def translate(args, net, src_vocab, tgt_vocab):
"done"
sentences = [l.split() for l in args.text]
translated = []
infer_dataset = ParallelDataset(args.text, args.ref_text, src_vocab,
tgt_vocab)
if args.batch_size is not None:
infer_dataset.BATCH_SIZE = args.batch_size
if args.max_batch_size is not None:
infer_dataset.max_batch_size = args.max_batch_size
if args.tokens_per_batch is not None:
infer_dataset.tokens_per_batch = args.tokens_per_batch
infer_dataiter = iter(infer_dataset.get_iterator(True, True))
for raw_batch in infer_dataiter:
src_mask = (raw_batch.src != src_vocab.stoi[config.PAD]).unsqueeze(-2)
if args.use_cuda:
src, src_mask = raw_batch.src.cuda(), src_mask.cuda()
if args.greedy:
generated, gen_len = greedy(args, net, src, src_mask, src_vocab,
tgt_vocab)
else:
generated, gen_len = generate_beam(args, net, src, src_mask,
src_vocab, tgt_vocab)
new_translations = gen_batch2str(src, raw_batch.tgt, generated,
gen_len, src_vocab, tgt_vocab)
for res_sent in new_translations:
print(res_sent)
translated.extend(new_translations)
return translated
def translate(args, net, src_vocab, tgt_vocab, active_out=None):
"done"
sentences = [l.split() for l in args.text]
translated = []
infer_dataset = ParallelDataset(args.text, args.ref_text, src_vocab,
tgt_vocab)
if args.batch_size is not None:
infer_dataset.BATCH_SIZE = args.batch_size
if args.max_batch_size is not None:
infer_dataset.max_batch_size = args.max_batch_size
if args.tokens_per_batch is not None:
infer_dataset.tokens_per_batch = args.tokens_per_batch
infer_dataiter = iter(
infer_dataset.get_iterator(shuffle=True,
group_by_size=True,
include_indices=True))
for (raw_batch, indices) in infer_dataiter:
src_mask = (raw_batch.src != src_vocab.stoi[config.PAD]).unsqueeze(-2)
if args.use_cuda:
src, src_mask = raw_batch.src.cuda(), src_mask.cuda()
else:
src = raw_batch.src
generated, gen_len = greedy(args, net, src, src_mask, src_vocab,
tgt_vocab)
new_translations = gen_batch2str(src, raw_batch.tgt, generated,
gen_len, src_vocab, tgt_vocab,
indices, active_out)
translated.extend(new_translations)
return translated
def load_test_data(data_path, vocab_path, batch_size, use_cuda=False):
# Note: sequential=False, use_vocab=False, since we use preprocessed inputs.
src_field = Field(
sequential=True,
use_vocab=False,
include_lengths=True,
batch_first=True,
pad_token=PAD,
unk_token=UNK,
init_token=None,
eos_token=None,
)
fields = (src_field, None)
device = None if use_cuda else -1
vocab = torch.load(vocab_path)
_, src_word2idx, _ = vocab['src_dict']
lower_case = vocab['lower_case']
test_src = convert_text2idx(read_corpus(data_path, None, lower_case),
src_word2idx)
test_data = ParallelDataset(
test_src,
None,
fields=fields,
)
test_iter = Iterator(
dataset=test_data,
batch_size=batch_size,
train=False, # Variable(volatile=True)
repeat=False,
device=device,
shuffle=False,
sort=False)
return src_field, test_iter
def translate(args, net, src_vocab, tgt_vocab):
"done"
sentences = [l.split() for l in args.text]
translated = []
if args.greedy:
infer_dataset = ParallelDataset(args.text, args.ref_text, src_vocab,
tgt_vocab)
if args.batch_size is not None:
infer_dataset.BATCH_SIZE = args.batch_size
if args.max_batch_size is not None:
infer_dataset.max_batch_size = args.max_batch_size
if args.tokens_per_batch is not None:
infer_dataset.tokens_per_batch = args.tokens_per_batch
infer_dataiter = iter(infer_dataset.get_iterator(True, True))
num_sents = 0
for raw_batch in infer_dataiter:
