def load_langpair_dataset(
data_path, split,
src, src_dict,
tgt, tgt_dict,
dataset_impl,
left_pad_source, left_pad_target,
max_source_positions, max_target_positions,
prepend_bos=False, load_alignments=False,
truncate_source=False, append_source_id=False,
truncate_target=False,
append_eos_to_target=False,
portion=None,
):
src_path = os.path.join(data_path, '{}.{}'.format(split, src))
src_dataset = _load_dataset(path=src_path, impl=dataset_impl, dict=src_dict)
if portion is not None and split == 'train':
LOGGER.info('set {}.{} portion to {}'.format(split, src, portion))
src_dataset = PortionDataset(src_dataset, portion)
tgt_path = os.path.join(data_path, '{}.{}'.format(split, tgt))
tgt_dataset = _load_dataset(path=tgt_path, impl=dataset_impl, dict=tgt_dict)
if truncate_target:
LOGGER.info('truncate {}.{} to {}'.format(split, tgt, max_target_positions))
tgt_dataset = TruncateDataset(tgt_dataset, max_target_positions)
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(tgt_dataset, tgt_dict.index('[{}]'.format(tgt)))
eos = tgt_dict.index('[{}]'.format(tgt))
if portion is not None and split == 'train':
LOGGER.info('set {}.{} portion to {}'.format(split, tgt, portion))
tgt_dataset = PortionDataset(tgt_dataset, portion)
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
LOGGER.info('loaded {} examples from: {}'.format(len(src_dataset), src_path))
LOGGER.info('loaded {} examples from: {}'.format(len(tgt_dataset), tgt_path))
return GraphLanguagePairDataset(
src_dataset, src_dataset.sizes, src_dict,
tgt_dataset, tgt_dataset_sizes, tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=None, eos=eos,
remove_eos_from_source=True,
append_eos_to_target=append_eos_to_target,
shuffle=True,
)
def build_dataset_for_inference(self, src_tokens, src_lengths, sort=True):
src_dataset = PadDataset(
TokenBlockDataset(
src_tokens,
src_lengths,
self.args['task']['tokens_per_sample'] - 1, # one less for <s>
pad=self.source_dictionary.pad(),
eos=self.source_dictionary.eos(),
break_mode='eos',
),
pad_idx=self.source_dictionary.pad(),
left_pad=False,
)
src_dataset = PrependTokenDataset(src_dataset,
self.source_dictionary.bos())
src_dataset = NestedDictionaryDataset(
{
'id': IdDataset(),
'net_input': {
'src_tokens': src_dataset,
'src_lengths': NumelDataset(src_dataset, reduce=False),
},
},
sizes=src_lengths,
)
if sort:
src_dataset = SortDataset(src_dataset, sort_order=[src_lengths])
return src_dataset
def load_dataset(self, split, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
paths = utils.split_paths(self.args.data)
assert len(paths) > 0
data_path = paths[(epoch - 1) % len(paths)]
split_path = os.path.join(data_path, split)
dataset = data_utils.load_indexed_dataset(
split_path,
self.dictionary,
self.args.dataset_impl,
combine=combine,
)
if dataset is None:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, split_path))
dataset = StripTokenDataset(dataset, self.dictionary.eos())
# create continuous blocks of tokens
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
self.args.tokens_per_sample -
2, # one less for <s> and one for </s>
pad=self.dictionary.pad(),
eos=self.dictionary.eos(),
break_mode=self.args.sample_break_mode,
document_sep_len=0)
# prepend beginning-of-sentence token (<s>, equiv. to [CLS] in BERT)
dataset = PrependTokenDataset(dataset, self.source_dictionary.bos())
dataset = AppendTokenDataset(dataset, self.source_dictionary.eos())
mask_whole_words = get_whole_word_mask(self.args, self.source_dictionary) \
if self.args.mask_length != 'subword' else None
self.datasets[split] = DenoisingDataset(
dataset,
dataset.sizes,
self.dictionary,
self.mask_idx,
mask_whole_words,
shuffle=self.args.shuffle_instance,
seed=self.seed,
args=self.args)
LOGGER.info(
"Split: {0}, Loaded {1} samples of denoising_dataset".format(
split,
len(self.datasets[split]),
))
def load_dataset(self, split, epoch=1, combine=False, **kwargs):
"""Load a given dataset split.
