def merge_pos_into_con(doc: Document):
flat = isinstance(doc['pos'][0], str)
if flat:
doc = Document((k, [v]) for k, v in doc.items())
for tree, tags in zip(doc['con'], doc['pos']):
offset = 0
for subtree in tree.subtrees(lambda t: t.height() == 2):
tag = subtree.label()
if tag == '_':
subtree.set_label(tags[offset])
offset += 1
if flat:
doc = doc.squeeze()
return doc
def predict(self,
data: Union[str, List[str]],
batch_size: int = None,
tasks: Optional[Union[str, List[str]]] = None,
skip_tasks: Optional[Union[str, List[str]]] = None,
resolved_tasks=None,
**kwargs) -> Document:
"""Predict on data.
Args:
data: A sentence or a list of sentences.
batch_size: Decoding batch size.
tasks: The tasks to predict.
skip_tasks: The tasks to skip.
resolved_tasks: The resolved tasks to override ``tasks`` and ``skip_tasks``.
**kwargs: Not used.
Returns:
A :class:`~hanlp_common.document.Document`.
"""
doc = Document()
if not data:
return doc
target_tasks = resolved_tasks or self.resolve_tasks(tasks, skip_tasks)
flatten_target_tasks = [
self.tasks[t] for group in target_tasks for t in group
]
cls_is_bos = any([x.cls_is_bos for x in flatten_target_tasks])
sep_is_eos = any([x.sep_is_eos for x in flatten_target_tasks])
# Now build the dataloaders and execute tasks
first_task_name: str = list(target_tasks[0])[0]
first_task: Task = self.tasks[first_task_name]
encoder_transform, transform = self.build_transform(first_task)
# Override the tokenizer config of the 1st task
encoder_transform.sep_is_eos = sep_is_eos
encoder_transform.cls_is_bos = cls_is_bos
average_subwords = self.model.encoder.average_subwords
flat = first_task.input_is_flat(data)
if flat:
data = [data]
device = self.device
samples = first_task.build_samples(data,
cls_is_bos=cls_is_bos,
sep_is_eos=sep_is_eos)
dataloader = first_task.build_dataloader(samples,
transform=transform,
device=device)
results = defaultdict(list)
order = []
for batch in dataloader:
order.extend(batch[IDX])
# Run the first task, let it make the initial batch for the successors
output_dict = self.predict_task(first_task,
first_task_name,
batch,
results,
run_transform=True,
cls_is_bos=cls_is_bos,
sep_is_eos=sep_is_eos)
# Run each task group in order
for group_id, group in enumerate(target_tasks):
# We could parallelize this in the future
for task_name in group:
if task_name == first_task_name:
continue
output_dict = self.predict_task(self.tasks[task_name],
task_name,
batch,
results,
output_dict,
run_transform=True,
cls_is_bos=cls_is_bos,
sep_is_eos=sep_is_eos)
if group_id == 0:
# We are kind of hard coding here. If the first task is a tokenizer,
# we need to convert the hidden and mask to token level
if first_task_name.startswith('tok'):
spans = []
tokens = []
for span_per_sent, token_per_sent in zip(
output_dict[first_task_name]['prediction'],
results[first_task_name][-len(batch[IDX]):]):
if cls_is_bos:
span_per_sent = [(-1, 0)] + span_per_sent
token_per_sent = [BOS] + token_per_sent
if sep_is_eos:
span_per_sent = span_per_sent + [
(span_per_sent[-1][0] + 1,
span_per_sent[-1][1] + 1)
]
token_per_sent = token_per_sent + [EOS]
# The offsets start with 0 while [CLS] is zero
if average_subwords:
span_per_sent = [
list(range(x[0] + 1, x[1] + 1))
for x in span_per_sent
]
else:
span_per_sent = [
x[0] + 1 for x in span_per_sent
]
spans.append(span_per_sent)
tokens.append(token_per_sent)
spans = PadSequenceDataLoader.pad_data(spans,
0,
torch.long,
device=device)
output_dict['hidden'] = pick_tensor_for_each_token(
output_dict['hidden'], spans, average_subwords)
batch['token_token_span'] = spans
batch['token'] = tokens
# noinspection PyTypeChecker
batch['token_length'] = torch.tensor(
[len(x) for x in tokens],
dtype=torch.long,
device=device)
batch.pop('mask', None)
# Put results into doc in the order of tasks
for k in self.config.task_names:
v = results.get(k, None)
if v is None:
continue
doc[k] = reorder(v, order)
# Allow task to perform finalization on document
for group in target_tasks:
for task_name in group:
task = self.tasks[task_name]
task.finalize_document(doc, task_name)
# If no tok in doc, use raw input as tok
if not any(k.startswith('tok') for k in doc):
doc['tok'] = data
if flat:
for k, v in list(doc.items()):
doc[k] = v[0]
# If there is only one field, don't bother to wrap it
# if len(doc) == 1:
# return list(doc.values())[0]
return doc