src_mask = (raw_batch.src !=
src_vocab.stoi[config.PAD]).unsqueeze(-2)
if args.use_cuda:
src, src_mask = raw_batch.src.cuda(), src_mask.cuda()
generated, gen_len = greedy(args, net, src, src_mask, src_vocab,
tgt_vocab)
new_translations = gen_batch2str(src, raw_batch.tgt, generated,
gen_len, src_vocab, tgt_vocab)
print('src size : {}'.format(src.size()))
'''
for res_sent in new_translations:
print(res_sent)
translated.extend(new_translations)
'''
else:
for i_s, sentence in enumerate(sentences):
s_trans = translate_sentence(sentence, net, args, src_vocab,
tgt_vocab)
s_trans = remove_special_tok(remove_bpe(s_trans))
translated.append(s_trans)
print(translated[-1])
return translated
from torch.utils.data import DataLoader
from dataset import ParallelDataset, BertTokenizer
print("Running unittests for XNLI dataset...")
batch_size = 12
seq_len = 128
tokenizer = BertTokenizer("data/bert-base-multilingual-uncased-vocab.txt")
dataset = ParallelDataset("data/xnli.15way.orig.tsv", tokenizer, seq_len)
data_loader = DataLoader(dataset, batch_size=batch_size, shuffle=True)
print("passed initialization and dataloader tests")
for i, batch in enumerate(data_loader):
assert type(batch) is dict
assert len(batch.keys()) == 15
assert batch['en'].shape == (batch_size, seq_len)
if i > 10:
break
print("passed batch sampling tests")
languages = ('vi', 'en')
tokenizer = BertTokenizer("data/bert-base-multilingual-uncased-vocab.txt")
dataset = ParallelDataset("data/xnli.15way.orig.tsv",
tokenizer,
seq_len,
languages=languages)
data_loader = DataLoader(dataset, batch_size=batch_size, shuffle=True)
print("passed initialization of subset of columns")
def load_para_data(params, data):
"""
Load parallel data.
"""
data['para'] = {}
required_para_train = set(params.clm_steps + params.mlm_steps +
params.pc_steps + params.mt_steps)
for src, tgt in params.para_dataset.keys():
logger.info('============ Parallel data (%s-%s)' % (src, tgt))
assert (src, tgt) not in data['para']
data['para'][(src, tgt)] = {}
for splt in ['train', 'valid', 'test']:
# no need to load training data for evaluation
if splt == 'train' and params.eval_only:
continue
# for back-translation, we can't load training data
if splt == 'train' and (src, tgt) not in required_para_train and (
tgt, src) not in required_para_train:
continue
# load binarized datasets
src_path, tgt_path = params.para_dataset[(src, tgt)][splt]
src_data = load_binarized(src_path, params)
tgt_data = load_binarized(tgt_path, params)
# update dictionary parameters
set_dico_parameters(params, data, src_data['dico'])
set_dico_parameters(params, data, tgt_data['dico'])
# create ParallelDataset
dataset = ParallelDataset(src_data['sentences'],
src_data['positions'],
tgt_data['sentences'],
tgt_data['positions'], params)
# remove empty and too long sentences
if splt == 'train':
dataset.remove_empty_sentences()
dataset.remove_long_sentences(params.max_len)
# for validation and test set, enumerate sentence per sentence
if splt != 'train':
dataset.tokens_per_batch = -1
# if there are several processes on the same machine, we can split the dataset
if splt == 'train' and params.n_gpu_per_node > 1 and params.split_data:
n_sent = len(dataset) // params.n_gpu_per_node
a = n_sent * params.local_rank
b = n_sent * params.local_rank + n_sent
dataset.select_data(a, b)
data['para'][(src, tgt)][splt] = dataset
logger.info("")
logger.info("")
def load_train_data(data_path,
batch_size,
max_src_len,
max_trg_len,
use_cuda=False):
