gensim - Python库用于主题建模,文档索引和相似性检索大全集

gensim - Python库用于主题建模,文档索引和相似性检索大全集。目标受众是自然语言处理(NLP)和信息检索(IR)社区。
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3.5.0

Docs 💬

@menshikh-iv menshikh-iv released this Jul 6, 2018 · 1 commit to develop since this release

Assets

3.5.0, 2018-07-06

This release comprises a glorious 38 pull requests from 28 contributors. Most of the effort went into improving the documentation—hence the release code name "Docs 💬 "!

Apart from the massive overhaul of all Gensim documentation (including docstring style and examples—you asked for it), we also managed to sneak in some new functionality and a number of bug fixes. As usual, see the notes below for a complete list, with links to pull requests for more details.

Huge thanks to all contributors! Nobody loves working on documentation. 3.5.0 is a result of several months of laborious, unglamorous, and sometimes invisible work. Enjoy!

📚 Documentation improvements

🌟 New features:

  • Add add_entity method to KeyedVectors to allow adding word vectors manually (@persiyanov, #1957)
  • Add inference for new unseen author to AuthorTopicModel (@Stamenov, #1766)
  • Add evaluate_word_analogies (will replace accuracy) method to KeyedVectors (@akutuzov, #1935)
  • Add Pivot Normalization to TfidfModel (@markroxor, #1780)

👍 Improvements

🔴 Bug fixes:

  • Fix Doc2Vec.infer_vector + notebook cleanup (@gojomo, #2103)
  • Fix linear decay for learning rate in Doc2Vec.infer_vector (@umangv, #2063)
  • Fix negative sampling floating-point error for `gensim.models.Poincare (@jayantj, #1959)
  • Fix loading word2vec and doc2vec models saved using old Gensim versions (@manneshiva, #2012)
  • Fix SoftCosineSimilarity.get_similarities on corpora ssues/1955) (@Witiko, #1972)
  • Fix return dtype for matutils.unitvec according to input dtype (@o-P-o, #1992)
  • Fix passing empty dictionary to gensim.corpora.WikiCorpus (@steremma, #2042)
  • Fix bug in Similarity.query_shards in multiprocessing case (@bohea, #2044)
  • Fix SMART from TfidfModel for case when df == "n" (@PeteBleackley, #2021)
  • Fix OverflowError when loading a large term-document matrix in compiled MatrixMarket format (@arlenk, #2001)
  • Update rules for removing table markup from Wikipedia dumps (@chaitaliSaini, #1954)
  • Fix _is_single from Phrases for case when corpus is a NumPy array (@rmalouf, #1987)
  • Fix tests for EuclideanKeyedVectors.similarity_matrix (@Witiko, #1984)
  • Fix deprecated parameters in D2VTransformer and W2VTransformer(@MritunjayMohitesh, #1945)
  • Fix Doc2Vec.infer_vector after loading old Doc2Vec (gensim<=3.2)(@manneshiva, #1974)
  • Fix inheritance chain for load_word2vec_format (@DennisChen0307, #1968)
  • Update Keras version (avoid bug from keras==2.1.5) (@menshikh-iv, #1963)

⚠️ Deprecations (will be removed in the next major release)

  • Remove

    • gensim.models.wrappers.fasttext (obsoleted by the new native gensim.models.fasttext implementation)
    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki (all of these obsoleted by the new native gensim.scripts.segment_wiki implementation)
    • "deprecated" functions and attributes

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils
3.4.0

3.4.0

@menshikh-iv menshikh-iv released this Mar 1, 2018 · 1 commit to develop since this release

Assets

3.4.0, 2018-03-01

🌟 New features:

👍 Improvements:

  • New method to show the Gensim installation parameters: python -m gensim.scripts.package_info --info. Use this when reporting problems, for easier debugging. Fix #1902 (@sharanry, #1903)
  • Added a flag to optionally skip network-related tests, to help maintainers avoid network issues with CI services (@menshikh-iv, #1930)
  • Added license field to setup.py, allowing the use of tools like pip-licenses (@nils-werner, #1909)

