candidate_scores = [(score, remove_str_postags(cand)) for score, cand in candidate_scores]
stoplist = binom_stoplist(0.2) # 0.5 buen valor
# stoplist = log_likelihood_stoplist(5)
candidate_scores = stoplist_filter(candidate_scores, stoplist)
return candidate_scores
if __name__ == "__main__":
terms = load_terms()
domain_sents = load_analysis()
train_terms, test_corpus, test_terms = split_train_test(domain_sents, terms)
candidates = main(train_terms, test_corpus)
candidates = [word for word, score in candidates]
print "[C]", len(candidates)
print "[T]", len(set(candidates).intersection(set(test_terms)))
print "======"
precision, recall = evaluation.precision_recall(test_terms, candidates)
print "[P]", round(precision, 3)
print "[R]", round(recall, 3)
print "======"
precision_by_segment = evaluation.precision_by_segments(test_terms, candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print "[%s] %s" % (i + 1, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(test_terms, candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
candidates.items(), key=lambda x: x[1], reverse=True)]
with open('cvalue.txt', 'w') as f:
new_cands = []
for c in sorted_candidates:
newc = '%.5f\t%s' % (c[1], c[0])
new_cands.append(newc)
f.write('\n'.join(new_cands).encode('utf-8'))
sorted_candidates = [cand for cand, score in sorted_candidates]
print '\nC-VALUE'
print '========'
print '[C]', len(sorted_candidates)
print '[T]', len(set(sorted_candidates).intersection(set(terms)))
print '========'
precision, recall = evaluation.precision_recall(terms, sorted_candidates)
print '[P]', round(precision, 3)
print '[R]', round(recall, 3)
print '========'
precision_by_segment = evaluation.precision_by_segments(
terms, sorted_candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
terms, sorted_candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
cvalue_top = [c for c in sorted_candidates[:int(len(candidates) * 0.2)]]
context_words = make_contextword_weight_dict(cvalue_top, domain_corpus,
['NC', 'AQ', 'VM'], 5)
def main(loglike_threshold):
term_corp = load_terms()
anal_corp = load_analysis()
random.shuffle(anal_corp)
train_corp = anal_corp[:int(0.5*len(anal_corp))]
train_terms = []
for sent in train_corp:
for term in term_corp:
if term.lower() in ' '.join(sent).lower():
train_terms.append(term)
train_terms = [t for t in train_terms if t]
test_corp = anal_corp[int(0.5*len(anal_corp)):]
test_terms = []
for sent in test_corp:
for term in term_corp:
if term.lower() in ' '.join(sent).lower():
test_terms.append(term)
test_terms = [remove_str_postags(t) for t in test_terms if t]
term_model = make_term_model(train_terms)
gen_corp = load_general()
gen_model = make_general_model(gen_corp)
candidate_scores = []
pos_patterns = term_model['pos_freq'].keys()
for pos_seq in pos_patterns:
syn_coef = calc_syntactic_coef(pos_seq, term_model)
chunks = chunk_sents(pos_seq, test_corp)
chunk_freq_dict = defaultdict(int)
for chnk in chunks:
chunk_freq_dict[chnk] += 1
accepted_phrases = chunk_freq_dict
for candidate in accepted_phrases.keys():
cand_freq = chunk_freq_dict[candidate]
lex_coef = calc_lexical_coef(candidate, term_model, gen_model)
morph_coef = calc_morph_coef(candidate, term_model, gen_model)
candidate_coef = cand_freq * syn_coef * lex_coef * morph_coef
candidate_scores.append((candidate_coef, candidate),)
candidate_scores = sorted(candidate_scores, reverse=True)
candidates = [cand for score, cand in candidate_scores]
stripped_candidates = []
for cand in candidates:
new_cand = remove_str_postags(cand)
stripped_candidates.append(new_cand)
stoplist = loglike_stoplist(loglike_threshold)
accepted_candidates, rejected_candidates = \
filter_out(stripped_candidates, stoplist)
precision, recall = \
evaluation.precision_recall(test_terms, accepted_candidates)
print '\nNAZAR'
print '=========='
print '[P]', round(precision, 3)
print '[R]', round(recall, 3)
print '=========='
precision_by_segment = evaluation.precision_by_segments(
test_terms, accepted_candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
test_terms, accepted_candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
return candidates