# Note: sequential=False, use_vocab=False, since we use preprocessed inputs.
src_field = Field(
sequential=True,
use_vocab=False,
include_lengths=True,
batch_first=True,
pad_token=PAD,
unk_token=UNK,
init_token=None,
eos_token=None,
)
trg_field = Field(
sequential=True,
use_vocab=False,
include_lengths=True,
batch_first=True,
pad_token=PAD,
unk_token=UNK,
init_token=BOS,
eos_token=EOS,
)
fields = (src_field, trg_field)
device = None if use_cuda else -1
def filter_pred(example):
if len(example.src) <= max_src_len and len(example.trg) <= max_trg_len:
return True
return False
dataset = torch.load(data_path)
train_src, train_tgt = dataset['train_src'], dataset['train_tgt']
dev_src, dev_tgt = dataset['dev_src'], dataset['dev_tgt']
train_data = ParallelDataset(
train_src,
train_tgt,
fields=fields,
filter_pred=filter_pred,
)
train_iter = Iterator(
dataset=train_data,
batch_size=batch_size,
train=True, # Variable(volatile=False)
sort_key=lambda x: data.interleave_keys(len(x.src), len(x.trg)),
repeat=False,
shuffle=True,
device=device)
dev_data = ParallelDataset(
dev_src,
dev_tgt,
fields=fields,
)
dev_iter = Iterator(
dataset=dev_data,
batch_size=batch_size,
train=False, # Variable(volatile=True)
repeat=False,
device=device,
shuffle=False,
sort=False,
)
return src_field, trg_field, train_iter, dev_iter
def _create_datasets(self) -> tuple:
"""
Creates the following dataset from the data paths in the config file.
- a train generator that generates batches of src and tgt data
- a dev generator that generates batches of src dev data
- tgt_dev that denotes the raw target dev data
"""
# add task prefix and EOS token as required by model
src_train = [
self.model.config.prefix + text.strip() + " </s>"
for text in list(open(self.data_config["src_train"]))
]
src_dev = [
self.model.config.prefix + text.strip() + " </s>"
for text in list(open(self.data_config["src_dev"]))
]
tgt_train = [
text.strip() + " </s>"
for text in list(open(self.data_config["tgt_train"]))
]
tgt_dev = [
text.strip() for text in list(open(self.data_config["tgt_dev"]))
]
# tokenize src and target data
src_train_dict = self.tokenizer.batch_encode_plus(
src_train,
max_length=self.train_config["max_output_length"],
return_tensors="pt",
pad_to_max_length=True,
)
src_dev_dict = self.tokenizer.batch_encode_plus(
src_dev,
max_length=self.train_config["max_output_length"],
return_tensors="pt",
pad_to_max_length=True,
)
tgt_train_dict = self.tokenizer.batch_encode_plus(
tgt_train,
max_length=self.train_config["max_output_length"],
return_tensors="pt",
pad_to_max_length=True,
)
# obtain input tensors
input_ids = src_train_dict["input_ids"]
input_dev_ids = src_dev_dict["input_ids"]
output_ids = tgt_train_dict["input_ids"]
# specify data loader params and create train generator
params = {
"batch_size": self.train_config["batch_size"],
"shuffle": self.train_config["shuffle_data"],
"num_workers": self.train_config["num_workers_data_gen"],
}
train_generator = DataLoader(ParallelDataset(input_ids, output_ids),
**params)
self.logger.info(
f"Created training dataset of {len(input_ids)} parallel sentences")
dev_params = params
dev_params["shuffle"] = False
dev_generator = DataLoader(MonoDataset(input_dev_ids), **dev_params)
all_data = (train_generator, dev_generator, tgt_dev)
return all_data
