import solution import random import numpy as np

iterations = 50 num_of_topics = 20 alpha = 0.1 gamma = 0.1 random.seed(42) np.random.seed(42)

train_docs, dictionary, train_newsgroups = solution.load_and_preprocess('train') num_of_docs = len(train_docs) num_of_words = len(dictionary)

lda_result = solution.lda(docs=train_docs, num_of_topics=num_of_topics, num_of_words=num_of_words, iterations=iterations, alpha=alpha, gamma=gamma)

topics, saved_topics_distribution, entropies, doc_topics_count, word_topics_count, topics_count = lda_result

solution.plot_distribution_over_topics(saved_topics_distribution, num_of_topics)

solution.plot_entropies(entropies)

solution.plot_word_histogram(selected_topics=[1, 5, 15], word_topics_count=word_topics_count, n=20, dictionary=dictionary)

test_docs, _, test_newsgroups = solution.load_and_preprocess('test', dictionary=dictionary)

lda_new_data_results = solution.lda_new_data(docs=test_docs, num_of_topics=num_of_topics, num_of_words=num_of_words, word_topics_count=word_topics_count, topics_count=topics_count, iterations=iterations, alpha=alpha, gamma=gamma)

_, lda_perplexity, simple_perplexity = lda_new_data_results

iterations = 20 num_of_topics = 10 alpha = 0.01 gamma = 0.01 random.seed(42) np.random.seed(42)

lda_result_2 = solution.lda(docs=train_docs, num_of_topics=num_of_topics, num_of_words=num_of_words, iterations=iterations, alpha=alpha, gamma=gamma) topics_2, saved_topics_distribution_2, entropies_2, doc_topics_count_2, word_topics_count_2, topics_count_2 = lda_result_2

solution.plot_distribution_over_topics(saved_topics_distribution_2, num_of_topics, name='topics_distribution_2.png')

solution.plot_entropies(entropies_2, name='entropies_2.png')

solution.plot_word_histogram(selected_topics=[1, 5, 9], word_topics_count=word_topics_count_2, n=20, dictionary=dictionary, name='word_histogram_2.png')

lda_new_data_results_2 = solution.lda_new_data(docs=test_docs, num_of_topics=num_of_topics, num_of_words=num_of_words, word_topics_count=word_topics_count_2, topics_count=topics_count_2, iterations=iterations, alpha=alpha, gamma=gamma) _, lda_perplexity_2, simple_perplexity_2 = lda_new_data_results_2