def __init__(self, tokenizer: PreTrainedTokenizer, file_path: str, block_size: int, local_rank=-1):
assert os.path.isfile(file_path)
logger.info("Creating features from dataset file at %s", file_path)
self.examples = []
self.keywords = label_mapping["keyword"]
self.label_eos_id = self.keywords.index(label_mapping["label_eos_token"])
self.label_bos_id = self.keywords.index(label_mapping["label_bos_token"])
total, valid = 0, 0
with open(file_path, encoding="utf-8") as f:
for line in tqdm(f):
total += 1
example = json.loads(line)
text = example["question"]
columns = example["columns"] + example["tables"] + example["extra"] + example["negative"][:15]
columns = [column.lower() for column in columns]
# column_to_text = example["column_to_text"]
column_to_text = {}
for column in columns:
column_text = column.replace(".", " ").replace("_", " ")
column_to_text[column] = column_text.lower()
sql = example["processed_sql"]
text_tokens = [tokenizer.cls_token] + tokenizer.tokenize(text) + [tokenizer.sep_token]
column_spans = []
start_idx = len(text_tokens)
for column in columns:
column_tokens = tokenizer.tokenize(column_to_text[column])
text_tokens.extend(column_tokens)
text_tokens.append(tokenizer.sep_token)
end_idx = start_idx + len(column_tokens)
column_spans.append((start_idx, end_idx))
start_idx = end_idx + 1
input_ids = tokenizer.convert_tokens_to_ids(text_tokens)
if len(input_ids) > 600:
continue
label_ids = []
try:
for token in sql.split():
token = token.lower()
if token in columns:
label_ids.append(columns.index(token) + len(self.keywords))
else:
label_ids.append(self.keywords.index(token))
except:
continue
if len(label_ids) > 300:
continue
label_ids = [self.label_bos_id] + label_ids + [self.label_eos_id]
self.examples.append({
"idx": example["sql_id"],
"input_ids": input_ids,
"column_spans": column_spans,
"label_ids": label_ids})
valid += 1
print("Valid Example {}; Invalid Example {}".format(valid, total-valid))
def __init__(
self, tokenizer: PreTrainedTokenizer, file_path: str, block_size: int, overwrite_cache=False,
):
assert os.path.isfile(file_path)
# MODIFICATION: 2 is the value for the xlm-roberta tokenizer
block_size = block_size - 2#tokenizer.num_special_tokens_to_add(pair=False)
directory, filename = os.path.split(file_path)
cached_features_file = os.path.join(
directory, "cached_lm_{}_{}_{}".format(tokenizer.__class__.__name__, str(block_size), filename,),
)
# Make sure only the first process in distributed training processes the dataset,
# and the others will use the cache.
lock_path = cached_features_file + ".lock"
with FileLock(lock_path):
if os.path.exists(cached_features_file) and not overwrite_cache:
start = time.time()
with open(cached_features_file, "rb") as handle:
self.examples = pickle.load(handle)
logger.info(
f"Loading features from cached file {cached_features_file} [took %.3f s]", time.time() - start
)
else:
logger.info(f"Creating features from dataset file at {directory}")
self.examples = []
with open(file_path, encoding="utf-8") as f:
text = f.read()
tokenized_text = tokenizer.convert_tokens_to_ids(tokenizer.tokenize(text))
for i in range(0, len(tokenized_text) - block_size + 1, block_size): # Truncate in block of block_size
self.examples.append(
tokenizer.build_inputs_with_special_tokens(tokenized_text[i : i + block_size])
)