Args:
split (str): name of the split (e.g., train, valid, test)
"""
# paths = self.args.data.split(':')
paths = utils.split_paths(self.args['task']['data'])
assert len(paths) > 0
data_path = paths[(epoch - 1) % len(paths)]
# split_path = os.path.join(data_path, split)
if self.langs is None:
languages = sorted([
name for name in os.listdir(data_path)
if os.path.isdir(os.path.join(data_path, name))
])
else:
languages = self.langs # .split(',')
# for name in languages:
# assert os.path.exists(os.path.join(data_path, name)), FileNotFoundError(os.path.join(data_path, name))
LOGGER.info("| Training on {0} languages: {1}".format(
len(languages), languages))
LOGGER.info("| Language to id mapping: ",
{lang: id
for id, lang in enumerate(languages)})
mask_whole_words = get_whole_word_mask(self.args, self.dictionary)
lang_datasets = []
for language in languages:
# split_path = os.path.join(data_path, language, split)
if language == 'docstring':
split_path = os.path.join(data_path, language,
f"{split}.docstring.spm")
else:
split_path = os.path.join(data_path, language,
f"{split}.code.spm")
# split_path = os.path.join(data_path, language, f"{split}.spm.{language}")
# dataset = data_utils.load_indexed_dataset(
# split_path,
# self.source_dictionary,
# self.args['dataset']['dataset_impl'],
# combine=combine,
# )
dataset = load_lang_dataset_denoising(
path=split_path,
impl=self.args['dataset']['dataset_impl'],
dict=self.source_dictionary)
if dataset is None:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, split_path))
dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(dataset, self.source_dictionary.eos()),
self.args['task']['max_source_positions'] -
3), # <lang>, <bos>, <eos>
token=self.source_dictionary.eos(),
)
end_token = self.source_dictionary.index('[{}]'.format(language)) \
if self.args['task']['add_lang_token'] else self.source_dictionary.eos()
# create continuous blocks of tokens
dataset = TokenBlockDataset(
dataset,
dataset.sizes,
self.args['task']['tokens_per_sample'] -
2, # one less for <s> and one for </s>
pad=self.source_dictionary.pad(),
eos=end_token,
break_mode=self.args['task']['sample_break_mode'],
document_sep_len=0,
)
LOGGER.info('| loaded {} blocks from: {}'.format(
len(dataset), split_path))
# prepend beginning-of-sentence token (<s>, equiv. to [CLS] in BERT)
dataset = PrependTokenDataset(dataset,
self.source_dictionary.bos())
dataset = AppendTokenDataset(dataset, end_token)
lang_dataset = DenoisingDataset(
dataset,
dataset.sizes,
self.dictionary,
self.mask_idx,
mask_whole_words,
shuffle=self.args['dataset']['shuffle_instance'],
seed=self.seed,
args=self.args,
eos=None if not self.args['task']['add_lang_token'] else
self.source_dictionary.index('[{}]'.format(language)),
)
lang_datasets.append(lang_dataset)
dataset_lengths = np.array(
[len(d) for d in lang_datasets],
dtype=float,
)
LOGGER.info('| loaded total {} blocks for all languages'.format(
dataset_lengths.sum(), ))
if split == self.args['dataset']['train_subset']:
