<jupyter_start><jupyter_text>Topic extraction with Non-negative Matrix Factorization and Latent Dirichlet Allocation Acknowledging the Author of the original call<jupyter_code># Author: <NAME> <<EMAIL>>
#         <NAME>
#         <NAME> <<EMAIL>>
# License: BSD 3 clause<jupyter_output><empty_output><jupyter_text>Importing from a python library: Time<jupyter_code>from time import time<jupyter_output><empty_output><jupyter_text>Importing packages from SkLearn<jupyter_code>from sklearn.feature_extraction.text import TfidfVectorizer, CountVectorizer
from sklearn.decomposition import NMF, LatentDirichletAllocation
from sklearn.datasets import fetch_20newsgroups<jupyter_output><empty_output><jupyter_text>Defining variables<jupyter_code>n_samples = 2000
n_features = 1000
n_components = 10
n_top_words = 20
print(n_samples)<jupyter_output>2000<jupyter_text>Creating the function using def<jupyter_code>def print_top_words(model, feature_names, n_top_words):
    for topic_idx, topic in enumerate(model.components_):
        message = "Topic #%d: " % topic_idx
        message += " ".join([feature_names[i]
                             for i in topic.argsort()[:-n_top_words - 1:-1]])
        print(message)
    print()<jupyter_output><empty_output><jupyter_text>Adding the body of the code that will serve the purpose<jupyter_code># Load the 20 newsgroups dataset and vectorize it. We use a few heuristics
# to filter out useless terms early on: the posts are stripped of headers,
# footers and quoted replies, and common English words, words occurring in
# only one document or in at least 95% of the documents are removed.

print("Loading dataset...")
t0 = time()
data, _ = fetch_20newsgroups(shuffle=True, random_state=1,
                             remove=('headers', 'footers', 'quotes'), 
                             return_X_y=True)
data_samples = data[:n_samples]
print("done in %0.3fs." % (time() - t0))
print("Extracting tf-idf features for NMF...")
tfidf_vectorizer = TfidfVectorizer(max_df=0.95, min_df=2,
                                   max_features=n_features,
                                   stop_words='english')
t0 = time()
tfidf = tfidf_vectorizer.fit_transform(data_samples)
print("done in %0.3fs." % (time() - t0))
# Fit the NMF model
print("Fitting the NMF model (Frobenius norm) with tf-idf features, "
      "n_samples=%d and n_features=%d..."
      % (n_samples, n_features))
t0 = time()
nmf = NMF(n_components=n_components, random_state=1,
          alpha=.1, l1_ratio=.5).fit(tfidf)
print("done in %0.3fs." % (time() - t0))

print("\nTopics in NMF model (Frobenius norm):")
tfidf_feature_names = tfidf_vectorizer.get_feature_names()
print_top_words(nmf, tfidf_feature_names, n_top_words)
# Fit the NMF model
print("Fitting the NMF model (generalized Kullback-Leibler divergence) with "
      "tf-idf features, n_samples=%d and n_features=%d..."
      % (n_samples, n_features))
t0 = time()
nmf = NMF(n_components=n_components, random_state=1,
          beta_loss='kullback-leibler', solver='mu', max_iter=1000, alpha=.1,
          l1_ratio=.5).fit(tfidf)
print("done in %0.3fs." % (time() - t0))
print("\nTopics in NMF model (generalized Kullback-Leibler divergence):")
tfidf_feature_names = tfidf_vectorizer.get_feature_names()
print_top_words(nmf, tfidf_feature_names, n_top_words)

print("Fitting LDA models with tf features, "
      "n_samples=%d and n_features=%d..."