# Note that we are losing the last truncated example here for the sake of simplicity (no padding)
# If your dataset is small, first you should loook for a bigger one :-) and second you
# can change this behavior by adding (model specific) padding.
start = time.time()
with open(cached_features_file, "wb") as handle:
pickle.dump(self.examples, handle, protocol=pickle.HIGHEST_PROTOCOL)
logger.info(
"Saving features into cached file %s [took %.3f s]", cached_features_file, time.time() - start
)
def _glue_convert_examples_to_features(
examples: List[InputExample],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
task=None,
label_list=None,
output_mode=None,
):
if max_length is None:
max_length = tokenizer.max_len
if task is not None:
processor = glue_processors[task]()
if label_list is None:
label_list = processor.get_labels()
logger.info("Using label list %s for task %s" % (label_list, task))
if output_mode is None:
output_mode = glue_output_modes[task]
logger.info("Using output mode %s for task %s" %
(output_mode, task))
label_map = {label: i for i, label in enumerate(label_list)}
def label_from_example(example: InputExample) -> Union[int, float, None]:
if example.label is None:
return None
if output_mode == "classification":
return label_map[example.label]
elif output_mode == "regression":
return float(example.label)
raise KeyError(output_mode)
labels = [label_from_example(example) for example in examples]
# batch_encoding = tokenizer(
# [(example.text_a, example.text_b) for example in examples],
# max_length=max_length,
# padding="max_length",
# truncation=True,
# )
features = []
for i in range(len(examples)):
# inputs = {k: batch_encoding[k][i] for k in batch_encoding}
inputs = tokenizer.encode_plus(text=examples[i].text_a.split(" "),
text_pair=examples[i].text_b.split(" ")
if examples[i].text_b else None,
max_length=max_length,
padding="max_length",
truncation=True)
feature = InputFeatures(**inputs, label=labels[i])
features.append(feature)
for i, example in enumerate(examples[:5]):
logger.info("*** Example ***")
logger.info("guid: %s" % (example.guid))
logger.info("features: %s" % features[i])
return features
def convert_examples_to_features(
examples: Union[List[InputExample]],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
):
if max_length is None:
max_length = tokenizer.max_len
labels = [exmaple.label for exmaple in examples]
batch_encoding = tokenizer.batch_encode_plus(
[(example.text_a, example.text_b) for example in examples],
max_length=max_length,
pad_to_max_length=True,
)
features = []
for i in range(len(examples)):
inputs = {k: batch_encoding[k][i] for k in batch_encoding}
feature = InputFeatures(**inputs, label=labels[i])
features.append(feature)
for i, example in enumerate(examples[:3]):
logger.info("*** Example ***")
logger.info("guid: %s" % (example.uid))
logger.info("features: %s" % features[i])
return features
def get_space_aware_token(cls, token: str, tokenizer: PreTrainedTokenizer,
**kwargs) -> str:
"""
Convert the given string to a single word/sentence-piece token.
We might want to reverse-engineer the tokenizer to analyze the
behaviour because every single implementation differs dramatically.
"""
if token in ["[MASK]", "<mask>"]:
return tokenizer.mask_token
# This trick is developed by professionals in the laboratory conditions
# !! DO NOT TRY THIS AT HOME !!
z, q, w = tokenizer.tokenize("zq w", **kwargs)
# We expect that `q` should always be joined to the `z`
join_seq, *tail_q = q.rpartition("q")
assert tail_q == ["q", ""]
# Similarly, `w` token should always start with whitespace
space_seq, *tail_w = w.partition("w")
assert tail_w == ["w", ""]
# Only if the token starts with space then we treat it as a separate token
if not token.startswith(" "):
return join_seq + token
*head, token = token.partition(" ")
assert head == ["", " "]
return space_seq + token
# Here we also check whether the first token contains a whitespace
prefix_space = z == q
def snli_multi_task_convert_examples_to_features(
examples_1: Union[List[InputExample]],
examples_2: Union[List[InputExample]],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
):
if max_length is None:
max_length = tokenizer.max_len
labels_1 = [exmaple.label for exmaple in examples_1]
labels_2 = [exmaple.label for exmaple in examples_2]
batch_encoding_1 = tokenizer.batch_encode_plus(
[(example.text_a, example.text_b) for example in examples_1],
max_length=max_length,
pad_to_max_length=True,
)
batch_encoding_2 = tokenizer.batch_encode_plus(
[(example.text_a, example.text_b) for example in examples_2],
max_length=max_length,
pad_to_max_length=True,
)
features = []
for i in range(len(examples_1)):
inputs_1 = {k: batch_encoding_1[k][i] for k in batch_encoding_1}
inputs_2 = {k: batch_encoding_2[k][i] for k in batch_encoding_2}
feature = InputFeatures(
input_ids=inputs_1['input_ids'],
attention_mask=inputs_1['attention_mask'],
token_type_ids=inputs_1['token_type_ids'],
label=labels_1[i],
input_ids_2=inputs_2['input_ids'],
attention_mask_2=inputs_2['attention_mask'],
token_type_ids_2=inputs_2['token_type_ids'],
label_2=labels_2[i],
)
features.append(feature)
for i, example in enumerate(examples_1[:3]):
logger.info("*** Example ***")
logger.info("guid: %s" % (example.uid))
logger.info("features: %s" % features[i])
return features
def __init__(self, tokenizer: PreTrainedTokenizer, file_path: str,
col_token: str):
self.examples = []
total = 0
valid = 0
with open(file_path, encoding="utf-8") as f:
for line in tqdm(f):