# For train subset, additionally up or down sample languages.
sample_probs = self._get_sample_prob(dataset_lengths)
LOGGER.info(
"| Sample probability by language: ", {
lang: "{0:.4f}".format(sample_probs[id])
for id, lang in enumerate(languages)
})
size_ratio = (sample_probs *
dataset_lengths.sum()) / dataset_lengths
LOGGER.info(
"| Up/Down Sampling ratio by language: ", {
lang: "{0:.2f}".format(size_ratio[id])
for id, lang in enumerate(languages)
})
resampled_lang_datasets = [
ResamplingDataset(
lang_datasets[i],
size_ratio=size_ratio[i],
seed=self.args['common']['seed'],
epoch=epoch,
replace=size_ratio[i] >= 1.0,
) for i, d in enumerate(lang_datasets)
]
dataset = ConcatDataset(resampled_lang_datasets, )
else:
dataset = ConcatDataset(lang_datasets)
lang_splits = [split]
# for lang_id, lang_dataset in enumerate(lang_datasets):
# split_name = split + '_' + languages[lang_id]
# lang_splits.append(split_name)
# self.datasets[split_name] = lang_dataset
if split in self.args['dataset']['valid_subset']:
self.args['dataset']['valid_subset'] = self.args['dataset'][
'valid_subset'].replace(split, ','.join(lang_splits))
with data_utils.numpy_seed(self.args['common']['seed'] + epoch):
shuffle = np.random.permutation(len(dataset))
self.datasets[split] = SortDataset(
dataset,
sort_order=[
shuffle,
dataset.sizes,
],
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
dataset_impl,
# combine, dataset_impl, upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=False,
load_alignments=False,
truncate_source=False,
append_source_id=False,
truncate_target=False,
append_eos_to_target=False,
):
# load source dataset
src_path = os.path.join(data_path, '{}.{}'.format(split, src))
src_dataset = _load_dataset(path=src_path,
impl=dataset_impl,
dict=src_dict)
if truncate_source:
# sntn => sntn[:max_source_positions]
src_dataset = TruncateDataset(src_dataset, max_source_positions)
# load target dataset
tgt_path = os.path.join(data_path, '{}.{}'.format(split, tgt))
tgt_dataset = _load_dataset(path=tgt_path,
impl=dataset_impl,
dict=tgt_dict)
if truncate_target:
# sntn => sntn[:max_target_positions]
tgt_dataset = TruncateDataset(tgt_dataset, max_target_positions)
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
src_dataset = AppendTokenDataset(src_dataset,
src_dict.index('[{}]'.format(src)))
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(
tgt_dataset, tgt_dict.index('[{}]'.format(tgt)))
eos = tgt_dict.index('[{}]'.format(tgt))
# align_dataset = None
# if load_alignments:
# align_path = os.path.join(data_path, '{}.align.{}-{}'.format(split, src, tgt))
# if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
# align_dataset = data_utils.load_indexed_dataset(align_path, None, dataset_impl)
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
LOGGER.info('loaded {} examples from: {}'.format(len(src_dataset),
src_path))
LOGGER.info('loaded {} examples from: {}'.format(len(tgt_dataset),
tgt_path))
return LanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=None,
eos=eos,
remove_eos_from_source=True,
append_eos_to_target=append_eos_to_target,
shuffle=True,
# shuffle=False, # debug
)
def load_masked_traverse_dataset_roberta(
args,
epoch,
data_path,
split,
source_dictionary,
combine,
):
split_path = os.path.join(data_path, '{}.ast_trav_df'.format(split))
dataset = data_utils.load_indexed_dataset(
path=split_path,
dictionary=source_dictionary,
dataset_impl=args['dataset']['dataset_impl'],
combine=combine,
)
if dataset is None:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, split_path))
# # create continuous blocks of tokens
# dataset = TokenBlockDataset(
# dataset,
# dataset.sizes,
# args['task']['tokens_per_sample'] - 1, # one less for <s>
# pad=source_dictionary.pad(),
# eos=source_dictionary.eos(),
# break_mode=args['task']['sample_break_mode'],
# )
# LOGGER.info('loaded {} blocks from: {}'.format(len(dataset), split_path))
# prepend beginning-of-sentence token (<s>, equiv. to [CLS] in BERT)
dataset = PrependTokenDataset(
dataset, source_dictionary.bos()) # .source_dictionary.bos()
# create masked input and targets
mask_whole_words = get_whole_word_mask(args, source_dictionary) \
if args['task']['mask_whole_words'] else None
src_dataset, tgt_dataset = MaskTokensDataset.apply_mask(
dataset,
source_dictionary,
pad_idx=source_dictionary.pad(),