🔴 Bug fixes:

📚 Tutorial and doc improvements:

⚠️ Deprecations (will be removed in the next major release)

  • Remove

    • gensim.models.wrappers.fasttext (obsoleted by the new native gensim.models.fasttext implementation)
    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki (all of these obsoleted by the new native gensim.scripts.segment_wiki implementation)
    • "deprecated" functions and attributes

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils
3.3.0

3.3.0

@menshikh-iv menshikh-iv released this Feb 2, 2018 · 1 commit to develop since this release

Assets

3.3.0, 2018-01-02

🌟 New features:

  • Re-designed all "*2vec" implementations (@manneshiva, #1777)

  • Improve gensim.scripts.segment_wiki by retaining interwiki links. Fix #1712
    (@steremma, PR #1839)

    • Optionally extract interlinks from Wikipedia pages (use the --include-interlinks option). This will output one additional JSON dict for each article:

      {
    "interlinks": {
        "article title 1": "interlink text 1",
        "article title 2": "interlink text 2",
        ...
    }
}

    • Example: extract the Wikipedia graph with article links as edges, from a raw Wikipedia dump:

      python -m gensim.scripts.segment_wiki --include-interlinks --file ~/Downloads/enwiki-latest-pages-articles.xml.bz2 --output ~/Desktop/enwiki-latest.jsonl.gz
      • Read this field from the segment_wiki output:
      import json
from smart_open import smart_open

with smart_open("enwiki-latest.jsonl.gz") as infile:
    for doc in infile:
        doc = json.loads(doc)

        src_node = doc['title']
        dst_nodes = doc['interlinks'].keys()

        print(u"Source node: {}".format(src_node))
        print(u"Destination nodes: {}".format(u", ".join(dst_nodes)))
        break

"""
OUTPUT:

Source node: Anarchism
Destination nodes: anarcha-feminist, Ivan Illich, Adolf Brand, Josiah Warren, will (philosophy), anarcha-feminism, Anarchism in Mexico, Lysander Spooner, English Civil War, G8, Sebastien Faure, Nihilist movement, Sébastien Faure, Left-wing politics, imamate, Pierre Joseph Proudhon, anarchist communism, Università popolare (Italian newspaper), 1848 Revolution, Synthesis anarchism, labour movement, anarchist communists, collectivist anarchism, polyamory, post-humanism, postcolonialism, anti war movement, State (polity), security culture, Catalan people, Stoicism, Progressive education, stateless society, Umberto I of Italy, German language, Anarchist schools of thought, NEFAC, Jacques Ellul, Spanish Communist Party, Crypto-anarchism, ruling class, non-violence, Platformist, The History of Sexuality, Revolutions of 1917–23, Federación Anarquista Ibérica, propaganda of the deed, William B. Greene, Platformism, mutually exclusive, Fraye Arbeter Shtime, Adolf Hitler, oxymoron, Paris Commune, Anarchism in Italy#Postwar years and today, Oranienburg, abstentionism, Free Society, Henry David Thoreau, privative alpha, George I of Greece, communards, Gustav Landauer, Lucifer the Lightbearer, Moses Harman, coercion, regicide, rationalist, Resistance during World War II, Christ (title), Bohemianism, individualism, Crass, black bloc, Spanish Revolution of 1936, Erich Mühsam, Empress Elisabeth of Austria, Free association (communism and anarchism), general strike, Francesc Ferrer i Guàrdia, Catalan anarchist pedagogue and free-thinker, veganarchism, Traditional knowledge, Japanese Anarchist Federation, Diogenes of Sinope, Hierarchy, sexual revolution, Naturism, Bavarian Soviet Republic, February Revolution, Eugene Varlin, Renaissance humanism, Mexican Liberal Party, Friedrich Engels, Fernando Tarrida del Mármol, Caliphate, Marxism, Jesus, John Cage, Umanita Nova, Anarcho-pacifism, Peter Kropotkin, Religious anarchism, Anselme Bellegarrigue, civilisation, moral obligation, hedonist, Free Territory (Ukraine), -ism, neo-liberalism, Austrian School, philosophy, freethought, Joseph Goebbels, Conservatism, anarchist economics, Cavalier, Maximilien de Robespierre, Comstockery, Dorothy Day, Anarchism in France, Fédération anarchiste, World Economic Forum, Amparo Poch y Gascón, Sex Pistols, women's rights, collectivisation, Taoism, common ownership, William Batchelder Greene, Collective farming, popular education, biphobia, targeted killings, Protestant Christianity, state socialism, Marie François Sadi Carnot, Stephen Pearl Andrews, World Trade Organization, Communist Party of Spain (main), Pluto Press, Levante, Spain, Alexander Berkman, Wilhelm Weitling, Kharijites, Bolshevik, Liberty (1881–1908), Anarchist Aragon, social democrats, Dielo Truda, Post-left anarchy, Age of Enlightenment, Blanquism, Walden, mutual aid (organization), Far-left politics, privative, revolutions of 1848, anarchism and nationalism, punk rock, Étienne de La Boétie, Max Stirner, Jacobin (politics), agriculture, anarchy, Confederacion General del Trabajo de España, toleration, reformism, International Anarchist Congress of Amsterdam, The Ego and Its Own, Ukraine, Civil Disobedience (Thoreau), Spanish Civil War, David Graeber, Anarchism and issues related to love and sex, James Guillaume, Insurrectionary anarchism, Political repression, International Workers' Association, Barcelona, Bulgaria, Voline, Zeno of Citium, anarcho-communists, organized religion, libertarianism, bisexuality, Ricardo Flores Magón, Henri Zisly, Eight-hour day, Freetown Christiania, heteronormativity, Mikhail Bakunin, Propagandaministerium, Ezra Heywood, individual reappropriation, Modern School (United States), archon, Confédération nationale du travail, socialist movement, History of Islam, Max Nettlau, Political Justice, Reichstag fire, Anti-Christianity, decentralised, Issues in anarchism#Communism, deschooling, Christian movement, squatter, Anarchism in Germany, Catalonia, Louise Michel, Solidarity Federation, What is Property?, European individualist anarchism, Pierre-Joseph Proudhon, Mexican Revolution, wikt:anarchism, Blackshirts, Jewish anarchism, Russian Civil War, property rights, anti-authoritarian, individual reclamation, propaganda by the deed, from each according to his ability, to each according to his need, Feminist movement, Confiscation, social anarchism, Anarchism in Russia, Daniel Guérin, Uruguayan Anarchist Federation, Anarcha-feminism, Enragés, Cynicism (philosophy), workers' council, The Word (free love), Allen Ginsberg, Campaign for Nuclear Disarmament, antimilitarism, Workers' self-management, Federación Obrera Regional Argentina, self-governance, free market, Carlos I of Portugal, Simon Critchley, Anti-clericalism, heterosexual, Layla AbdelRahim, Mexican Anarchist Federation, Anarchism and Marxism, October Revolution, Anti-nuclear movement, Joseph Déjacque, Bolsheviks, Luigi Fabbri, morality, Communist party, Sam Dolgoff, united front, Ammon Hennacy, social ecology, commune (intentional community), Oscar Wilde, French