      % (n_samples, n_features))
lda = LatentDirichletAllocation(n_components=n_components, max_iter=5,
                                learning_method='online',
                                learning_offset=50.,
                                random_state=0)
t0 = time()
lda.fit(tf)
print("done in %0.3fs." % (time() - t0))<jupyter_output><empty_output><jupyter_text>Ending Code block<jupyter_code>print("\nTopics in LDA model:")
tf_feature_names = tf_vectorizer.get_feature_names()
print_top_words(lda, tf_feature_names, n_top_words)<jupyter_output><empty_output><jupyter_text>Homework 2 Starts here ---- In Class code block done below<jupyter_code>wordlist = data_samples[10].split()
wordFreq = []
for w in wordlist:
  wordFreq.append(wordlist.count(w))
str(list(zip(wordlist, wordFreq)))

'[(\'Archive-name:\', 1), (\'graphics/resources-list/part1\', 1), (\'Last-modified:\', 1), (\'1993/04/17\', 1), (\'Computer\', 8), (\'Graphics\', 21), (\'Resource\', 9), (\'Listing\', 11), (\':\', 27), (\'WEEKLY\', 1), (\'POSTING\', 1), (\'[\', 13), (\'PART\', 1), (\'1/3\', 1), (\']\', 11), (\'===================================================\', 1), (\'Last\', 1), (\'Change\', 1), (\':\', 27), (\'17\', 1), (\'April\', 1), (\'1993\', 2), (\'Many\', 5), (\'FAQs,\', 2), (\'including\', 8), (\'this\', 23), (\'Listing,\', 1), (\'are\', 34), (\'available\', 13), (\'on\', 47), (\'the\', 195), (\'archive\', 8), (\'site\', 11), (\'pit-manager.mit.edu\', 3), (\'(alias\', 2), (\'rtfm.mit.edu)\', 2), (\'[192.168.3.11]\', 2), (\'in\', 95), (\'the\', 195), (\'directory\', 8), (\'pub/usenet/news.answers.\', 2), (\'The\', 39), (\'name\', 4), (\'under\', 9), (\'which\', 13), (\'a\', 122), (\'FAQ\', 8), (\'is\', 72), (\'archived\', 5), (\'appears\', 2), (\'in\', 95), (\'the\', 195), (\'Archive-name\', 2), (\'line\', 9), (\'at\', 20), (\'the\', 195), (\'top\', 3), (\'of\', 85), (\'the\', 195), (\'article.\', 2), (\'This\', 11), (\'FAQ\', 8), (\'is\', 72), (\'archived\', 5), (\'as\', 18), (\'graphics/resources-list/part[1-3]\', 2), ("There\'s", 7), (\'a\', 122), (\'mail\', 31), (\'server\', 15), (\'on\', 47), (\'that\', 22), (\'machine.\', 2), (\'You\', 14), (\'send\', 36), (\'a\', 122), (\'e-mail\', 6), (\'message\', 18), (\'to\', 143), (\'<EMAIL>.<EMAIL>\', 3), (\'containing\', 5), (\'the\', 195), (\'keyword\', 1), (\'"help"\', 3), (\'(without\', 2), (\'quotes!)\', 2), (\'in\', 95), (\'the\', 195), (\'message\', 18), (\'body.\', 1), (\'You\', 14), (\'can\', 25), (\'see\', 4), (\'in\', 95), (\'many\', 14), (\'other\', 15), (\'places\', 5), (\'for\', 114), (\'this\', 23), (\'Listing.\', 1), (\'See\', 1), (\'the\', 195), (\'item:\', 1), (\'0.\', 4), (\'Places\', 4), (\'to\', 143), (\'find\', 6), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11), (\'for\', 114), (\'more\', 13), (\'information.\', 2), (\'Items\', 1), (\'Changed:\', 1), (\'--------------\', 3), (\'RE-ARRANGED\', 1), (\'the\', 195), (\'subjects,\', 1), (\'in\', 95), (\'order\', 4), (\'to\', 143), (\'fir\', 1), (\'better\', 1), (\'in\', 95), (\'the\', 195), (\'63K/article\', 1), (\'limit.\', 1), (\'I\', 10), (\'PLAN\', 1), (\'ON\', 1), (\'CHANGING\', 1), (\'HEADERS\', 1), (\'SOON,\', 1), (\'SO\', 1), (\'BE\', 1), (\'CAREFUL!\', 1), (\'ONLY\', 1), (\'THE\', 1), (\'"Resource\', 1), (\'Listing"\', 1), (\'keys\', 1), (\'are\', 34), (\'sure\', 1), (\'to\', 143), (\'remain\', 1), (\'in\', 95), (\'the\', 195), (\'Subject:\', 3), (\'line!\', 1), (\'0.\', 4), (\'Places\', 4), (\'to\', 143), (\'find\', 6), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11), (\'6.\', 3), (\'3D\', 36), (\'graphics\', 20), (\'editors\', 3), (\'a.\', 6), (\'Public\', 3), (\'domain,\', 3), (\'free\', 8), (\'and\', 175), (\'shareware\', 7), (\'systems\', 7), (\'9.