mask_idx=source_dictionary.index(constants.MASK), # self.mask_idx,
seed=args['common']['seed'],
mask_prob=args['task']['mask_prob'],
leave_unmasked_prob=args['task']['leave_unmasked_prob'],
random_token_prob=args['task']['random_token_prob'],
freq_weighted_replacement=args['task']['freq_weighted_replacement'],
mask_whole_words=mask_whole_words,
)
with data_utils.numpy_seed(args['common']['seed'] + epoch):
shuffle = np.random.permutation(len(src_dataset))
return SortDataset(
NestedDictionaryDataset(
{
'id':
IdDataset(),
'net_input': {
'src_tokens':
PadDataset(
src_dataset,
pad_idx=source_dictionary.pad(),
left_pad=False,
),
'src_lengths':
NumelDataset(src_dataset, reduce=False),
},
'target':
PadDataset(
tgt_dataset,
pad_idx=source_dictionary.pad(),
left_pad=False,
),
'nsentences':
NumSamplesDataset(),
'ntokens':
NumelDataset(src_dataset, reduce=True),
},
sizes=[src_dataset.sizes],
),
sort_order=[
shuffle,
src_dataset.sizes,
],
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
dataset_impl,
# combine, dataset_impl, upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=True,
append_eos=True,
load_alignments=False,
truncate_source=False,
append_source_id=False,
truncate_target=False,
):
# truncate sentence for prepend <bos> and append <eos>
max_target_positions -= int(prepend_bos) + int(append_eos)
# load source dataset
src_path = os.path.join(data_path, '{}.{}'.format(split, src))
src_dataset = _load_dataset(path=src_path,
impl=dataset_impl,
dict=src_dict)
if truncate_source:
# sntn => sntn[:max_source_positions]
LOGGER.info('truncate {}.{} to {}'.format(split, src,
max_source_positions))
src_dataset = TruncateDataset(src_dataset, max_source_positions)
# load target dataset
tgt_path = os.path.join(data_path, '{}.{}'.format(split, tgt))
tgt_dataset = _load_dataset(path=tgt_path,
impl=dataset_impl,
dict=tgt_dict)
if truncate_target:
# sntn => sntn[:max_target_positions]
LOGGER.info('truncate {}.{} to {}'.format(split, tgt,
max_target_positions))
tgt_dataset = TruncateDataset(
tgt_dataset, max_target_positions) # 2 for BOS and EOS
# sntn[:max_target_positions] => <bos> sntn[:max_target_positions]
if prepend_bos:
tgt_dataset = PrependTokenDataset(tgt_dataset, token=tgt_dict.bos())
if append_eos:
tgt_dataset = AppendTokenDataset(tgt_dataset, token=tgt_dict.eos())
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
# load tgt ids
tgt_ids_path = os.path.join(data_path, '{}.id'.format(split))
tgt_ids = _load_ids(tgt_ids_path)
LOGGER.info('loaded {} examples from: {}'.format(len(src_dataset),
src_path))
LOGGER.info('loaded {} examples from: {}'.format(len(tgt_dataset),
tgt_path))
return BELanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
tgt_ids=tgt_ids,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=None,
bos=src_dict.bos(),
eos=src_dict.eos(),
# shuffle=True,
shuffle=False, # debug
)
def load_langpair_dataset(
data_path,
split,
domains,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=False,
load_alignments=False,
truncate_source=False,
append_source_id=False,
append_eos_to_target=False,
):
def split_exists(split, src, data_path, domain):
filename = os.path.join(data_path, domain,
'{}.{}'.format(split,
src)) # -{}.{} , tgt, lang
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for dm in domains:
# load datasets of src domains
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
if split_exists(split_k, src, data_path, dm):
prefix = os.path.join(
data_path, dm, '{}.'.format(split_k)) # {}-{}. , src, tgt
elif split_exists(split_k, tgt, data_path, dm):
prefix = os.path.join(
data_path, dm, '{}.'.format(split_k)) # {}-{}. , tgt, src
else:
if k > 0:
break
else:
raise FileNotFoundError(
'Dataset not found: {} ({})'.format(split, data_path))
src_dataset = data_utils.load_indexed_dataset(
prefix + src, src, src_dict, dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
tgt_dataset = data_utils.load_indexed_dataset(
prefix + tgt, tgt, tgt_dict, dataset_impl)
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
eos = None
if append_source_id:
src_dataset = AppendTokenDataset(src_dataset,
src_dict.index('[{}]'.format(src)))
if tgt_dataset is not None:
tgt_dataset = AppendTokenDataset(
tgt_dataset, tgt_dict.index('[{}]'.format(tgt)))
eos = tgt_dict.index('[{}]'.format(tgt))