Revolution, egoist anarchism, Comintern, transphobia, anarchism without adjectives, social control, means of production, Michel Onfray, Anarchism in France#The Fourth Republic (1945–1958), syndicalism, Anarchism in Spain, Iberian Anarchist Federation, International of Anarchist Federations, Emma Goldman, Netherlands, anarchist free school, International Workingmen's Association, Queer anarchism, Cantonal Revolution, trade unionism, Karl Marx, LGBT community, humanism, Anti-fascism, Carrara, political philosophy, Anarcho-transhumanism, libertarian socialist, Russian Revolution (1917), Two Cheers for Anarchism: Six Easy Pieces on Autonomy, Dignity, and Meaningful Work and Play, Emile Armand, insurrectionary anarchism, individual, Zhuang Zhou, Free Territory, White movement, Greenwich Village, Virginia Bolten, transcendentalist, public choice theory, wikt:brigand, Issues in anarchism#Participation in statist democracy, free love, Mutualism (economic theory), Anarchist St. Imier International, censorship, federalist, 6 February 1934 crisis, biennio rosso, anti-clerical, centralism, Anarchism: A Documentary History of Libertarian Ideas, minarchism, James C. Scott, First International, homosexuality, political theology, spontaneous order, Oranienburg concentration camp, anarcho-communism, negative liberty, post-modernism, Anarchism in Italy, Leopold Kohr, union of egoists, counterculture, Miguel Gimenez Igualada, philosophical anarchism, International Libertarian Solidarity, homosexual, Counterculture of the 1960s, Errico Malatesta, strikebreaker, Workers' Party of Marxist Unification, Clifford Harper, Reification (fallacy), patriarchy, anarchist law, Apostle (Christian), market (economics), Summerhill School, positive liberty, socialism, feminism, Direct action, Melchor Rodríguez García, William Godwin, Nazi concentration camps, Synthesist anarchism, Margaret Anderson, Han Ryner, Federation of Organized Trades and Labor Unions, technology, Workers Solidarity Movement, Edmund Burke, Encyclopædia Britannica, state (polity), Herbert Read, Park Güell, utilitarian, far right leagues, Limited government, self-ownership, Pejorative, homophobia, Industrial Workers of the World, The Dispossessed, Hague Congress (1872), Stalinism, Reciprocity (cultural anthropology), Fernand Pelloutier, individualist anarchism in France, The False Principle of our Education, individualist anarchism, Pierre Monatte, Soviet Union, counter-economics, Rudolf Rocker, Anarchism and capitalism, Parma, Black Rose Books, lesbian, Arditi del Popolo, Emile Armand (1872–1962), who propounded the virtues of free love in the Parisian anarchist milieu of the early 20th century, collectivism, Development criticism, John Henry Mackay, Benoît Broutchoux, Illegalism, Laozi, feminist, Christiaan Cornelissen, Syndicalist Workers' Federation, anarcho-syndicalism, Andalusia, Renzo Novatore, trade union, autonomist marxism, dictatorship of the proletariat, Mujeres Libres, Voltairine de Cleyre, Post-anarchism, participatory economics, Confederación Nacional del Trabajo, Syncretic politics, direct democracy, Jean-Jacques Rousseau, Green anarchism, Surrealism, labour unions, A. S. Neill, christian anarchist, Bonnot Gang, Anti-capitalism, Anarchism in Brazil, simple living, enlightened self-interest, Confédération générale du travail, class conflict, International Workers' Day, Hébertists, Gerrard Winstanley, Francoism, anarcho-pacifist, Andrej Grubacic, individualist anarchist and social anarchist thinkers., April Carter, private property, penal colonies, Libertarian socialism, Camillo Berneri, Christian anarchism, transhumanism, Lucifer, the Light-Bearer, Edna St. Vincent Millay, unschooling, Leo Tolstoy, M. E. Lazarus, Spanish Anarchists, Buddhist anarchism, ideology, William McKinley, anarcho-primitivism, Francesc Pi i Margall, :Category:Anarchism by country, International Workers Association, Anarcho-capitalism, Lois Waisbrooker, wikt:Solidarity, Baja California, social revolution, Unione Sindacale Italiana, Lev Chernyi, Alex Comfort, Sonnenburg, Leon Czolgosz, Volin, utopian, Argentine Libertarian Federation, Nudism, Left-wing market anarchism, insurrection, definitional concerns in anarchist theory, infinitive, affinity group, World Trade Organization Ministerial Conference of 1999 protest activity, class struggle, nonviolence, John Zerzan, poststructuralist, Noam Chomsky, Second Fitna, Julian Beck, Philadelphes, League of Peace and Freedom, Fédération Anarchiste, Kronstadt rebellion, Cold War, André Breton, Silvio Gesell, libertarian anarchism, voluntary association, anti-globalisation movement, birth control, L. Susan Brown, anarcho-naturism, personal property, Roundhead, Harold Barclay, The Joy of Sex, Council communism, Lucía Sánchez Saornil, tyrannicide, Neopaganism, lois scélérates, Johann Most, Anarchist Catalonia, Albert Camus, Protests of 1968, Alexander II of Russia, Spain's economy, Federazione Anarchica Italiana, Cuba, German Revolution of 1918–1919, stirner, Property is theft, Situationist International, law and economics