total += 1
example = json.loads(line)
text = example["question"]
schema = example["table_info"]["header"]
tokens = [tokenizer.cls_token] + tokenizer.tokenize(
text, add_prefix_space=True) + [col_token]
column_spans = []
start_idx = len(tokens)
for column in schema:
column_tokens = tokenizer.tokenize(column.lower(),
add_prefix_space=True)
tokens.extend(column_tokens)
column_spans.append(
(start_idx, start_idx + len(column_tokens)))
tokens.append(col_token)
start_idx += len(column_tokens) + 1
# Change last col token to sep token
tokens[-1] = tokenizer.sep_token
input_ids = tokenizer.convert_tokens_to_ids(tokens)
entities = example["entities"]
column_labels = [0] * len(schema)
for entity in entities:
if entity != "limit" and entity != "*":
column_labels[schema.index(entity)] = 1
if len(input_ids) > 600:
continue
self.examples.append({
"input_ids": input_ids,
"column_spans": column_spans,
"column_labels": column_labels
})
valid += 1
# Create input
print("Total {} and Valid {}".format(total, valid))
def __init__(self, tokenizer: PreTrainedTokenizer, file_path: str, block_size: int):
assert os.path.isfile(file_path)
# Here, we do not cache the features, operating under the assumption
# that we will soon use fast multithreaded tokenizers from the
# `tokenizers` repo everywhere =)
logger.info("Creating features from dataset file at %s", file_path)
with open(file_path, encoding="utf-8") as f:
lines = [line for line in f.read().splitlines() if (len(line) > 0 and not line.isspace())]
batch_encoding = tokenizer.batch_encode_plus(lines, add_special_tokens=True, max_length=block_size)
self.examples = batch_encoding["input_ids"]
def __init__(self,
tokenizer: PreTrainedTokenizer,
file_path,
block_size,
local_rank=-1):
assert os.path.isfile(file_path)
logger.info(
"Creating features from dataset file at {}".format(file_path))
self.examples = []
total, valid = 0, 0
add_prefix_space = isinstance(tokenizer, BartTokenizer) or isinstance(
tokenizer, RobertaTokenizer)
with open(file_path, encoding="utf-8") as f:
for line in tqdm(f):
total += 1
example = json.loads(line)
sql = " ".join(example["sql"].split()).lower()
text = example["question"].strip().lower()
text_tokens = [tokenizer.cls_token] + tokenizer.tokenize(
text,
add_prefix_space=add_prefix_space) + [tokenizer.sep_token]
sql_tokens = [tokenizer.cls_token] + tokenizer.tokenize(
sql,
add_prefix_space=add_prefix_space) + [tokenizer.sep_token]
text_token_ids = tokenizer.convert_tokens_to_ids(text_tokens)
sql_token_ids = tokenizer.convert_tokens_to_ids(sql_tokens)
if len(text_token_ids) > 800 or len(sql_token_ids) > 800:
continue
self.examples.append({
"text_token_ids": text_token_ids,
"sql_token_ids": sql_token_ids
})
logger.info("Total {} examples.".format(total))
def __init__(self, tokenizer: PreTrainedTokenizer, file_path: str,
block_size: int):
assert os.path.isfile(
file_path), f"Input file path {file_path} not found"
directory, filename = os.path.split(file_path)
cached_features_file = os.path.join(
directory,
"cached_lbl_{}_{}_{}".format(
tokenizer.__class__.__name__,
str(block_size),
filename,
),
)
if os.path.exists(cached_features_file):
with open(cached_features_file, "rb") as handle:
self.examples = pickle.load(handle)
else:
with open(file_path, encoding="utf-8") as f:
lines = [
line for line in f.read().splitlines()
if (len(line) > 0 and not line.isspace())
]
max_len = block_size - tokenizer.num_special_tokens_to_add(
pair=False)
batch_encoding = tokenizer(lines,
add_special_tokens=True,
truncation=True,
max_length=max_len)
self.examples = batch_encoding["input_ids"]
self.examples = [{
"input_ids": torch.tensor(e, dtype=torch.long)
} for e in self.examples]
with open(cached_features_file, "wb") as handle:
pickle.dump(self.examples,
handle,
protocol=pickle.HIGHEST_PROTOCOL)
def cnlp_convert_examples_to_features(
examples: List[InputExample],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
task=None,
label_list=None,
output_mode=None,
token_classify=False,
):
event_start_ind = tokenizer.convert_tokens_to_ids('<e>')
event_end_ind = tokenizer.convert_tokens_to_ids('</e>')
if max_length is None:
max_length = tokenizer.max_len
if task is not None:
processor = cnlp_processors[task]()
if label_list is None:
label_list = processor.get_labels()
logger.info("Using label list %s for task %s" % (label_list, task))
if output_mode is None:
output_mode = cnlp_output_modes[task]
logger.info("Using output mode %s for task %s" %
(output_mode, task))
label_map = {label: i for i, label in enumerate(label_list)}
def label_from_example(example: InputExample) -> Union[int, float, None]:
if example.label is None:
return None
if output_mode == classification:
try:
return label_map[example.label]
except:
logger.error('Error with example %s' % (example.guid))
raise Exception()
elif output_mode == "regression":
return float(example.label)
elif output_mode == tagging:
return [label_map[label] for label in example.label]
elif output_mode == relex:
return [(int(start_token), int(end_token),
label_map.get(category, 0))
for (start_token, end_token, category) in example.label]
raise KeyError(output_mode)
labels = [label_from_example(example) for example in examples]
if examples[0].text_b is None:
sentences = [example.text_a.split(' ') for example in examples]
else:
sentences = [(example.text_a, example.text_b) for example in examples]
batch_encoding = tokenizer(
sentences,
max_length=max_length,
padding="max_length",
truncation=True,
is_split_into_words=True,
)
