def stanford_parser(sentences, proc_id=0):
# print('Im stanford parsing process'+proc_id)
if os.path.exists('data/.tmp'+proc_id):
shutil.rmtree('data/.tmp'+proc_id)
os.makedirs('data/.tmp'+proc_id) # create a temperal dir for parsing large paragraphs
for sent_id in sentences.keys():
f = io.open(os.path.join('data/.tmp'+proc_id, sent_id), 'w', -1, 'utf-8')
f.write(sentences[sent_id])
f.close()
parsing_result = list(batch_parse('data/.tmp'+proc_id,
os.path.join(os.environ['CN_SF_PATH'],
'externals/stanford-corenlp-full-2014-08-27/'),
properties="StanfordCoreNLP-chinese.properties",
))
result = dict()
for r in parsing_result:
result[r['file_name']] = r['sentences'][0]
return result
def stanford_parser(sentences, proc_id=0):
# print('Im stanford parsing process'+proc_id)
if os.path.exists('data/.tmp'+proc_id):
shutil.rmtree('data/.tmp'+proc_id)
os.makedirs('data/.tmp'+proc_id) # create a temperal dir for parsing large paragraphs
for sent_id in sentences.keys():
f = io.open(os.path.join('data/.tmp'+proc_id, sent_id), 'w', -1, 'utf-8')
f.write(sentences[sent_id])
f.close()
stanford_parser_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'../../externals/stanford-corenlp-full-2014-08-27/')
parsing_result = list(batch_parse('data/.tmp'+proc_id,
stanford_parser_dir,
properties=os.path.join(stanford_parser_dir, "StanfordCoreNLP-chinese.properties")
))
result = dict()
for r in parsing_result:
result[r['file_name']] = r['sentences'][0]
return result
def evidence_extaction(self):
# ************* batch segment long article ************* #
start = time.time()
if os.path.exists('data/.tmp/'):
shutil.rmtree('data/.tmp')
os.makedirs('data/.tmp/') # create a temperal dir for parsing large paragraphs
for doc_id in self.cleaned_docs:
f = io.open(os.path.join('data/.tmp', doc_id), 'w', -1, 'utf-8')
f.write(self.cleaned_docs[doc_id])
f.close()
# run stanford segmenter
stanford_nlp_dir = os.path.join(self.CN_SF_PATH,
'externals/stanford-corenlp-full-2014-08-27/')
segmenter_result = list(batch_parse('data/.tmp/',
stanford_nlp_dir,
properties=os.path.join(stanford_nlp_dir,
"StanfordCoreNLP-chinese.Segmenter.properties")
))
for r in segmenter_result:
self.segmented_docs[r['file_name']] = r['sentences']
print('segmenting time cost '+str(time.time()-start))
# cpickle for development
# cPickle.dump(self.segmented_docs, open('data/segmented_docs.pkl', 'wb'))
# self.segmented_docs = cPickle.load(open('data/segmented_docs.pkl', 'rb'))
# ************* select evidence ************* #
sent_to_parse = dict()
self.evidence = OrderedDict()
for query in self.queries:
print('\textracting ' + query.name)
evidences = OrderedDict() # {slot_type: sentence_parsed_result}
for doc_id in self.query_docs[query.id].keys():
seg_result = self.segmented_docs[doc_id]
for i in xrange(len(seg_result)): # sentence is stanford standard format output
sentence = seg_result[i]
sent_id = '|'.join([doc_id, str(i)])
# if sentence is too long or too short, it carries less dependency information
if len(sentence['words']) > 130 or len(sentence['words']) < 3:
continue
sent_text = ''.join(sentence['text'])
# *************** check if this sentence is an evidence ******************** #
# ============== common case ============= #
seg_sent_text = sentence['text'] # list of tokens
seg_sent_text = [jianfan.ftoj(w) for w in seg_sent_text]
# here joining s['text'] list will overcome segmentation errors
if query.name not in ''.join(seg_sent_text):
continue
triggers = self.triggers[query.entity_type]
if query.entity_type == 'PER':
slot_types = self.PER_SLOT_TYPE
elif query.entity_type == 'ORG':
slot_types = self.ORG_SLOT_TYPE
for slot_type in slot_types:
if slot_type not in evidences.keys():
evidences[slot_type] = []
for t in triggers[slot_type]:
# compare triggers to words by segmentation, might affected by segmentation errors
if t not in seg_sent_text:
continue
evidences[slot_type].append(Evidence(doc_id, query.id, t, sent_text, sent_id))
sent_to_parse[sent_id] = sent_text # add sentence and do parallel parsing later.
