mirror of
https://github.com/explosion/spaCy.git
synced 2024-12-29 11:26:28 +03:00
117 lines
3.6 KiB
Python
117 lines
3.6 KiB
Python
from __future__ import unicode_literals
|
|
import os
|
|
from os import path
|
|
import re
|
|
|
|
|
|
def split(text):
|
|
"""Split an annotation file by sentence. Each sentence's annotation should
|
|
be a single string."""
|
|
return text.strip().split('\n')[1:-1]
|
|
|
|
|
|
def parse(string, strip_bad_periods=False):
|
|
"""Given a sentence's annotation string, return a list of word strings,
|
|
and a list of named entities, where each entity is a (start, end, label)
|
|
triple."""
|
|
tokens = []
|
|
tags = []
|
|
open_tag = None
|
|
# Arbitrary corrections to promote alignment, and ensure that entities
|
|
# begin at a space. This allows us to treat entities as tokens, making it
|
|
# easier to return the list of entities.
|
|
string = string.replace('... .', '...')
|
|
string = string.replace('U.S.</ENAMEX> .', 'U.S.</ENAMEX>')
|
|
string = string.replace('Co.</ENAMEX> .', 'Co.</ENAMEX>')
|
|
string = string.replace('U.S. .', 'U.S.')
|
|
string = string.replace('<ENAMEX ', '<ENAMEX')
|
|
string = string.replace(' E_OFF="', 'E_OFF="')
|
|
string = string.replace(' S_OFF="', 'S_OFF="')
|
|
string = string.replace('units</ENAMEX>-<ENAMEX', 'units</ENAMEX> - <ENAMEX')
|
|
string = string.replace('<ENAMEXTYPE="PERSON"E_OFF="1">Paula</ENAMEX> Zahn', 'Paula Zahn')
|
|
string = string.replace('<ENAMEXTYPE="CARDINAL"><ENAMEXTYPE="CARDINAL">little</ENAMEX> drain</ENAMEX>', 'little drain')
|
|
for substr in string.strip().split():
|
|
substr = _fix_inner_entities(substr)
|
|
tokens.append(_get_text(substr))
|
|
try:
|
|
tag, open_tag = _get_tag(substr, open_tag)
|
|
except:
|
|
raise
|
|
tags.append(tag)
|
|
return tokens, tags
|
|
|
|
|
|
tag_re = re.compile(r'<ENAMEXTYPE="[^"]+">')
|
|
def _fix_inner_entities(substr):
|
|
tags = tag_re.findall(substr)
|
|
if '</ENAMEX' in substr and not substr.endswith('</ENAMEX'):
|
|
substr = substr.replace('</ENAMEX>', '') + '</ENAMEX>'
|
|
if tags:
|
|
substr = tag_re.sub('', substr)
|
|
return tags[0] + substr
|
|
else:
|
|
return substr
|
|
|
|
|
|
def _get_tag(substr, tag):
|
|
if substr.startswith('<'):
|
|
tag = substr.split('"')[1]
|
|
if substr.endswith('>'):
|
|
return 'U-' + tag, None
|
|
else:
|
|
return 'B-%s' % tag, tag
|
|
elif substr.endswith('>'):
|
|
return 'L-' + tag, None
|
|
elif tag is not None:
|
|
return 'I-' + tag, tag
|
|
else:
|
|
return 'O', None
|
|
|
|
|
|
def _get_text(substr):
|
|
if substr.startswith('<'):
|
|
substr = substr.split('>', 1)[1]
|
|
if substr.endswith('>'):
|
|
substr = substr.split('<')[0]
|
|
return reform_string(substr)
|
|
|
|
|
|
def tags_to_entities(tags):
|
|
entities = []
|
|
start = None
|
|
for i, tag in enumerate(tags):
|
|
if tag.startswith('O'):
|
|
# TODO: We shouldn't be getting these malformed inputs. Fix this.
|
|
if start is not None:
|
|
start = None
|
|
continue
|
|
elif tag == '-':
|
|
continue
|
|
elif tag.startswith('I'):
|
|
assert start is not None, tags[:i]
|
|
continue
|
|
if tag.startswith('U'):
|
|
entities.append((tag[2:], i, i))
|
|
elif tag.startswith('B'):
|
|
start = i
|
|
elif tag.startswith('L'):
|
|
entities.append((tag[2:], start, i))
|
|
start = None
|
|
else:
|
|
raise Exception(tag)
|
|
return entities
|
|
|
|
|
|
def reform_string(tok):
|
|
tok = tok.replace("``", '"')
|
|
tok = tok.replace("`", "'")
|
|
tok = tok.replace("''", '"')
|
|
tok = tok.replace('\\', '')
|
|
tok = tok.replace('-LCB-', '{')
|
|
tok = tok.replace('-RCB-', '}')
|
|
tok = tok.replace('-RRB-', ')')
|
|
tok = tok.replace('-LRB-', '(')
|
|
tok = tok.replace("'T-", "'T")
|
|
tok = tok.replace('-AMP-', '&')
|
|
return tok
|