# This code has to solve the problem of properly setting labels for word pieces that do not actually need to be tagged.
encoded_labels = []
if output_mode == tagging:
for sent_ind, sent in enumerate(sentences):
sent_labels = []
## FIXME -- this is stupid and won't work outside the roberta encoding
label_ind = 0
for wp_ind, wp in enumerate(batch_encoding[sent_ind].tokens):
if wp.startswith('Ġ') or wp in special_tokens:
sent_labels.append(labels[sent_ind].pop(0))
else:
sent_labels.append(-100)
# if wp_ind in word_inds:
# sent_labels.append(labels[sent_ind][label_ind])
# label_ind += 1
# else:
# sent_labels.append(-100)
encoded_labels.append(np.array(sent_labels))
labels = encoded_labels
elif output_mode == relex:
# start by building a matrix that's N' x N' (word-piece length) with "None" as the default
# for word pairs, and -100 (mask) as the default if one of word pair is a suffix token
out_of_bounds = 0
num_relations = 0
for sent_ind, sent in enumerate(sentences):
num_relations += len(labels[sent_ind])
wpi_to_tokeni = {}
tokeni_to_wpi = {}
sent_labels = np.zeros((max_length, max_length)) - 100
wps = batch_encoding[sent_ind].tokens
sent_len = len(wps)
## FIXME -- this is stupid and won't work outside the roberta encoding
for wp_ind, wp in enumerate(wps):
if wp.startswith('Ġ') or wp in special_tokens:
key = wp_ind
val = len(wpi_to_tokeni)
wpi_to_tokeni[key] = val
tokeni_to_wpi[val] = key
# make every label beween pairs a 0 to start:
for wpi in wpi_to_tokeni.keys():
for wpi2 in wpi_to_tokeni.keys():
# leave the diagonals at -100 because you can't have a relation with itself and we
# don't want to consider it because it may screw up the learning to have 2 such similar
# tokens not involved in a relation.
if wpi != wpi2:
sent_labels[wpi, wpi2] = 0.0
for label in labels[sent_ind]:
if not label[0] in tokeni_to_wpi or not label[
1] in tokeni_to_wpi:
out_of_bounds += 1
continue
wpi1 = tokeni_to_wpi[label[0]]
wpi2 = tokeni_to_wpi[label[1]]
sent_labels[wpi1][wpi2] = label[2]
encoded_labels.append(sent_labels)
labels = encoded_labels
if out_of_bounds > 0:
logging.warn(
'During relation processing, there were %d relations (out of %d total relations) where at least one argument was truncated so the relation could not be trained/predicted.'
% (out_of_bounds, num_relations))
features = []
for i in range(len(examples)):
inputs = {k: batch_encoding[k][i] for k in batch_encoding}
try:
event_start = inputs['input_ids'].index(event_start_ind)
except:
event_start = -1
try:
event_end = inputs['input_ids'].index(event_end_ind)
except:
event_end = len(inputs['input_ids']) - 1
inputs['event_tokens'] = [0] * len(inputs['input_ids'])
if event_start >= 0:
inputs['event_tokens'] = [0] * event_start + [1] * (
event_end - event_start +
1) + [0] * (len(inputs['input_ids']) - event_end - 1)
else:
inputs['event_tokens'] = [1] * len(inputs['input_ids'])
feature = InputFeatures(**inputs, label=[labels[i]])
features.append(feature)
for i, example in enumerate(examples[:5]):
logger.info("*** Example ***")
logger.info("guid: %s" % (example.guid))
logger.info("features: %s" % features[i])
return features
def __init__(
self,
tokenizer: PreTrainedTokenizer,
file_path: str,
block_size: int,
overwrite_cache=False,
short_seq_probability=0.1,
nsp_probability=0.5,
):
assert os.path.isfile(
file_path), f"Input file path {file_path} not found"
self.block_size = block_size - tokenizer.num_special_tokens_to_add(
pair=True)
self.short_seq_probability = short_seq_probability
self.nsp_probability = nsp_probability
directory, filename = os.path.split(file_path)
cached_features_file = os.path.join(
directory,
"cached_nsp_{}_{}_{}".format(
tokenizer.__class__.__name__,
str(block_size),
filename,
),
)
self.tokenizer = tokenizer
lock_path = cached_features_file + ".lock"
with FileLock(lock_path):
if os.path.exists(cached_features_file) and not overwrite_cache:
start = time.time()
with open(cached_features_file, "rb") as handle:
self.examples = pickle.load(handle)
logger.info(
f"Loading features from cached file {cached_features_file} [took %.3f s]",
time.time() - start)
else:
logger.info(
f"Creating features from dataset file at {directory}")
self.documents = [[]]
with open(file_path, encoding="utf-8") as f:
while True:
line = f.readline()
if not line:
break
line = line.strip()
if not line and len(self.documents[-1]) != 0:
self.documents.append([])
tokens = tokenizer.tokenize(line)
tokens = tokenizer.convert_tokens_to_ids(tokens)
if tokens:
self.documents[-1].append(tokens)
logger.info(
f"Creating examples from {len(self.documents)} documents.")