candidates.items(), key=lambda x: x[1], reverse=True)]
with open('cvalue.txt', 'w') as f:
new_cands = []
for c in sorted_candidates:
newc = '%.5f\t%s' % (c[1], c[0])
new_cands.append(newc)
f.write('\n'.join(new_cands).encode('utf-8'))
sorted_candidates = [cand for cand, score in sorted_candidates]
print '\nC-VALUE'
print '========'
print '[C]', len(sorted_candidates)
print '[T]', len(set(sorted_candidates).intersection(set(terms)))
print '========'
precision, recall = evaluation.precision_recall(terms, sorted_candidates)
print '[P]', round(precision, 3)
print '[R]', round(recall, 3)
print '========'
precision_by_segment = evaluation.precision_by_segments(
terms, sorted_candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
terms, sorted_candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
cvalue_top = [c for c in sorted_candidates[:int(len(candidates) * 0.2)]]
context_words = make_contextword_weight_dict(
cvalue_top, domain_corpus, ['NC', 'AQ', 'VM'], 5)
#stoplist = log_likelihood_stoplist(5)
candidate_scores = stoplist_filter(candidate_scores, stoplist)
return candidate_scores
if __name__ == '__main__':
terms = load_terms()
domain_sents = load_analysis()
train_terms, test_corpus, test_terms = \
split_train_test(domain_sents, terms)
candidates = main(train_terms, test_corpus)
candidates = [word for word, score in candidates]
print '[C]', len(candidates)
print '[T]', len(set(candidates).intersection(set(test_terms)))
print '======'
precision, recall = evaluation.precision_recall(test_terms, candidates)
print '[P]', round(precision, 3)
print '[R]', round(recall, 3)
print '======'
precision_by_segment = evaluation.precision_by_segments(
test_terms, candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i + 1, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
test_terms, candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
def main(pattern, min_freq, loglike_threshold, min_cvalue, use_ncval=False,
cval_top=0.2):
# STEP 1.
# POS-tagged corpus.
domain = load_domain()
# STEP 2.
# Extract matching patterns above frequency threshold.
phrase_freq = chunk_sents(domain, pattern, min_freq)
# Remove POS tags from candidates.
phrase_freq = remove_dict_postags(phrase_freq)
# Remove candidates with words in stoplist.
stoplist = loglike_stoplist(loglike_threshold)
accepted_phrases, discarded_phrases = filter_out(phrase_freq, stoplist)
# Order candidates first by number of words, then by frequency.
sorted_phrases = build_sorted_phrases(accepted_phrases)
# STEP 3.
# Calculate C-value, discard if C-value below threshold.
cvalue_output = calc_cvalue(sorted_phrases, min_cvalue)
cvalue_candidates = [c[0] for c in cvalue_output]
known_terms = load_terms()
if use_ncval is True:
cvalue_top = [c for c in
cvalue_candidates[0:int(len(cvalue_candidates)
* cval_top)]]
context_word_weights = make_contextword_weight_dict(
cvalue_top, domain, ['NC', 'AQ', 'VM'], 5)
ncvalue_output = calc_ncvalue(
cvalue_output, domain, context_word_weights, ['NC', 'AQ', 'VM'], 5)
ncvalue_candidates = [c[0] for c in ncvalue_output]
precision, recall = \
evaluation.precision_recall(known_terms, ncvalue_candidates)
print '\nNC-VALUE'
print '=========='
print 'PRECISION:', round(precision, 3)
print 'RECALL:', round(recall, 3)
print '=========='
precision_by_segment = evaluation.precision_by_segments(
known_terms, ncvalue_candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
known_terms, cvalue_candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
results = ncvalue_candidates
else:
precision, recall = \
evaluation.precision_recall(known_terms, cvalue_candidates)
print '\nC-VALUE'
print '=========='
print '[P]', round(precision, 3)
print '[R]', round(recall, 3)
print '=========='
precision_by_segment = evaluation.precision_by_segments(
known_terms, cvalue_candidates, 4)
for i, seg_precision in enumerate(precision_by_segment):
print '[%s] %s' % (i, round(seg_precision, 3))
recall_list, precision_list = evaluation.precision_at_recall_values(
known_terms, cvalue_candidates)
evaluation.plot_precision_at_recall_values(recall_list, precision_list)
results = cvalue_candidates
return results