\', 2), (\'Plotting\', 2), (\'packages\', 2), (\'18.\', 2), (\'Molecular\', 2), (\'visualization\', 6), (\'stuff\', 12), (\'[\', 13), ("I\'m", 1), (\'thinking\', 1), (\'of\', 85), (\'making\', 1), (\'this\', 23), (\'post\', 3), (\'bi-weekly.\', 1), (\'What\', 1), (\'do\', 3), (\'you\', 28), (\'think???\', 1), (\']\', 11), (\'--------------\', 3), (\'Lines\', 1), (\'which\', 13), (\'got\', 3), (\'changed,\', 1), (\'have\', 12), (\'the\', 195), ("`#\'", 1), (\'character\', 1), (\'in\', 95), (\'front\', 2), (\'of\', 85), (\'them.\', 2), (\'Added\', 1), (\'lines\', 2), (\'are\', 34), (\'prepended\', 1), (\'with\', 42), (\'a\', 122), ("`+\'", 1), (\'Removed\', 1), (\'lines\', 2), (\'are\', 34), (\'just\', 2), (\'removed.\', 1), (\'Use\', 2), ("\'diff\'", 1), (\'to\', 143), (\'locate\', 3), (\'these\', 5), (\'changes.\', 1), (\'========================================================================\', 4), (\'This\', 11), (\'text\', 2), (\'is\', 72), (\'(C)Copyright\', 1), (\'1992,\', 1), (\'1993\', 2), (\'of\', 85), (\'Nikolaos\', 3), (\'C.\', 4), (\'Fotis.\', 1), (\'You\', 14), (\'can\', 25), (\'copy\', 3), (\'freely\', 2), (\'this\', 23), (\'file,\', 1), (\'provided\', 2), (\'you\', 28), (\'keep\', 1), (\'this\', 23), (\'copyright\', 1), (\'notice\', 1), (\'intact.\', 1), (\'Compiled\', 1), (\'by\', 27), (\'Nikolaos\', 3), (\'(Nick)\', 1), (\'C.\', 4), (\'Fotis,\', 2), (\'e-mail:\', 4), (\'<EMAIL>\', 2), (\'Please\', 3), (\'contact\', 6), (\'me\', 5), (\'for\', 114), (\'updates,corrections,\', 1), (\'etc.\', 15), (\'Disclaimer:\', 1), (\'I\', 10), (\'do\', 3), (\'not\', 10), (\'guarantee\', 1), (\'the\', 195), (\'accuracy\', 1), (\'of\', 85), (\'this\', 23), (\'document.\', 1), (\'Use\', 2), (\'it\', 13), (\'at\', 20), (\'your\', 11), (\'own\', 3), (\'risk.\', 1), (\'========================================================================\', 4), (\'This\', 11), (\'is\', 72), (\'mainly\', 1), (\'a\', 122), (\'guide\', 2), (\'for\', 114), (\'computer\', 4), (\'graphics\', 20), (\'software.\', 2), (\'I\', 10), (\'would\', 3), (\'suggest\', 1), (\'reading\', 2), (\'the\', 195), (\'Comp.\', 2), (\'Graphics\', 21), (\'FAQ\', 8), (\'for\', 114), (\'image\', 17), (\'analysis\', 3), (\'stuff.\', 7), ("It\'s", 16), (\'entitled:\', 1), (\'(date)\', 1), (\'comp.graphics\', 4), (\'Frequently\', 1), (\'Asked\', 1), (\'Questions\', 1), (\'(FAQ)\', 1), (\'John\', 1), (\'T.\', 1), (\'Grieggs\', 1), (\'<<EMAIL>>\', 1), (\'is\', 72), (\'the\', 195), (\'poster\', 1), (\'of\', 85), (\'the\', 195), (\'official\', 2), (\'comp.graphics\', 4), (\'FAQ\', 8), (\'I\', 10), (\'have\', 12), (\'included\', 5), (\'my\', 3), (\'comments\', 1), (\'within\', 1), (\'braces\', 1), ("\'[\'", 1), (\'and\', 175), ("\']\'.", 1), (\'Nikolaos\', 3), (\'Fotis\', 1), (\'========================================================================\', 4), (\'Contents\', 1), (\'of\', 85), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11), (\'================================\', 1), (\'PART1:\', 1), (\'------\', 7), (\'0.\', 4), (\'Places\', 4), (\'to\', 143), (\'find\', 6), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11), (\'1.\', 3), (\'ARCHIE\', 2), (\'2.\', 3), (\'Notes\', 2), (\'3.\', 3), (\'Computer\', 8), (\'graphics\', 20), (\'FTP\', 13), (\'site\', 11), (\'list,\', 2), (\'by\', 27), (\'Eric\', 5), (\'Haines\', 4), (\'4.\', 3), (\'Mail\', 3), (\'servers\', 5), (\'and\', 175), (\'graphics-oriented\', 2), (\'BBSes\', 5), (\'5.\', 2), (\'Ray-tracing/graphics-related\', 2), (\'mailing\', 4), (\'lists.\', 1), (\'6.\', 3), (\'3D\', 36), (\'graphics\', 20), (\'editors\', 3), (\'a.\', 6), (\'Public\', 3), (\'domain,\', 3), (\'free\', 8), (\'and\', 175), (\'shareware\', 7), (\'systems\', 7), (\'b.\', 5), (\'Commercial\', 2), (\'systems\', 7), (\'7.