self.examples = []
for doc_index, document in enumerate(self.documents):
self.create_examples_from_document(document, doc_index)
start = time.time()
with open(cached_features_file, "wb") as handle:
pickle.dump(self.examples,
handle,
protocol=pickle.HIGHEST_PROTOCOL)
logger.info(
"Saving features into cached file %s [took %.3f s]",
cached_features_file,
time.time() - start)
def cnlp_convert_examples_to_features(
examples: List[InputExample],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
task=None,
label_list=None,
output_mode=None,
token_classify=False,
inference=False,
hierarchical=False,
chunk_len: int = -1,
num_chunks: int = -1,
cls_id: int = -1,
sep_id: int = -1,
pad_id: int = -1,
insert_empty_chunk_at_beginning: bool = False,
truncate_examples: bool = False,
) -> Union[List[InputFeatures], List[HierarchicalInputFeatures]]:
event_start_ind = tokenizer.convert_tokens_to_ids('<e>')
event_end_ind = tokenizer.convert_tokens_to_ids('</e>')
if max_length is None:
max_length = tokenizer.max_len
if task is not None:
processor = cnlp_processors[task]()
if label_list is None:
label_list = processor.get_labels()
logger.info("Using label list %s for task %s" % (label_list, task))
if output_mode is None:
output_mode = cnlp_output_modes[task]
logger.info("Using output mode %s for task %s" %
(output_mode, task))
label_map = {label: i for i, label in enumerate(label_list)}
def label_from_example(example: InputExample) -> Union[int, float, None]:
if example.label is None:
# give it a random label, if we didn't specify a label with the data we won't be comparing it.
# return list(label_map.values())[0]
return None
if output_mode == classification:
try:
return label_map[example.label]
except:
logger.error('Error with example %s' % (example.guid))
raise Exception()
elif output_mode == "regression":
return float(example.label)
elif output_mode == tagging:
return [label_map[label] for label in example.label]
elif output_mode == relex:
return [(int(start_token), int(end_token),
label_map.get(category, 0))
for (start_token, end_token, category) in example.label]
elif output_mode == mtl:
return [label_map[x] for x in example.label]
raise KeyError(output_mode)
labels = [label_from_example(example) for example in examples]
if examples[0].text_b is None:
sentences = [example.text_a.split(' ') for example in examples]
else:
sentences = [(example.text_a, example.text_b) for example in examples]
batch_encoding = tokenizer(
sentences,
max_length=max_length,
padding="max_length",
truncation=True,
is_split_into_words=True,
)
roberta_based = tokenizer.cls_token == '<s>'
if not roberta_based:
assert tokenizer.cls_token == '[CLS]', 'This tokenizer does not seem to be based on BERT or Roberta -- this will cause errors with the dataset encoding.'
# This code has to solve the problem of properly setting labels for word pieces that do not actually need to be tagged.
if not inference:
encoded_labels = []
if output_mode == tagging:
for sent_ind, sent in enumerate(sentences):
sent_labels = []
## align word-piece tokens to the tokenization we got as input and only assign labels to input tokens
word_ids = batch_encoding.word_ids(batch_index=sent_ind)
previous_word_idx = None
label_ids = []
for word_idx in word_ids:
# Special tokens have a word id that is None. We set the label to -100 so they are automatically
# ignored in the loss function.
if word_idx is None:
label_ids.append(-100)
# We set the label for the first token of each word.
elif word_idx != previous_word_idx:
label_ids.append(labels[sent_ind][word_idx])
# For the other tokens in a word, we set the label to either the current label or -100, depending on
# the label_all_tokens flag.
else:
label_ids.append(-100)
previous_word_idx = word_idx
encoded_labels.append(np.array(label_ids))
labels = encoded_labels
elif output_mode == relex:
# start by building a matrix that's N' x N' (word-piece length) with "None" as the default
# for word pairs, and -100 (mask) as the default if one of word pair is a suffix token
out_of_bounds = 0
num_relations = 0
for sent_ind, sent in enumerate(sentences):
word_ids = batch_encoding.word_ids(batch_index=sent_ind)
num_relations += len(labels[sent_ind])
wpi_to_tokeni = {}
tokeni_to_wpi = {}
sent_labels = np.zeros((max_length, max_length)) - 100
## align word-piece tokens to the tokenization we got as input and only assign labels to input tokens
previous_word_idx = None
for word_pos_idx, word_idx in enumerate(word_ids):
if word_idx != previous_word_idx and word_idx is not None:
key = word_pos_idx
val = len(wpi_to_tokeni)
wpi_to_tokeni[key] = val
tokeni_to_wpi[val] = key
previous_word_idx = word_idx
# make every label beween pairs a 0 to start:
for wpi in wpi_to_tokeni.keys():
for wpi2 in wpi_to_tokeni.keys():
# leave the diagonals at -100 because you can't have a relation with itself and we
# don't want to consider it because it may screw up the learning to have 2 such similar
# tokens not involved in a relation.
if wpi != wpi2:
sent_labels[wpi, wpi2] = 0.0
for label in labels[sent_ind]:
if not label[0] in tokeni_to_wpi or not label[
1] in tokeni_to_wpi:
out_of_bounds += 1
continue
wpi1 = tokeni_to_wpi[label[0]]
wpi2 = tokeni_to_wpi[label[1]]
sent_labels[wpi1][wpi2] = label[2]
encoded_labels.append(sent_labels)
labels = encoded_labels
if out_of_bounds > 0:
logging.warn(
'During relation processing, there were %d relations (out of %d total relations) where at least one argument was truncated so the relation could not be trained/predicted.'