# align_dataset = None
# if load_alignments:
# align_path = os.path.join(data_path, '{}.align.{}-{}'.format(split, src, tgt))
# if indexed_dataset.dataset_exists(align_path, impl=dataset_impl):
# align_dataset = data_utils.load_indexed_dataset(align_path, None, dataset_impl)
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return LanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=None,
eos=eos,
remove_eos_from_source=True,
append_eos_to_target=append_eos_to_target,
shuffle=True, # TODO debug: shuffle=False
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
dataset_impl,
# combine, dataset_impl, upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=True,
append_eos=True,
load_alignments=False,
truncate_source=False,
append_source_id=False,
truncate_target=False,
# lifelong learning
prev_tasks=[],
cur_task=None,
sample_portion=None,
):
# truncate sentence for prepend <bos> and append <eos>
max_target_positions -= int(prepend_bos) + int(append_eos)
# load source dataset
src_path = os.path.join(data_path, cur_task, '{}.{}'.format(split, src))
src_dataset = [
_load_dataset(path=src_path, impl=dataset_impl, dict=src_dict)
]
# load previous tasks
if len(prev_tasks
) > 0 and cur_task is not None and sample_portion is not None:
sample_size_per_task = int(
len(src_dataset[0]) * sample_portion // len(prev_tasks))
else:
sample_size_per_task = -1
if sample_size_per_task > 0:
for p_task in prev_tasks:
p_path = os.path.join(data_path, p_task,
'{}.{}'.format(split, src))
p_dataset = _load_dataset(p_path, dataset_impl, src_dict)
src_dataset.append(
SliceDataset(p_dataset, end=sample_size_per_task))
src_dataset = ConcatDataset(src_dataset)
# truncate dataset
if truncate_source:
# sntn => sntn[:max_source_positions]
LOGGER.info('truncate {}.{} to {}'.format(split, src,
max_source_positions))
src_dataset = TruncateDataset(src_dataset, max_source_positions)
# load target dataset
tgt_path = os.path.join(data_path, cur_task, '{}.{}'.format(split, tgt))
tgt_dataset = [
_load_dataset(path=tgt_path, impl=dataset_impl, dict=tgt_dict)
]
if sample_size_per_task > 0:
for p_task in prev_tasks:
p_path = os.path.join(data_path, p_task,
'{}.{}'.format(split, tgt))
p_dataset = _load_dataset(p_path, dataset_impl, tgt_dict)
tgt_dataset.append(
SliceDataset(p_dataset, end=sample_size_per_task))
tgt_dataset = ConcatDataset(tgt_dataset)
if truncate_target:
# sntn => sntn[:max_target_positions]
LOGGER.info('truncate {}.{} to {}'.format(split, tgt,
max_target_positions))
tgt_dataset = TruncateDataset(
tgt_dataset, max_target_positions) # 2 for BOS and EOS
# sntn[:max_target_positions] => <bos> sntn[:max_target_positions]
if prepend_bos:
tgt_dataset = PrependTokenDataset(tgt_dataset, token=tgt_dict.bos())
if append_eos:
tgt_dataset = AppendTokenDataset(tgt_dataset, token=tgt_dict.eos())
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
assert len(src_dataset) == len(tgt_dataset), (len(src_dataset),
len(tgt_dataset))
LOGGER.info('loaded {} examples from: [{}](current task) + {}(previous tasks)'. \
format(len(src_dataset), cur_task, prev_tasks))
return BELanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
align_dataset=None,
bos=src_dict.bos(),
eos=src_dict.eos(),
shuffle=(split == 'train'),
)
def load_langpair_dataset(
args,
programming_langs,
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
prepend_bos=False,
load_alignments=False,
truncate_source=False,
append_source_id=False,
is_distill=False,
):
def split_exists(split, src, data_path):
filename = os.path.join(data_path,
'{}.{}'.format(split,
src)) # -{}.{} , tgt, lang
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
topk_idxs = []
topk_probs = []
expert_scores = []
dataset_ids = []
lng_borders = [0]
is_train = split == 'train'
for ds_idx, program_lang in enumerate(programming_langs):
lang_data_path = os.path.join(data_path, program_lang)
split_k = split
# infer langcode
if split_exists(split_k, src, lang_data_path):
prefix = os.path.join(lang_data_path,
'{}.'.format(split_k)) # {}-{}. , src, tgt
elif split_exists(split_k, tgt, lang_data_path):
prefix = os.path.join(lang_data_path,
'{}.'.format(split_k)) # {}-{}. , tgt, src
else:
raise NotImplementedError('No data in {}'.format(lang_data_path))
src_dataset = data_utils.load_indexed_dataset(prefix + src, src,
src_dict, dataset_impl)
if truncate_source:
src_dataset = AppendTokenDataset(
TruncateDataset(