\', 2), (\'Scene\', 3), (\'description\', 4), (\'languages\', 2), (\'8.\', 2), (\'Solids\', 2), (\'description\', 4), (\'formats\', 7), (\'PART2:\', 1), (\'------\', 7), (\'9.\', 2), (\'Plotting\', 2), (\'packages\', 2), (\'10.\', 1), (\'Image\', 8), (\'analysis\', 3), (\'software\', 6), (\'-\', 197), (\'Image\', 8), (\'processing\', 2), (\'and\', 175), (\'display\', 3), (\'PART3:\', 1), (\'------\', 7), (\'11.\', 1), (\'Scene\', 3), (\'generators/geographical\', 1), (\'data/Maps/Data\', 1), (\'files\', 14), (\'12.\', 1), (\'3D\', 36), (\'scanners\', 1), (\'-\', 197), (\'Digitized\', 1), (\'3D\', 36), (\'Data.\', 1), (\'13.\', 1), (\'Background\', 1), (\'imagery/textures/datafiles\', 1), (\'14.\', 1), (\'Introduction\', 1), (\'to\', 143), (\'rendering\', 3), (\'algorithms\', 1), (\'a.\', 6), (\'Ray\', 3), (\'tracing\', 5), (\'b.\', 5), (\'Z-buffer\', 1), (\'(depth-buffer)\', 1), (\'c.\', 2), (\'Others\', 1), (\'15.\', 1), (\'Where\', 1), (\'can\', 25), (\'I\', 10), (\'find\', 6), (\'the\', 195), (\'geometric\', 2), (\'data\', 13), (\'for\', 114), (\'the:\', 1), (\'a.\', 6), (\'Teapot\', 1), (\'?\', 2), (\'b.\', 5), (\'Space\', 4), (\'Shuttle\', 1), (\'?\', 2), (\'16.\', 1), (\'Image\', 8), (\'annotation\', 1), (\'software\', 6), (\'17.\', 1), (\'Scientific\', 1), (\'visualization\', 6), (\'stuff\', 12), (\'18.\', 2), (\'Molecular\', 2), (\'visualization\', 6), (\'stuff\', 12), (\'19.\', 1), (\'GIS\', 2), (\'(Geographical\', 1), (\'Information\', 1), (\'Systems\', 2), (\'software)\', 1), (\'Future\', 1), (\'additions:\', 1), (\'[Please\', 1), (\'send\', 36), (\'me\', 5), (\'updates/info!]\', 1), (\'========================================================================\', 4), (\'0.\', 4), (\'Places\', 4), (\'to\', 143), (\'find\', 6), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11), (\'======================================\', 1), (\'#This\', 1), (\'file\', 21), (\'is\', 72), (\'crossposted\', 1), (\'to\', 143), (\'comp.graphics,\', 2), (\'comp.answers\', 1), (\'and\', 175), (\'news.answers,\', 1), (\'so\', 6), (\'if\', 4), (\'you\', 28), ("can\'t", 3), (\'locate\', 3), (\'it\', 13), (\'in\', 95), (\'comp.graphics,\', 2), ("you\'re", 1), (\'advised\', 1), (\'to\', 143), (\'search\', 3), (\'in\', 95), (\'#comp.answers\', 1), (\'or\', 45), (\'news.answers\', 1), (\'(The\', 1), (\'latter\', 1), (\'groups\', 2), (\'usually\', 1), (\'are\', 34), (\'archived\', 5), (\'in\', 95), (\'your\', 11), (\'site.\', 2), (\'Contact\', 5), (\'your\', 11), (\'sysadmin\', 1), (\'for\', 114), (\'more\', 13), (\'info).\', 1), (\'These\', 4), (\'3\', 2), (\'articles\', 4), (\'are\', 34), (\'posted\', 1), (\'to\', 143), (\'comp.graphics\', 4), (\'3-4\', 1), (\'times\', 1), (\'a\', 122), (\'month\', 1), (\'and\', 175), (\'are\', 34), (\'kept\', 1), (\'in\', 95), (\'many\', 14), (\'places\', 5), (\'(see\', 5), (\'below)\', 2), (\'--\', 25), (\'Many\', 5), (\'FAQs,\', 2), (\'including\', 8), (\'this\', 23), (\'one,\', 1), (\'are\', 34), (\'available\', 13), (\'on\', 47), (\'the\', 195), (\'archive\', 8), (\'site\', 11), (\'pit-manager.mit.edu\', 3), (\'(alias\', 2), (\'rtfm.mit.edu)\', 2), (\'[18.172.1.27]\', 2), (\'in\', 95), (\'the\', 195), (\'directory\', 8), (\'pub/usenet/news.answers.\', 2), (\'The\', 39), (\'name\', 4), (\'under\', 9), (\'which\', 13), (\'a\', 122), (\'FAQ\', 8), (\'is\', 72), (\'archived\', 5), (\'appears\', 2), (\'in\', 95), (\'the\', 195), (\'Archive-name\', 2), (\'line\', 9), (\'at\', 20), (\'the\', 195), (\'top\', 3), (\'of\', 85), (\'the\', 195), (\'article.\', 2), (\'This\', 11), (\'FAQ\', 8), (\'is\', 72), (\'archived\', 5), (\'as\', 18), (\'graphics/resources-list/part[1-3]\', 2), ("There\'s", 7), (\'a\', 122), (\'mail\', 31), (\'server\', 15), (\'on\', 47), (\'that\', 22), (\'machine.