% (out_of_bounds, num_relations))
features = []
for i in range(len(examples)):
inputs = {k: batch_encoding[k][i] for k in batch_encoding}
try:
event_start = inputs['input_ids'].index(event_start_ind)
except:
event_start = -1
try:
event_end = inputs['input_ids'].index(event_end_ind)
except:
event_end = len(inputs['input_ids']) - 1
inputs['event_tokens'] = [0] * len(inputs['input_ids'])
if event_start >= 0:
inputs['event_tokens'] = [0] * event_start + [1] * (
event_end - event_start +
1) + [0] * (len(inputs['input_ids']) - event_end - 1)
else:
inputs['event_tokens'] = [1] * len(inputs['input_ids'])
if inference:
label = None
else:
label = [labels[i]]
feature = InputFeatures(**inputs, label=label)
if hierarchical:
feature = cnlp_convert_features_to_hierarchical(
feature,
chunk_len=chunk_len,
num_chunks=num_chunks,
cls_id=cls_id,
sep_id=sep_id,
pad_id=pad_id,
insert_empty_chunk_at_beginning=insert_empty_chunk_at_beginning,
)
features.append(feature)
for i, example in enumerate(examples[:5]):
logger.info("*** Example ***")
logger.info("guid: %s" % (example.guid))
logger.info("features: %s" % truncate_features(features[i])
if truncate_examples else features[i])
return features
def prepare_prompts(
cls,
prompts: PromptTemplateConfig,
tokenizer: PreTrainedTokenizer,
default_init: Union[str, bool] = None,
) -> PromptTemplate:
if not isinstance(default_init, str):
default_init = None
prompt_tokens: List[Optional[Token]] = []
prompt_to_id: Dict[str, int] = dict()
prompt_to_init: Dict[str, int] = dict()
for prompt in prompts:
if prompt is None:
prompt_tokens.append(None)
continue
# We initialize with the default initializer unless stated otherwise
init_with = default_init
# If an tuple/list is given, the second argument is the custom initializer
if isinstance(prompt, (tuple, list)):
prompt, init_with = prompt
# If an integer is given, we need to covert it into a token
if isinstance(prompt, int):
# If the index is -1 we treat it as `[MASK]` token
if prompt < 0:
# assert tokenizer.mask_token_id is not None
# prompt = tokenizer.mask_token_id
prompt += tokenizer.vocab_size
assert (prompt not in tokenizer.all_special_ids
), "Do not hardcode special IDs"
# Then we convert it into a wordpiece
prompt = tokenizer.convert_ids_to_tokens(prompt)
assert isinstance(prompt, str)
if prompt in ["[MASK]", "<mask>"]:
prompt = tokenizer.mask_token
prompt = cls.get_space_aware_token(prompt, tokenizer)
# if prompt.startswith(' '):
# prompt = self.metaspace + prompt[1:]
# TODO let's make sure t
prompt_id: int = tokenizer.convert_tokens_to_ids(prompt)
assert (prompt_id != tokenizer.unk_token_id
), "Using UNK not implemented yet, may be tricky"
prompt_tokens.append(
Token(
text=prompt,
text_id=prompt_id,
type_id=0,
idx=None,
idx_end=None,
))
prompt_to_id[prompt] = prompt_id
if init_with is not None:
# if init_with in ['[MASK]', '<mask>']:
# init_with = tokenizer.mask_token
init_with = cls.get_space_aware_token(init_with, tokenizer)
prompt_to_init[prompt] = tokenizer.convert_tokens_to_ids(
init_with)
return PromptTemplate(prompt_tokens, prompt_to_id, prompt_to_init)
def convert_examples_to_features(
examples: List[InputExample],
label_list: List[str],
max_seq_length: int,
tokenizer: PreTrainedTokenizer,
cls_token_at_end=False,
cls_token="[CLS]",
cls_token_segment_id=1,
sep_token="[SEP]",
sep_token_extra=False,
pad_on_left=False,
pad_token=0,
pad_token_segment_id=0,
pad_token_label_id=-100,
sequence_a_segment_id=0,
mask_padding_with_zero=True,
) -> List[InputFeatures]:
"""Loads a data file into a list of `InputFeatures`
`cls_token_at_end` define the location of the CLS token:
- False (Default, BERT/XLM pattern): [CLS] + A + [SEP] + B + [SEP]
- True (XLNet/GPT pattern): A + [SEP] + B + [SEP] + [CLS]
`cls_token_segment_id` define the segment id associated to the CLS token (0 for BERT, 2 for XLNet)
"""
# TODO clean up all this to leverage built-in features of tokenizers
label_map = {label: i for i, label in enumerate(label_list)}
features = []
for (ex_index, example) in enumerate(examples):
if ex_index % 10_000 == 0:
logger.info("Writing example %d of %d", ex_index, len(examples))
tokens = []
label_ids = []
for word, label in zip(example.words, example.labels):
word_tokens = tokenizer.tokenize(word)
