def testNormalizedLogRatioMeasure(self):
"""Test normalized_log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, normalize=True)[0]
# Answer should be ~ -0.182321557 / -ln(1 / 5) = -0.113282753
expected = -0.113282753
self.assertAlmostEqual(expected, obtained)
mean, std = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, normalize=True, with_std=True)[0]
self.assertAlmostEqual(expected, mean)
self.assertEqual(0.0, std)
def testLogRatioMeasure(self):
"""Test log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator)[0]
# Answer should be ~ ln{(1 / 5) / [(3 / 5) * (2 / 5)]} = -0.182321557
expected = -0.182321557
self.assertAlmostEqual(expected, obtained)
mean, std = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, with_std=True)[0]
self.assertAlmostEqual(expected, mean)
self.assertEqual(0.0, std)
def testLogRatioMeasure(self):
"""Test log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator)[0]
# Answer should be ~ ln{(1 / 5) / [(3 / 5) * (2 / 5)]} = -0.182321557
expected = -0.182321557
self.assertAlmostEqual(expected, obtained)
mean, std = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, with_std=True)[0]
self.assertAlmostEqual(expected, mean)
self.assertEqual(0.0, std)
def testNormalizedLogRatioMeasure(self):
"""Test normalized_log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, normalize=True)[0]
# Answer should be ~ -0.182321557 / -ln(1 / 5) = -0.113282753
expected = -0.113282753
self.assertAlmostEqual(expected, obtained)
mean, std = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.accumulator, normalize=True,
with_std=True)[0]
self.assertAlmostEqual(expected, mean)
self.assertEqual(0.0, std)
def testLogRatioMeasure(self):
"""Test log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation, self.posting_list, self.num_docs)[0]
# Answer should be ~ ln{(1 / 5) / [(3 / 5) * (2 / 5)]} = -0.182321557
expected = -0.182321557
self.assertAlmostEqual(obtained, expected)
def testNormalizedLogRatioMeasure(self):
"""Test normalized_log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(
self.segmentation,
self.posting_list,
self.num_docs,
normalize=True)[0]
# Answer should be ~ -0.182321557 / -ln(1 / 5) = -0.113282753
expected = -0.113282753
self.assertAlmostEqual(obtained, expected)
def pmi(topics, corpus, dictionary=None):
"""
"""
unique_ids = unique_ids = set(chain(*topics))
accumulator = inverted_accumulator(corpus,
unique_ids,
dictionary=dictionary)
segments = segmentation.s_one_pre(topics)
scores = direct_confirmation_measure.log_ratio_measure(
segments, accumulator)
return np.array(scores)
def _pair_npmi(pair, accumulator):
"""Compute normalized pairwise mutual information (**NPMI**) between a pair of words.
Parameters
----------
pair : (int, int)
The pair of words (word_id1, word_id2).
accumulator : :class:`~gensim.topic_coherence.text_analysis.InvertedIndexAccumulator`
Word occurrence accumulator from probability_estimation.
Return
------
float
NPMI between a pair of words.
"""
return log_ratio_measure([[pair]], accumulator, True)[0]
def _pair_npmi(pair, accumulator):
"""Compute normalized pairwise mutual information (**NPMI**) between a pair of words.
Parameters
----------
pair : (int, int)
The pair of words (word_id1, word_id2).
accumulator : :class:`~gensim.topic_coherence.text_analysis.InvertedIndexAccumulator`
Word occurrence accumulator from probability_estimation.
Return
------
float
NPMI between a pair of words.
"""
return log_ratio_measure([[pair]], accumulator, True)[0]
#Make accumulator
accumulator = probability_estimation.p_boolean_document(
corpus, segmented_topics)
#Perform the measurements and print results
lcp = direct_confirmation_measure.log_conditional_probability(
segmented_topics, accumulator)
with codecs.open(outputfile1, encoding='utf-8', mode='w',
errors='ignore') as outputFile:
for item in lcp:
outputFile.write('%s \n' % (item))
pmi = direct_confirmation_measure.log_ratio_measure(
segmented_topics, accumulator)
with codecs.open(outputfile2, encoding='utf-8', mode='w',
errors='ignore') as outputFile:
for item in pmi:
outputFile.write('%s \n' % (item))
cosim = indirect_confirmation_measure.cosine_similarity(
segmented_topics, accumulator, unsegmented_topics, 'nlr', 1)
with codecs.open(outputfile3, encoding='utf-8', mode='w',
errors='ignore') as outputFile:
for item in cosim:
outputFile.write('%s \n' % (item))
npmi = direct_confirmation_measure.log_ratio_measure(segmented_topics,
def _pair_npmi(pair, accumulator):
"""Compute normalized pairwise mutual information (NPMI) between a pair of words.
The pair is an iterable of (word_id1, word_id2).
"""
return direct_confirmation_measure.log_ratio_measure([[pair]], accumulator,
True)[0]
def testNormalizedLogRatioMeasure(self):
"""Test normalized_log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(self.segmentation, self.posting_list, self.num_docs, normalize=True)[0]
# Answer should be ~ -0.182321557 / -ln(1 / 5) = -0.113282753
expected = -0.113282753
self.assertAlmostEqual(obtained, expected)
def testLogRatioMeasure(self):
"""Test log_ratio_measure()"""
obtained = direct_confirmation_measure.log_ratio_measure(self.segmentation, self.posting_list, self.num_docs)[0]
# Answer should be ~ ln{(1 / 5) / [(3 / 5) * (2 / 5)]} = -0.182321557
expected = -0.182321557
self.assertAlmostEqual(obtained, expected)
def _pair_npmi(pair, accumulator):
"""Compute normalized pairwise mutual information (NPMI) between a pair of words.
The pair is an iterable of (word_id1, word_id2).
"""
return direct_confirmation_measure.log_ratio_measure([[pair]], accumulator, True)[0]
