# Estimate the optimal number of topics
viz = Visualization(topic_model)
viz.plot_greene_metric(min_num_topics=10,
max_num_topics=30,
tao=10, step=1,
top_n_words=10)
viz.plot_arun_metric(min_num_topics=5,
max_num_topics=30,
iterations=10)
viz.plot_consensus_metric(min_num_topics=5,
max_num_topics=30,
iterations=10)
# Infer topics
print 'Inferring topics...'
topic_model.infer_topics(num_topics=15)
# Save model on disk
utils.save_topic_model(topic_model, 'output/NMF_15topics.pickle')
# Print results
print '\nTopics:'
topic_model.print_topics(num_words=10)
print '\nTopic distribution for document 0:', \
topic_model.topic_distribution_for_document(0)
print '\nMost likely topic for document 0:', \
topic_model.most_likely_topic_for_document(0)
print '\nFrequency of topics:', \
topic_model.topics_frequency()
print '\nTop 10 most relevant words for topic 2:', \
topic_model.top_words(2, 10)
# Infer topics
topic_model = NonNegativeMatrixFactorization(corpus=corpus)
topic_model.infer_topics(num_topics=num_topics)
topic_model.print_topics(num_words=10)
# Clean the data directory
if os.path.exists('static/data'):
shutil.rmtree('static/data')
os.makedirs('static/data')
# Export topic cloud
utils.save_topic_cloud(topic_model, 'static/data/topic_cloud.json')
# Export details about topics
for topic_id in range(topic_model.nb_topics):
utils.save_word_distribution(topic_model.top_words(topic_id, 20),
'static/data/word_distribution'+str(topic_id)+'.tsv')
utils.save_affiliation_repartition(topic_model.affiliation_repartition(topic_id),
'static/data/affiliation_repartition'+str(topic_id)+'.tsv')
evolution = []
for i in range(2004, 2016):
evolution.append((i, topic_model.topic_frequency(topic_id, date=i)))
utils.save_topic_evolution(evolution, 'static/data/frequency'+str(topic_id)+'.tsv')
# Export details about documents
for doc_id in range(topic_model.corpus.size):
utils.save_topic_distribution(topic_model.topic_distribution_for_document(doc_id),
'static/data/topic_distribution_d'+str(doc_id)+'.tsv')
# Export details about words
for word_id in range(len(topic_model.corpus.vocabulary)):
topic_model = NonNegativeMatrixFactorization(corpus=corpus)
topic_model.infer_topics(num_topics=num_topics)
topic_model.print_topics(num_words=10)
# Clean the data directory
if os.path.exists('static/data'):
shutil.rmtree('static/data')
os.makedirs('static/data')
# Export topic cloud
utils.save_topic_cloud(topic_model, 'static/data/topic_cloud.json')
# Export details about topics
for topic_id in range(topic_model.nb_topics):
utils.save_word_distribution(
topic_model.top_words(topic_id, 20),
'static/data/word_distribution' + str(topic_id) + '.tsv')
utils.save_affiliation_repartition(
topic_model.affiliation_repartition(topic_id),
'static/data/affiliation_repartition' + str(topic_id) + '.tsv')
evolution = []
for i in range(2012, 2016):
evolution.append((i, topic_model.topic_frequency(topic_id, date=i)))
utils.save_topic_evolution(
evolution, 'static/data/frequency' + str(topic_id) + '.tsv')
# Export details about documents
for doc_id in range(topic_model.corpus.size):
utils.save_topic_distribution(
topic_model.topic_distribution_for_document(doc_id),
'static/data/topic_distribution_d' + str(doc_id) + '.tsv')