# bert-base-multilingual-cased sometimes output "nothing ([]) when calling tokenize with just a space.
if len(word_tokens) > 0:
tokens.extend(word_tokens)
# Use the real label id for the first token of the word, and padding ids for the remaining tokens
label_ids.extend([label_map[label]] + [pad_token_label_id] * (len(word_tokens) - 1))
# Account for [CLS] and [SEP] with "- 2" and with "- 3" for RoBERTa.
special_tokens_count = tokenizer.num_special_tokens_to_add()
if len(tokens) > max_seq_length - special_tokens_count:
tokens = tokens[: (max_seq_length - special_tokens_count)]
label_ids = label_ids[: (max_seq_length - special_tokens_count)]
# The convention in BERT is:
# (a) For sequence pairs:
# tokens: [CLS] is this jack ##son ##ville ? [SEP] no it is not . [SEP]
# type_ids: 0 0 0 0 0 0 0 0 1 1 1 1 1 1
# (b) For single sequences:
# tokens: [CLS] the dog is hairy . [SEP]
# type_ids: 0 0 0 0 0 0 0
#
# Where "type_ids" are used to indicate whether this is the first
# sequence or the second sequence. The embedding vectors for `type=0` and
# `type=1` were learned during pre-training and are added to the wordpiece
# embedding vector (and position vector). This is not *strictly* necessary
# since the [SEP] token unambiguously separates the sequences, but it makes
# it easier for the model to learn the concept of sequences.
#
# For classification tasks, the first vector (corresponding to [CLS]) is
# used as as the "sentence vector". Note that this only makes sense because
# the entire model is fine-tuned.
tokens += [sep_token]
label_ids += [pad_token_label_id]
if sep_token_extra:
# roberta uses an extra separator b/w pairs of sentences
tokens += [sep_token]
label_ids += [pad_token_label_id]
segment_ids = [sequence_a_segment_id] * len(tokens)
if cls_token_at_end:
tokens += [cls_token]
label_ids += [pad_token_label_id]
segment_ids += [cls_token_segment_id]
else:
tokens = [cls_token] + tokens
label_ids = [pad_token_label_id] + label_ids
segment_ids = [cls_token_segment_id] + segment_ids
input_ids = tokenizer.convert_tokens_to_ids(tokens)
# The mask has 1 for real tokens and 0 for padding tokens. Only real
# tokens are attended to.
input_mask = [1 if mask_padding_with_zero else 0] * len(input_ids)
# Zero-pad up to the sequence length.
padding_length = max_seq_length - len(input_ids)
if pad_on_left:
input_ids = ([pad_token] * padding_length) + input_ids
input_mask = ([0 if mask_padding_with_zero else 1] * padding_length) + input_mask
segment_ids = ([pad_token_segment_id] * padding_length) + segment_ids
label_ids = ([pad_token_label_id] * padding_length) + label_ids
else:
input_ids += [pad_token] * padding_length
input_mask += [0 if mask_padding_with_zero else 1] * padding_length
segment_ids += [pad_token_segment_id] * padding_length
label_ids += [pad_token_label_id] * padding_length
assert len(input_ids) == max_seq_length
assert len(input_mask) == max_seq_length
assert len(segment_ids) == max_seq_length
assert len(label_ids) == max_seq_length
if ex_index < 5:
logger.info("*** Example ***")
logger.info("guid: %s", example.guid)
logger.info("tokens: %s", " ".join([str(x) for x in tokens]))
logger.info("input_ids: %s", " ".join([str(x) for x in input_ids]))
logger.info("input_mask: %s", " ".join([str(x) for x in input_mask]))
logger.info("segment_ids: %s", " ".join([str(x) for x in segment_ids]))
logger.info("label_ids: %s", " ".join([str(x) for x in label_ids]))
if "token_type_ids" not in tokenizer.model_input_names:
segment_ids = None
features.append(
InputFeatures(
input_ids=input_ids, attention_mask=input_mask, token_type_ids=segment_ids, label_ids=label_ids
)
)
def __init__(self, tokenizer: PreTrainedTokenizer, file_path: str, block_size: int, local_rank=-1):
self.examples = []
self.keywords = label_mapping["keyword"]
self.label_eos_id = self.keywords.index(label_mapping["label_eos_token"])
self.label_bos_id = self.keywords.index(label_mapping["label_bos_token"])
add_prefix_space = isinstance(tokenizer, BartTokenizer) or isinstance(tokenizer, RobertaTokenizer)
total, valid = 0, 0
with open(file_path, encoding="utf-8") as f:
for line in tqdm(f):
total += 1
example = json.loads(line)
text = example["normalized_question"]
columns = example["columns"]
tables = example["tables"]
columns_text = example["column_text"]
tables_text = example["table_text"]
sql = example["sql"]