StripTokenDataset(src_dataset, src_dict.eos()),
max_source_positions - 1,
),
src_dict.eos(),
)
src_datasets.append(src_dataset)
length = len(src_dataset)
lng_borders.append(lng_borders[-1] + length)
tgt_dataset = data_utils.load_indexed_dataset(prefix + tgt, tgt,
tgt_dict, dataset_impl)
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
for i in range(length):
dataset_ids.append(ds_idx)
if is_distill and is_train: # distill only for train
path = '{}_{}_{}_topk_idx'.format(lang_data_path, src, tgt)
topk_idxs.append(TeacherOutputDataset(path))
path = '{}_{}_{}_topk_prob'.format(lang_data_path, src, tgt)
topk_probs.append(TeacherOutputDataset(path))
expert_bleu = os.path.join(
data_path,
'expert_bleu_{}_{}_{}.json'.format(program_lang, src, tgt))
expert_bleu = json.load(open(expert_bleu))
expert_scores.append(expert_bleu[f"bleu_{program_lang}"])
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
LOGGER.info('src data: {}, tgt data: {}'.format(len(src_dataset),
len(tgt_dataset)))
if is_distill and is_train: # distill only for train
topk_idx_dataset = ConcatDataset(topk_idxs)
topk_probs_dataset = ConcatDataset(topk_probs)
assert len(topk_probs_dataset) == len(src_dataset), (
len(topk_probs_dataset), len(src_dataset))
assert len(topk_idx_dataset) == len(src_dataset)
else:
topk_idx_dataset = None
topk_probs_dataset = None
if prepend_bos:
assert hasattr(src_dict, "bos_index") and hasattr(
tgt_dict, "bos_index")
src_dataset = PrependTokenDataset(src_dataset, src_dict.bos())
if tgt_dataset is not None:
tgt_dataset = PrependTokenDataset(tgt_dataset, tgt_dict.bos())
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return UniversalDataset(
args,
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
dataset_ids=dataset_ids,
lng_borders=lng_borders,
dataset_names=programming_langs,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
topk_idxs=topk_idx_dataset,
topk_probs=topk_probs_dataset,
expert_scores=expert_scores,
is_train=is_train,
)
def load_langpair_dataset(
data_path,
split,
src,
src_dict,
tgt,
tgt_dict,
combine,
dataset_impl,
upsample_primary,
left_pad_source,
left_pad_target,
max_source_positions,
max_target_positions,
load_alignments=False,
truncate_source=False,
truncate_target=False,
):
def split_exists(split, src, data_path):
filename = os.path.join(data_path,
'{}.{}'.format(split,
src)) # -{}.{} , tgt, lang
return indexed_dataset.dataset_exists(filename, impl=dataset_impl)
src_datasets = []
tgt_datasets = []
for k in itertools.count():
split_k = split + (str(k) if k > 0 else '')
# infer langcode
if split_exists(split_k, src, data_path):
prefix = os.path.join(data_path,
'{}.'.format(split_k)) # {}-{}. , src, tgt
elif split_exists(split_k, tgt, data_path):
prefix = os.path.join(data_path,
'{}.'.format(split_k)) # {}-{}. , tgt, src
else:
if k > 0:
break
else:
raise FileNotFoundError('Dataset not found: {} ({})'.format(
split, data_path))
src_dataset = data_utils.load_indexed_dataset(prefix + src, 'text',
src_dict, dataset_impl)
if truncate_source and max_source_positions:
src_dataset = TruncateDataset(src_dataset, max_source_positions)
src_datasets.append(src_dataset)
tgt_dataset = data_utils.load_indexed_dataset(prefix + tgt, 'text',
tgt_dict, dataset_impl)
if truncate_target and max_target_positions:
tgt_dataset = PrependTokenDataset(
AppendTokenDataset(TruncateDataset(tgt_dataset,
max_target_positions - 2),
token=tgt_dict.eos()), tgt_dict.bos())
if tgt_dataset is not None:
tgt_datasets.append(tgt_dataset)
if not combine:
break
assert len(src_datasets) == len(tgt_datasets) or len(tgt_datasets) == 0
if len(src_datasets) == 1:
src_dataset = src_datasets[0]
tgt_dataset = tgt_datasets[0] if len(tgt_datasets) > 0 else None
else:
sample_ratios = [1] * len(src_datasets)
sample_ratios[0] = upsample_primary
src_dataset = ConcatDataset(src_datasets, sample_ratios)
if len(tgt_datasets) > 0:
tgt_dataset = ConcatDataset(tgt_datasets, sample_ratios)
else:
tgt_dataset = None
tgt_dataset_sizes = tgt_dataset.sizes if tgt_dataset is not None else None
return LanguagePairDataset(
src_dataset,
src_dataset.sizes,
src_dict,
tgt_dataset,
tgt_dataset_sizes,
tgt_dict,
left_pad_source=left_pad_source,
left_pad_target=left_pad_target,
max_source_positions=max_source_positions,
max_target_positions=max_target_positions,
shuffle=True, # TODO debug: shuffle=False
)