def get_year_counts_for_phrase(corpus, phrase):
phrase = phrase.lower()
phrase = text.rewrite(phrase)
tokens = text.tokenize(phrase)
query = ' '.join(tokens)
regex = '%s\t%s\t([0-9]+)\t([0-9]+)\t(.*)' % (query, corpus)
regex = re.compile(regex)
ngram_path = os.path.join(FLAGS.ngram_dir, 'ngrams_yearly.txt')
counts = {}
with open(ngram_path, 'rb') as ngrams:
for line in ngrams:
match = regex.match(line)
if match:
year = int(match.group(1))
count = int(match.group(2))
counts[year] = count
return counts
def get_year_counts_for_phrases(corpus, phrases):
# Counts is a map from [phrase][year] -> (count, postids)
counts = {}
tokenized_to_phrases = {}
for phrase in phrases:
cooked_phrase = phrase.lower()
cooked_phrase = text.rewrite(cooked_phrase)
tokens = text.tokenize(cooked_phrase)
token_str = " ".join(tokens)
tokenized_to_phrases[token_str] = phrase
for phrase in phrases:
counts[phrase] = {}
query = NGramCount.all()
query.filter("site =", corpus)
query.filter("ngram IN", tokenized_to_phrases.keys())
for result in query.run(batch_size=10000):
total = get_ngram_total_for_year(len(result.ngram.split()), corpus, result.year)
counts[tokenized_to_phrases[result.ngram]][result.year] = (float(result.count) / total, result.postids)
return counts
def test_rewrite(self):
self.assertEqual(text.rewrite("isn't it"), 'is not it')
self.assertEqual(text.rewrite("isn't it"), 'is not it')
self.assertEqual(text.rewrite("john's"), 'john')
self.assertEqual(text.rewrite("'s's's's"), '')