path.join(params.dir, params.modelname + "crf")))
def main():
args = parse_arguments()
# argument setting
print("=== Argument Setting ===")
print("src: " + args.src)
print("tgt: " + args.tgt)
print("seed: " + str(args.seed))
print("train_seed: " + str(args.train_seed))
print("model_type: " + str(args.model))
print("max_seq_length: " + str(args.max_seq_length))
print("batch_size: " + str(args.batch_size))
print("pre_epochs: " + str(args.pre_epochs))
print("num_epochs: " + str(args.num_epochs))
print("temperature: " + str(args.temperature))
set_seed(args.train_seed)
if args.model == 'roberta':
tokenizer = RobertaTokenizer.from_pretrained('roberta-base')
else:
tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
# preprocess data
print("=== Processing datasets ===")
if args.src == 'blog':
src_x, src_y = CSV2Array(os.path.join('data', args.src, 'blog.csv'))
elif args.src == 'airline':
src_x, src_y = CSV2Array(os.path.join('data', args.src, 'airline.csv'))
else:
src_x, src_y = XML2Array(
os.path.join('data', args.src, 'negative.review'),
os.path.join('data', args.src, 'positive.review'))
src_x, src_test_x, src_y, src_test_y = train_test_split(
src_x, src_y, test_size=0.2, stratify=src_y, random_state=args.seed)
if args.tgt == 'blog':
tgt_x, tgt_y = CSV2Array(os.path.join('data', args.tgt, 'blog.csv'))
elif args.tgt == 'airline':
tgt_x, tgt_y = CSV2Array(os.path.join('data', args.tgt, 'airline.csv'))
else:
tgt_x, tgt_y = XML2Array(
os.path.join('data', args.tgt, 'negative.review'),
os.path.join('data', args.tgt, 'positive.review'))
tgt_train_x, tgt_test_y, tgt_train_y, tgt_test_y = train_test_split(
tgt_x, tgt_y, test_size=0.2, stratify=tgt_y, random_state=args.seed)
if args.model == 'roberta':
src_features = roberta_convert_examples_to_features(
src_x, src_y, args.max_seq_length, tokenizer)
src_test_features = roberta_convert_examples_to_features(
src_test_x, src_test_y, args.max_seq_length, tokenizer)
tgt_features = roberta_convert_examples_to_features(
tgt_x, tgt_y, args.max_seq_length, tokenizer)
tgt_train_features = roberta_convert_examples_to_features(
tgt_train_x, tgt_train_y, args.max_seq_length, tokenizer)
else:
src_features = convert_examples_to_features(src_x, src_y,
args.max_seq_length,
tokenizer)
src_test_features = convert_examples_to_features(
src_test_x, src_test_y, args.max_seq_length, tokenizer)
tgt_features = convert_examples_to_features(tgt_x, tgt_y,
args.max_seq_length,
tokenizer)
tgt_train_features = convert_examples_to_features(
tgt_train_x, tgt_train_y, args.max_seq_length, tokenizer)
# load dataset
src_data_loader = get_data_loader(src_features, args.batch_size)
src_data_eval_loader = get_data_loader(src_test_features, args.batch_size)
tgt_data_train_loader = get_data_loader(tgt_train_features,
args.batch_size)
tgt_data_all_loader = get_data_loader(tgt_features, args.batch_size)
# load models
if args.model == 'bert':
src_encoder = BertEncoder()
tgt_encoder = BertEncoder()
src_classifier = BertClassifier()
elif args.model == 'distilbert':
src_encoder = DistilBertEncoder()
tgt_encoder = DistilBertEncoder()
src_classifier = BertClassifier()
else:
src_encoder = RobertaEncoder()
tgt_encoder = RobertaEncoder()
src_classifier = RobertaClassifier()
discriminator = Discriminator()
if args.load:
src_encoder = init_model(args,
src_encoder,
restore=param.src_encoder_path)
src_classifier = init_model(args,
src_classifier,
restore=param.src_classifier_path)
tgt_encoder = init_model(args,
tgt_encoder,
restore=param.tgt_encoder_path)
discriminator = init_model(args,
discriminator,
restore=param.d_model_path)
else:
src_encoder = init_model(args, src_encoder)
src_classifier = init_model(args, src_classifier)
tgt_encoder = init_model(args, tgt_encoder)
discriminator = init_model(args, discriminator)
# train source model
print("=== Training classifier for source domain ===")
if args.pretrain:
src_encoder, src_classifier = pretrain(args, src_encoder,
src_classifier, src_data_loader)
# eval source model
print("=== Evaluating classifier for source domain ===")
evaluate(src_encoder, src_classifier, src_data_loader)
evaluate(src_encoder, src_classifier, src_data_eval_loader)
evaluate(src_encoder, src_classifier, tgt_data_all_loader)
for params in src_encoder.parameters():
params.requires_grad = False
for params in src_classifier.parameters():
params.requires_grad = False
# train target encoder by GAN
print("=== Training encoder for target domain ===")
if args.adapt:
tgt_encoder.load_state_dict(src_encoder.state_dict())
tgt_encoder = adapt(args, src_encoder, tgt_encoder, discriminator,
src_classifier, src_data_loader,
tgt_data_train_loader, tgt_data_all_loader)
# eval target encoder on lambda0.1 set of target dataset
print("=== Evaluating classifier for encoded target domain ===")
print(">>> source only <<<")
evaluate(src_encoder, src_classifier, tgt_data_all_loader)
print(">>> domain adaption <<<")
evaluate(tgt_encoder, src_classifier, tgt_data_all_loader)