  • Add support for SMART notation for TfidfModel. Fix #1785 (@markroxor, #1791)

    • Natural extension of TfidfModel to allow different weighting and normalization schemes 
      from gensim.corpora import Dictionary
from gensim.models import TfidfModel
import gensim.downloader as api

data = api.load("text8")
dct = Dictionary(data)
corpus = [dct.doc2bow(line) for line in data]

# Train Tfidf model using the SMART notation, smartirs="ntc" where
# 'n' - natural term frequency
# 't' - idf document frequency
# 'c' - cosine normalization
#
# More information about possible values available in documentation or https://nlp.stanford.edu/IR-book/html/htmledition/document-and-query-weighting-schemes-1.html

model = TfidfModel(corpus, id2word=dct, smartirs="ntc")
vectorized_corpus = list(model[corpus])
    • SMART Information Retrieval System (wiki)

  • Add CircleCI for building Gensim documentation. Fix #1807 (@menshikh-iv, #1822)

    • An easy way to preview the rendered documentation (especially, if don't use Linux)
      • Go to "Details" link of CircleCI in your PR, click on the "Artifacts" tab, choose the HTML file that you want to view; a new tab will open with the rendered HTML page
    • Integration with Github, to see the documentation directly from the pull request page

🔴 Bug fixes:

📚 Tutorial and doc improvements:

👍 Improvements:

⚠️ Deprecations (will be removed in the next major release)

  • Remove

    • gensim.models.wrappers.fasttext (obsoleted by the new native gensim.models.fasttext implementation)
    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki (all of these obsoleted by the new native gensim.scripts.segment_wiki implementation)
    • "deprecated" functions and attributes

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils
3.2.0

Christmas Come Early

@menshikh-iv menshikh-iv released this Dec 9, 2017 · 2 commits to develop since this release

Assets

3.2.0, 2017-12-09

🌟 New features:

  • New download API for corpora and pre-trained models (@chaitaliSaini & @menshikh-iv, #1705 & #1632 & #1492)

    • Download large NLP datasets in one line of Python, then use with memory-efficient data streaming: 
      import gensim.downloader as api

for article in api.load("wiki-english-20171001"):
    print(article)
    • Don’t waste time searching for good word embeddings, use the curated ones: 
      import gensim.downloader as api

model = api.load("glove-twitter-25")
model.most_similar("engineer")

# [('specialist', 0.957542896270752),
#  ('developer', 0.9548177123069763),
#  ('administrator', 0.9432312846183777),
#  ('consultant', 0.93915855884552),
#  ('technician', 0.9368376135826111),
#  ('analyst', 0.9342101216316223),
#  ('architect', 0.9257484674453735),
#  ('engineering', 0.9159940481185913),
#  ('systems', 0.9123805165290833),
#  ('consulting', 0.9112802147865295)]
    • Blog post introducing the API and design decisions.
    • Jupyter notebook with examples

  • New model: Poincaré embeddings (@jayantj, #1696 & #1700 & #1757 & #1734)