\', 2), (\'You\', 14), (\'send\', 36), (\'a\', 122), (\'e-mail\', 6), (\'message\', 18), (\'to\', 143), (\'<EMAIL>-<EMAIL>\', 3), (\'containing:\', 2), (\'help\', 6), (\'in\', 95), (\'the\', 195), (\'Subject:\', 3), (\'field\', 1), (\'--\', 25), (\'The\', 39), (\'inria-graphlib\', 3), (\'mail\', 31), (\'server\', 15), (\'mirrors\', 1), (\'this\', 23), (\'posting\', 1), (\'(see\', 5), (\'under\', 9), (\'the\', 195), (\'Subject\', 1), (\'4:\', 1), (\'Mail\', 3), (\'servers\', 5), (\')\', 3), (\'--\', 25), (\'The\', 39), (\'Resource\', 9), (\'Listing\', 11), (\'is\', 72), (\'accesible\', 1), (\'through\', 2), (\'WAIS\', 1), (\'in\', 95), (\'the\', 195), (\'machine\', 2), (\'enuxva.eas.asu.edu\', 1), (\'(port\', 1), (\'8000)\', 1), (\'under\', 9), (\'the\', 195), (\'name\', 4), (\'graphics-resources-list.\', 1), ("It\'s", 16), (\'got\', 3), (\'a\', 122), (\'digest-type\', 1), (\'line\', 9), (\'before\', 3), (\'every\', 1), (\'numbered\', 1), (\'item\', 1), (\'for\', 114), (\'purposes\', 1), (\'of\', 85), (\'indexing.\', 1), (\'--\', 25), (\'Another\', 2), (\'place\', 3), (\'that\', 22), (\'monitors\', 1), (\'the\', 195), (\'Listing\', 11), (\'is\', 72), (\'the\', 195), (\'MaasInfo\', 1), (\'files.\', 11), (\'For\', 13), (\'more\', 13), (\'info\', 2), (\'contact\', 6), (\'Robert\', 2), (\'E.\', 2), (\'Maas\', 1), (\'<<EMAIL>>\', 1), (\'--\', 25), (\'Yet\', 1), (\'another\', 4), (\'place\', 3), (\'to\', 143), (\'search\', 3), (\'for\', 114), (\'FAQs\', 1), (\'in\', 95), (\'general\', 1), (\'is\', 72), (\'the\', 195), (\'SWITCH\', 1), (\'(Swiss\', 1), (\'Academic\', 1), (\'and\', 175), (\'Research\', 1), (\'Network)\', 1), (\'system\', 10), (\'in\', 95), (\'Switzerland:\', 1), (\'interactive:\', 1), (\'telnet\', 6), (\'nic.switch.ch\', 2), (\'[172.16.17.32],\', 1), (\'login\', 2), (\'as\', 18), (\'"info".\', 1), (\'Move\', 2), (\'to\', 143), (\'the\', 195), (\'info_service/Usenet/periodic-postings\', 2), (\'directory.\', 2), (\'Search\', 1), (\'in\', 95), (\'the\', 195), (\'00index\', 1), (\'file\', 21), (\'by\', 27), (\'typing\', 1), (\'"/"\', 1), (\'and\', 175), (\'the\', 195), (\'word\', 3), (\'to\', 143), (\'look\', 2), (\'for.\', 1), (\'You\', 14), (\'may\', 5), (\'then\', 2), (\'just\', 2), (\'read\', 1), (\'the\', 195), (\'FAQ\', 8), (\'in\', 95), (\'the\', 195), (\'"faqs"\', 1), (\'directory,\', 1), (\'or\', 45), (\'decide\', 1), (\'to\', 143), (\'fetch\', 1), (\'it\', 13), (\'by\', 27), (\'one\', 3), (\'of\', 85), (\'the\', 195), (\'following\', 6), 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(\'in\', 95), (\'Mech.\', 1), (\'Eng.\', 1), (\'Depts.\', 1), (\'Now\', 4), ("it\'s", 2), (\'superseded\', 1), (\'from\', 44), (\'CQUEL.BYU\', 2), (\'(pronounced\', 1), (\'"sequel").\', 1), ("That\'s", 1), (\'a\', 122), (\'complete\', 2), (\'modelling,\', 1), (\'animation\', 7), (\'and\', 175), (\'visualization\', 6), (\'package.\', 4), (\'Runs\', 3), (\'in\', 95), (\'the\', 195), (\'usual\', 1), (\'workstation\', 1), (\'environments\', 2), (\'(SUN,\', 1), (\'DEC,\', 1), (\'HP,\', 1), (\'SGI,\', 2), (\'IBM\', 2), (\'RS6000,\', 1), (\'and\', 175), (\'others)\', 1), (\'You\', 14), (\'can\', 25), (\'get\', 17), (\'a\', 122), (\'demo\', 2), (\'version\', 8), (\'(30-days\', 1), (\'trial\', 2), (\'period)\', 1), (\'either\', 2), (\'by\', 27), (\'sending\', 4), (\'$20\', 1), (\'USD\', 1), (\'in\', 95), (\'their\', 4), (\'address\', 9), (\'or\', 45), (\'a\', 122), (\'blank\', 1), (\'tape.\', 1), (\'It\', 11), (\'costs\', 3), (\'1,500\', 1), (\'for\', 114), (\'a\', 122), (\'full\', 4), (\'run-time\', 1), (\'licence.\', 1), (\'Contact:\', 4), (\'Engineering\', 3), (\'Computer\', 8), (\'Graphics\', 21), (\'Lab\', 1), (\'368\', 1), (\'Clyde\', 1), (\'Building,\', 1), (\'Brigham\', 1), (\'Young\', 1), (\'Univ.