# ============== special case ============== #
if query.entity_type == 'PER':
evidences['per:alternate_names'].append(Evidence(doc_id, query.id, '',
sent_text, sent_id, sentence))
if query.entity_type == 'ORG':
# for org:alternate_names, the article contains the query is evidence, for pattern match
evidences['org:alternate_names'].append(Evidence(doc_id, query.id, '',
sent_text, sent_id, sentence))
# for org:XXX_headquarters, the article contains the query is evidence, for pattern match
evidences['org:country_of_headquarters'].append((Evidence(doc_id, query.id, '',
sent_text, sent_id, sentence)))
evidences['org:stateorprovince_of_headquarters'].append((Evidence(doc_id, query.id, '',
sent_text, sent_id, sentence)))
evidences['org:city_of_headquarters'].append((Evidence(doc_id, query.id, '',
sent_text, sent_id, sentence)))
self.evidence[query.id] = evidences
# *************** parallel parsing ****************** #
def chunkIt(seq, num):
avg = len(seq) / float(num)
out = []
last = 0.0
while last < len(seq):
out.append(seq[int(last):int(last + avg)])
last += avg
return out
# run stanford parser in multiprocessing
process_num = multiprocessing.cpu_count() / 2 if multiprocessing.cpu_count() / 2 < 10 else 10
p = multiprocessing.Pool(processes=process_num)
chunked_sent = [dict(item) for item in chunkIt(sent_to_parse.items(), process_num)]
mp_result = [p.apply_async(stanford_parser,
args=(chunked_sent[i], str(i))) for i in range(process_num)]
mp_result = [p.get() for p in mp_result]
sent_parsing_result = {}
for r in mp_result:
sent_parsing_result.update(r)
# cpickle for development
# cPickle.dump(sent_parsing_result, open('data/sent_parsing_result.pkl', 'wb'))
# sent_parsing_result = cPickle.load(open('data/sent_parsing_result.pkl', 'rb'))
# updating evidences
for q_id in self.evidence.keys():
evidences = self.evidence[q_id]
for slot_type in evidences.keys():
for e in evidences[slot_type]:
if not e.trigger:
continue
e.parse_result = sent_parsing_result[e.sent_id]
# *************** correct segmenter error ******************** #
china_province_city = cPickle.load(open('data/dict/china_province_city.pkl', 'rb'))
province_city_list = []
for p in china_province_city:
province_city_list += [p['name']]
for c in p['sub']:
province_city_list += [c['name']]
if p['type'] == 0:
continue
for d in c['sub']:
province_city_list += [d['name']]
for q_id in self.evidence.keys():
for slot_type in self.evidence[q_id]:
for i in xrange(len(self.evidence[q_id][slot_type])):
self.evidence[q_id][slot_type][i] = self.correct_evidence(self.find_query(q_id).name,
self.evidence[q_id][slot_type][i])
for p_or_c in province_city_list:
if len(p_or_c) > 2 and p_or_c in \
''.join(self.evidence[q_id][slot_type][i].parse_result['text']):
self.evidence[q_id][slot_type][i] = \
self.correct_evidence(p_or_c, self.evidence[q_id][slot_type][i])
print('Done')