    • Embed a graph (taxonomy) in the same way as word2vec embeds words: 
      from gensim.models.poincare import PoincareRelations, PoincareModel
from gensim.test.utils import datapath

data = PoincareRelations(datapath('poincare_hypernyms.tsv'))
model = PoincareModel(data)
model.kv.most_similar("cat.n.01")

# [('kangaroo.n.01', 0.010581353439700418),
# ('gib.n.02', 0.011171531439892076),
# ('striped_skunk.n.01', 0.012025106076442395),
# ('metatherian.n.01', 0.01246679759214648),
# ('mammal.n.01', 0.013281303506525968),
# ('marsupial.n.01', 0.013941330203709653)]
    • Tutorial on Poincaré embeddings (Jupyter notebook).
    • Model introduction and the journey of its implementation (blog post).
    • Original paper on arXiv.

  • Optimized FastText (@manneshiva, #1742)

    • New fast multithreaded implementation of FastText, natively in Python/Cython. Deprecates the existing wrapper for Facebook’s C++ implementation. 
      import gensim.downloader as api
from gensim.models import FastText

model = FastText(api.load("text8"))
model.most_similar("cat")

# [('catnip', 0.8538144826889038),
#  ('catwalk', 0.8136177062988281),
#  ('catchy', 0.7828493118286133),
#  ('caf', 0.7826495170593262),
#  ('bobcat', 0.7745151519775391),
#  ('tomcat', 0.7732658386230469),
#  ('moat', 0.7728310823440552),
#  ('caye', 0.7666271328926086),
#  ('catv', 0.7651021480560303),
#  ('caveat', 0.7643581628799438)]

  • Binary pre-compiled wheels for Windows, OSX and Linux (@menshikh-iv, MacPython/gensim-wheels/#7)

    • Users no longer need to have a C compiler for using the fast (Cythonized) version of word2vec, doc2vec, fasttext etc.
    • Faster Gensim pip installation

  • Added DeprecationWarnings to deprecated methods and parameters, with a clear schedule for removal.

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

⚠️ Deprecations (will be removed in the next major release)

  • Remove

    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils
3.1.0

3.1.0

@menshikh-iv menshikh-iv released this Nov 6, 2017 · 1 commit to develop since this release

3.1.0, 2017-11-06

🌟 New features:

  • Massive optimizations to LSI model training (@isamaru, #1620 & #1622)
    • LSI model allows use of single precision (float32), to consume 40% less memory while being 40% faster.
    • LSI model can now also accept CSC matrix as input, for further memory and speed boost.
    • Overall, if your entire corpus fits in RAM: 3x faster LSI training (SVD) in 4x less memory! 
      # just an example; the corpus stream is up to you
streaming_corpus = gensim.corpora.MmCorpus("my_tfidf_corpus.mm.gz")

# convert your corpus to a CSC sparse matrix (assumes the entire corpus fits in RAM)
in_memory_csc_matrix = gensim.matutils.corpus2csc(streaming_corpus, dtype=np.float32)

# then pass the CSC to LsiModel directly
model = LsiModel(corpus=in_memory_csc_matrix, num_topics=500, dtype=np.float32)
    • Even if you continue to use streaming corpora (your training dataset is too large for RAM), you should see significantly faster processing times and a lower memory footprint. In our experiments with a very large LSI model, we saw a drop from 29 GB peak RAM and 38 minutes (before) to 19 GB peak RAM and 26 minutes (now): 
      model = LsiModel(corpus=streaming_corpus, num_topics=500, dtype=np.float32)
  • Add common terms to Phrases. Fix #1258 (@alexgarel, #1568)
    • Phrases allows to use common terms in bigrams. Before, if you are searching to reveal ngrams like car_with_driver and car_without_driver, you can either remove stop words before processing, but you will only find car_driver, or you won't find any of those forms (because they have three words, but also because high frequency of with will avoid them to be scored correctly), inspired by ES common grams token filter. 
      phr_old = Phrases(corpus)
phr_new = Phrases(corpus, common_terms=stopwords.words('en'))

print(phr_old[["we", "provide", "car", "with", "driver"]])  # ["we", "provide", "car_with", "driver"]
print(phr_new[["we", "provide", "car", "with", "driver"]])  # ["we", "provide", "car_with_driver"]
  • New segment_wiki.py script (@menshikh-iv, #1483 & #1694)