\', 1), (\'Provo,\', 1), (\'UT\', 2), (\'84602\', 1), (\'Phone:\', 5), (\'801-378-2812\', 1), (\'E-mail:\', 1), (\'<EMAIL>\', 1), (\'twixt\', 1), (\'-----\', 3), (\'Soon\', 2), (\'to\', 143), (\'add\', 1), (\'stuff\', 12), (\'about\', 7), (\'it...\', 1), (\'If\', 5), (\'I\', 10), (\'get\', 17), (\'a\', 122), (\'reply\', 1), (\'to\', 143), (\'my\', 3), (\'FAX\', 3), (\'VOXBLAST\', 1), (\'--------\', 5), ("It\'s", 16), (\'a\', 122), (\'volume\', 5), (\'renderer\', 4), (\'marketed\', 1), (\'by:\', 1), (\'Vaytek\', 2), (\'Inc.\', 4), (\'(Fairfield,\', 1), (\'Iowa\', 1), (\'phone:\', 1), (\'515-472-2227)\', 1), (\',\', 4), (\'running\', 3), (\'on\', 47), (\'PCs\', 2), (\'with\', 42), (\'386+FPU\', 1), (\'at\', 20), (\'least.\', 1), (\'Call\', 2), (\'Vaytek\', 2), 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(\'gondwana.\', 1), (\'TDDD\', 3), (\'----\', 4), ("It\'s", 16), (\'a\', 122), (\'library\', 6), (\'of\', 85), (\'3D\', 36), (\'objects\', 17), (\'with\', 42), (\'translators\', 1), (\'to/from\', 3), (\'OFF,\', 5), (\'NFF,\', 7), (\'Rayshade,\', 3), (\'Imagine\', 8), (\'or\', 45), (\'vort\', 2), (\'objects.\', 5), (\'Edited\', 1), (\'copy\', 3), (\'of\', 85), (\'the\', 195), (\'announcement\', 1), (\'follows\', 1), (\'(from\', 2), (\'Raytracing\', 1), (\'News,\', 2), (\'V4,#3):\', 1), (\'New\', 4), (\'Library\', 1), (\'of\', 85), (\'3D\', 36), (\'Objects\', 1), (\'Available\', 4), (\'via\', 7), (\'FTP,\', 3), (\'by\', 27), (\'Steve\', 8), (\'Worley\', 2), (\'(<EMAIL>)\', 1), (\'I\', 10), (\'have\', 12), (\'assembled\', 1), (\'a\', 122), (\'set\', 6), (\'of\', 85), (\'over\', 3), (\'150\', 1), (\'3D\', 36), (\'objects\', 17), (\'in\', 95), (\'a\', 122), (\'binary\', 2), (\'format\', 12), (\'called\', 5), (\'TDDD.\', 1), (\'These\', 4), (\'objects\', 17), (\'range\', 2), (\'from\', 44), (\'human\', 1), (\'figures\', 1), (\'to\', 143), (\'airplanes,\', 1), (\'from\', 44), (\'semi-trucks\', 1), (\'to\', 143), (\'lampposts.\', 1), (\'These\', 4), (\'objects\', 17), (\'are\', 34), (\'all\', 4), (\'freely\', 2), (\'distributable,\', 1), (\'and\', 175), (\'most\', 4), (\'have\', 12), (\'READMEs\', 1), (\'that\', 22), (\'describe\', 1), (\'them.\', 2), (\'In\', 3), (\'order\', 4), (\'to\', 143), (\'convert\', 4), (\'these\', 5), (\'objects\', 17), (\'to\', 143), (\'a\', 122), (\'human-readable\', 1), (\'format,\', 4), (\'a\', 122), (\'file\', 21), (\'with\', 42), (\'the\', 195), (\'specification\', 1), (\'of\', 85), (\'TDDD\', 3), (\'is\', 72), (\'included\', 5), (\'in\', 95), (\'the\', 195), (\'directory\', 8), (\'with\', 42), (\'the\', 195), (\'objects.\', 5), (\'There\', 9), (\'is\', 72), (\'also\', 24), (\'a\', 122), (\'shareware\', 7), (\'system\', 10), (\'called\', 5), (\'TTDDDLIB\', 3), (\'(officially\', 1), (\'on\', 47), (\'hubcap.clemson.edu)\', 1), (\'that\', 22), (\'will\', 17), (\'convert\', 4), (\'(ala\', 1), (\'PBM+)\', 1), (\'to/from\', 3), (\'various\', 12), (\'object\', 7), (\'formats\', 7), (\':\', 27), (\'Imagine\', 8), (\'TTDDD\', 4), (\'(extension\', 1), (\'of\', 85), (\'TDDD?),\', 1), (\'OFF,\', 5), (\'NFF,\', 7), (\'Rayshade\', 8), (\'4.0,\', 2), (\'or\', 45), (\'vort.\', 1), (\'Source\', 1), (\'included\', 5), (\'for\', 114), (\'Amiga/Unix\', 1), (\'as\', 18), (\'executables\', 2), (\'for\', 114), (\'the\', 195), (\'Amiga.\', 3), (\'Also\', 6), (\'outputs\', 3), (\'Framemaker\', 2), (\'MIF\', 2), (\'files\', 14), (\'and\', 175), (\'isometric\', 2), (\'views\', 2), (\'in\', 95), (\'Postscript.\', 2), (\'P3D\', 7), (\'---\', 5), (\'From\', 4), (\'Pittsburgh\', 1), (\'Supercomputing\', 2), (\'Center.\', 2), (\'The\', 39), (\'P3D\', 7), (\'uses\', 3), (\'lisp\', 3), (\'with\', 42), (\'slight\', 1), (\'extensions\', 1), (\'to\', 143), (\'store\', 2), (\'three-dimensional\', 1), (\'models.