# we need the adjusted token index info.
token_idx_to_sub_token_start_idx = {}
text_tokens = [tokenizer.cls_token]
start_idx = 0 # This is for adjusting the sc_link and cv_link
for idx, token in enumerate(text.split()):
sub_tokens = tokenizer.tokenize(token, add_prefix_space=add_prefix_space)
token_idx_to_sub_token_start_idx[idx] = start_idx
text_tokens.extend(sub_tokens)
start_idx += len(sub_tokens)
text_tokens.append(tokenizer.sep_token)
question_start, question_end = 1, len(text_tokens) - 1 # exclusive
column_spans = []
start_idx = len(text_tokens)
for column_tokens in columns_text:
column_str = " ".join(column_tokens)
column_tokens = tokenizer.tokenize(column_str, add_prefix_space=add_prefix_space)
text_tokens.extend(column_tokens)
text_tokens.append(tokenizer.sep_token)
end_idx = start_idx + len(column_tokens)
column_spans.append((start_idx, end_idx))
start_idx = end_idx + 1
column_start = [column_span[0] for column_span in column_spans]
column_end = [column_span[1] for column_span in column_spans]
table_spans = []
start_idx = len(text_tokens)
for table_tokens in tables_text:
table_str = " ".join(table_tokens)
table_tokens = tokenizer.tokenize(table_str, add_prefix_space=add_prefix_space)
text_tokens.extend(table_tokens)
text_tokens.append(tokenizer.sep_token)
end_idx = start_idx + len(table_tokens)
table_spans.append((start_idx, end_idx))
start_idx = end_idx + 1
table_start = [table_span[0] for table_span in table_spans]
table_end = [table_span[1] for table_span in table_spans]
input_ids = tokenizer.convert_tokens_to_ids(text_tokens)
if len(input_ids) > block_size:
continue
label_ids = []
try:
for token in sql.split():
if token in columns:
label_ids.append(columns.index(token) + len(self.keywords))
else:
label_ids.append(self.keywords.index(token))
except:
continue
label_ids = [self.label_bos_id] + label_ids + [self.label_eos_id]
primary_key = [int(x) for x in example["sc_struct"]["primary_key"]]
foreign_key = {x.split(",")[0]: int(x.split(",")[1]) for x in example["sc_struct"]["foreign_key"]}
column_to_table = {"0": None}
sc_link = {"q_col_match": {}, "q_tab_match": {}}
for k, v in example["sc_link"]["q_col_match"].items():
new_k = str(token_idx_to_sub_token_start_idx[int(k.split(",")[0])]) + "," + k.split(",")[1]
sc_link["q_col_match"][new_k] = v
for k, v in example["sc_link"]["q_tab_match"].items():
new_k = str(token_idx_to_sub_token_start_idx[int(k.split(",")[0])]) + "," + k.split(",")[1]
sc_link["q_tab_match"][new_k] = v
cv_link = {"num_date_match": {}, "cell_match": {}}
for k, v in example["cv_link"]["num_date_match"].items():
new_k = str(token_idx_to_sub_token_start_idx[int(k.split(",")[0])]) + "," + k.split(",")[1]
cv_link["num_date_match"][new_k] = v
for k, v in example["cv_link"]["cell_match"].items():
new_k = str(token_idx_to_sub_token_start_idx[int(k.split(",")[0])]) + "," + k.split(",")[1]
cv_link["cell_match"][new_k] = v
for idx, column in enumerate(columns):
if column == "*":
continue
t = column.split(".")[0]
column_to_table[str(idx)] = tables.index(t)
foreign_keys_tables = {}
for k, v in foreign_key.items():
t_k = str(column_to_table[str(k)])
t_v = str(column_to_table[str(v)])
if t_k not in foreign_keys_tables:
foreign_keys_tables[t_k] = []
if int(t_v) not in foreign_keys_tables[t_k]:
foreign_keys_tables[t_k].append(int(t_v))
self.examples.append({
"input_ids": input_ids,
"example_info": {
"normalized_question": text,
"columns": columns,
"tables": tables,
"tokens": text_tokens,
"question_start": question_start,
"question_end": question_end,
"column_start": torch.LongTensor(column_start),
"column_end": torch.LongTensor(column_end),
"table_start": torch.LongTensor(table_start),
"table_end": torch.LongTensor(table_end),
"sc_link": sc_link,
"cv_link": cv_link,
"primary_keys": primary_key,
"foreign_keys": foreign_key,
"column_to_table": column_to_table,
"foreign_keys_tables": foreign_keys_tables
},
"column_spans": column_spans,
"label_ids": label_ids})
valid += 1
print("Valid Example {}; Invalid Example {}".format(valid, total - valid))