    • CLI script for processing a raw Wikipedia dump (the xml.bz2 format provided by WikiMedia) to extract its articles in a plain text format. It extracts each article's title, section names and section content and saves them as json-line:

      python -m gensim.scripts.segment_wiki -f enwiki-latest-pages-articles.xml.bz2 | gzip > enwiki-latest-pages-articles.json.gz

      Processing the entire English Wikipedia dump (13.5 GB, link here) takes about 2.5 hours (i7-6700HQ, SSD).

      The output format is one article per line, serialized into JSON:

         for line in smart_open('enwiki-latest-pages-articles.json.gz'):  # read the file we just created
       article = json.loads(line)
       print("Article title: %s" % article['title'])
       for section_title, section_text in zip(article['section_titles'], article['section_texts']):
           print("Section title: %s" % section_title)
           print("Section text: %s" % section_text)
 ```

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

⚠️ Deprecation part (will come into force in the next major release)

  • Remove

    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils

Also, we'll create experimental subpackage for unstable models. Specific lists will be available in the next major release.

Downloads

3.0.1

3.0.1

@menshikh-iv menshikh-iv released this Oct 12, 2017 · 3 commits to develop since this release

3.0.1, 2017-10-12

🔴 Bug fixes:

📚 Tutorial and doc improvements:

⚠️ Deprecation part (will come into force in the next release)

  • Remove

    • gensim.examples
    • gensim.nosy
    • gensim.scripts.word2vec_standalone
    • gensim.scripts.make_wiki_lemma
    • gensim.scripts.make_wiki_online
    • gensim.scripts.make_wiki_online_lemma
    • gensim.scripts.make_wiki_online_nodebug
    • gensim.scripts.make_wiki

  • Move

    • gensim.scripts.make_wikicorpus ➡ gensim.scripts.make_wiki.py
    • gensim.summarization ➡ gensim.models.summarization
    • gensim.topic_coherence ➡ gensim.models._coherence
    • gensim.utils ➡ gensim.utils.utils (old imports will continue to work)
    • gensim.parsing.* ➡ gensim.utils.text_utils

Also, we'll create experimental subpackage for unstable models. Specific lists will be available in the next release.

Downloads

3.0.0

GSoC storm

@menshikh-iv menshikh-iv released this Sep 27, 2017 · 1 commit to develop since this release

3.0.0, 2017-09-27

🌟 New features:

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

Downloads

2.3.0

Docker image and integration with Sklearn

@menshikh-iv menshikh-iv released this Jul 25, 2017 · 4 commits to develop since this release

2.3.0, 2017-07-25

🌟 New features:

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

Downloads

2.2.0

Integration with Keras and Sklearn, LdaModel topic difference

@menshikh-iv menshikh-iv released this Jun 21, 2017 · 5 commits to develop since this release

2.2.0, 2017-06-21

🌟 New features:

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

Downloads

2.1.0

2.1.0 Doc2Vec visualisation

@menshikh-iv menshikh-iv released this May 12, 2017 · 4 commits to develop since this release

2.1.0, 2017-05-12

🌟 New features:

  • Add modified save_word2vec_format for Doc2Vec, to save document vectors. (@parulsethi, #1256)

👍 Improvements:

🔴 Bug fixes:

📚 Tutorial and doc improvements:

Downloads

热门度与活跃度
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Watchers：457
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创建时间： 2011-02-10 15:43:04
最后Commits： 昨天
RaRe-Technologies
RaRe Technologies
Practical R&D in Machine Learning and Natural Language Processing
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分类：机器学习 / Python开发
收录时间：2016-09-10 16:55:26