\', 3), (\'A\', 20), (\'simple\', 2), (\'lisp\', 3), (\'interpreter\', 1), (\'is\', 72), (\'included\', 5), (\'with\', 42), (\'the\', 195), (\'P3D\', 7), (\'release,\', 1), (\'so\', 6), (\'there\', 5), (\'is\', 72), (\'no\', 4), (\'need\', 2), (\'to\', 143), (\'have\', 12), (\'access\', 5), (\'to\', 143), (\'any\', 7), ("vendor\'s", 1), (\'lisp\', 3), (\'to\', 143), (\'run\', 3), (\'this\', 23), (\'software.\', 2), (\'The\', 39), (\'mouse-driven\', 1), (\'user\', 3), (\'interfaces\', 1), (\'for\', 114), (\'Motif,\', 1), (\'Open\', 1), (\'Look,\', 1), (\'and\', 175), (\'Silicon\', 3), (\'Graphics\', 21), (\'GL,\', 2), (\'and\', 175), (\'the\', 195), (\'DrawP3D\', 1), (\'subroutine\', 1), (\'library\', 6), (\'for\', 114), (\'generating\', 1), (\'P3D\', 7), (\'without\', 4), (\'ever\', 2), (\'looking\', 2), (\'at\', 20), (\'the\', 195), (\'underlying\', 1), (\'Lisp.\', 1), (\'The\', 39), (\'P3D\', 7), (\'software\', 6), (\'currently\', 1), (\'supports\', 2), (\'nine\', 1), (\'renderers.\', 2), (\'They\', 2), (\'are:\', 1), (\'Painter\', 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(\'standard\', 7), (\'to\', 143), (\'tranfer\', 1), (\'solid\', 6), (\'models\', 4), (\'-\', 197), (\'Brep\', 1), (\'and\', 175), (\'CSG.\', 1), (\'The\', 39), (\'current\', 1), (\'standard\', 7), (\'number\', 6), (\'is\', 72), (\'ANSI\', 1), (\'Y14.26M-1987\', 1), (\'For\', 13), (\'documentation,\', 1), (\'you\', 28), (\'might\', 1), (\'want\', 1), (\'to\', 143), (\'contact\', 6), (\'Nancy\', 1), (\'Flower\', 1), (\'at\', 20), (\'NCGA\', 2), (\'Technical\', 1), (\'Services\', 1), (\'and\', 175), (\'Standards,\', 1), (\'1-800-225-6242\', 1), (\'ext.\', 1), (\'325\', 1), (\'and\', 175), (\'the\', 195), (\'cost\', 3), (\'is\', 72), (\'$100.\', 1), (\'This\', 11), (\'standard\', 7), (\'is\', 72), (\'not\', 10), (\'available\', 13), (\'in\', 95), (\'electronic\', 4), (\'format.\', 6), (\'c.\', 2), (\'PDES/STEP\', 1), (\':\', 27), (\'This\', 11), (\'slowly\', 1), (\'emerging\', 1), (\'standard\', 7), (\'tries\', 2), (\'to\', 143), (\'encompass\', 1), (\'not\', 10), (\'only\', 6), (\'the\', 195), (\'geometrical\', 2), (\'information,\', 2), (\'but\', 10), (\'also\', 24), (\'for\', 114), (\'things\', 4), (\'like\', 10), (\'FEM,\', 1), (\'etc.\', 15), (\'The\', 39), (\'main\', 1), (\'bodies\', 1), (\'besides\', 1), (\'this\', 23), (\'standard\', 7), (\'are\', 34), (\'NIST\', 1), (\'and\', 175), (\'DARPA.\', 1), (\'You\', 14), (\'can\', 25), (\'get\', 17), (\'more\', 13), (\'information\', 7), (\'about\', 7), (\'PDES\', 1), (\'by\', 27), (\'sending\', 4), (\'mail\', 31), (\'to\', 143), (\'<EMAIL>\', 1), (\'and\', 175), (\'putting\', 1), (\'the\', 195), (\'line\', 9), (\'send\', 36), (\'index\', 2), (\'in\', 95), (\'the\', 195), (\'body\', 8), (\'(NOT\', 1), (\'the\', 195), (\'Subject:)\', 1), (\'area\', 1), (\'of\', 85), (\'the\', 195), (\'message.\', 2), (\'The\', 39), (\'people\', 3), (\'at\', 20), (\'Rutherford\', 1), (\'Appleton\', 1), (\'Lab.\', 1), (\'are\', 34), (\'also\', 24), (\'working\', 1), (\'on\', 47), (\'STEP\', 1), (\'tools:\', 1), (\'they\', 5), (\'have\', 12), (\'an\', 24), (\'EXPRESS\', 1), (\'compiler\', 1), (\'and\', 175), (\'an\', 24), (\'Exchange\', 1), (\'file\', 21), (\'parser,\', 1), (\'both\', 1), (\'available\', 13), (\'in\', 95), (\'source\', 3), (\'form\', 1), (\'(and\', 8), (\'for\', 114), (\'free)\', 1), (\'for\', 114), (\'research\', 3), (\'purposes.\', 1), (\'Soon\', 2), (\'they\', 5), (\'will\', 17), (\'also\', 24), (\'have\', 12), (\'an\', 24), (\'EXPRESS-based\', 1), (\'database\', 6), (\'system.\', 4), (\'For\', 13), (\'the\', 195), (\'tools\', 2), (\'contact\', 6), (\'Mike\', 1), (\'Mead,\', 1), (\'Phone:\', 5), (\'+44\', 1), (\'(0235)\', 1), (\'44\', 1), (\'6710\', 1), (\'(FAX:\', 1), (\'x\', 1), (\'5893),\', 1), (\'e-mail:\', 4), (\'<EMAIL>\', 1), (\'or\', 45), (\'{...!}mcsun!uknet!rlinf!mm\', 1), (\'or\', 45), (\'<EMAIL>@NSFnet-relay.ac.uk\', 1), (\'==========================================================================\', 7), (\'End\', 1), (\'of\', 85), (\'Part\', 1), (\'1\', 4), (\'of\', 85), (\'the\', 195), (\'Resource\', 9), (\'Listing\', 11)]'<jupyter_output><empty_output><jupyter_text>Code block number 2 done below<jupyter_code>wordlist = data_samples[10].split()
bigString = ' , '.join(data_samples)
print(bigString)
wordFreq = []
for w in wordlist:
  wordFreq.append(wordlist.count(w))
str(list(zip(wordlist, wordFreq)))<jupyter_output><empty_output><jupyter_text>Defining a new code block that classifies data using cross-validation<jupyter_code>def analyze_model(model=None, folds=10):
''' Run x-validation and return scores, averaged confusion matrix, and df with false positives and negatives '''

X, y, X_test = load()
y = y.values   # to numpy
X = X.values
if not model:
    model = load_model()

# Manual x-validation to accumulate actual
cv_skf = StratifiedKFold(y, n_folds=folds, shuffle=False, random_state=42)
scores = []
conf_mat = np.zeros((2, 2))      # Binary classification
false_pos = Set()
false_neg = Set()

for train_i, val_i in cv_skf:
    X_train, X_val = X[train_i], X[val_i]
    y_train, y_val = y[train_i], y[val_i]

    print "Fitting fold..."
    model.fit(X_train, y_train)

    print "Predicting fold..."
    y_pprobs = model.predict_proba(X_val)       # Predicted probabilities
    y_plabs = np.squeeze(model.predict(X_val))  # Predicted class labels

    scores.append(roc_auc_score(y_val, y_pprobs[:, 1]))
    confusion = confusion_matrix(y_val, y_plabs)
    conf_mat += confusion

    # Collect indices of false positive and negatives
    fp_i = np.where((y_plabs==1) & (y_val==0))[0]
    fn_i = np.where((y_plabs==0) & (y_val==1))[0]
    false_pos.update(val_i[fp_i])
    false_neg.update(val_i[fn_i])

    print "Fold score: ", scores[-1]
    print "Fold CM: \n", confusion

print "\nMean score: %0.2f (+/- %0.2f)" % (np.mean(scores), np.std(scores) * 2)
conf_mat /= folds
print "Mean CM: \n", conf_mat
print "\nMean classification measures: \n"
pprint(class_report(conf_mat))
return scores, conf_mat, {'fp': sorted(false_pos), 'fn': sorted(false_neg)}<jupyter_output><empty_output><jupyter_text>Ordering the data and returning a pandas dataframe filled with the data.<jupyter_code>def top_tfidf_feats(row, features, top_n=25):
    ''' Get top n tfidf values in row and return them with their corresponding feature names.'''
    topn_ids = np.argsort(row)[::-1][:top_n]
    top_feats = [(features[i], row[i]) for i in topn_ids]
    df = pd.DataFrame(top_feats)
    df.columns = ['feature', 'tfidf']
    return df


def top_feats_in_doc(Xtr, features, row_id, top_n=25):
''' Top tfidf features in specific document (matrix row) '''
row = np.squeeze(Xtr[row_id].toarray())
return top_tfidf_feats(row, features, top_n)<jupyter_output><empty_output>
{'fraction_non_alphanumeric': 0.4852348854662251, 'fraction_numerical': 0.09366501194566272, 'mean_word_length': 3.059760733452594, 'pattern_counts': {'":': 0, '<': 254, '<?xml version=': 0, '>': 255, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 126, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 6, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'chain_length': '11', 'dir': 'jupyter-structured-clean-dedup', 'id': '465710', 'license': 'MIT', 'n_tokens_mistral': 77795, 'n_tokens_neox': 64526, 'n_words': 15895, 'path': '.ipynb_checkpoints/Classify Documents using some NLP-checkpoint.ipynb', 'repo_name': 'BhavikR98/IS-465-Assignment', 'size': '146967'}