gensim – Topic Modelling in Python ================================== [![Build Status](https://travis-ci.org/RaRe-Technologies/gensim.svg?branch=develop)](https://travis-ci.org/RaRe-Technologies/gensim) [![GitHub release](https://img.shields.io/github/release/rare-technologies/gensim.svg?maxAge=3600)](https://github.com/RaRe-Technologies/gensim/releases) [![Wheel](https://img.shields.io/pypi/wheel/gensim.svg)](https://pypi.python.org/pypi/gensim) [![DOI](https://zenodo.org/badge/DOI/10.13140/2.1.2393.1847.svg)](https://doi.org/10.13140/2.1.2393.1847) [![Mailing List](https://img.shields.io/badge/-Mailing%20List-lightgrey.svg)](https://groups.google.com/forum/#!forum/gensim) [![Gitter](https://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-09a3d5.svg)](https://gitter.im/RaRe-Technologies/gensim) [![Follow](https://img.shields.io/twitter/follow/spacy_io.svg?style=social&label=Follow)](https://twitter.com/gensim_py) Gensim is a Python library for *topic modelling*, *document indexing* and *similarity retrieval* with large corpora. Target audience is the *natural language processing* (NLP) and *information retrieval* (IR) community. Features -------- - All algorithms are **memory-independent** w.r.t. the corpus size (can process input larger than RAM, streamed, out-of-core), - **Intuitive interfaces** - easy to plug in your own input corpus/datastream (trivial streaming API) - easy to extend with other Vector Space algorithms (trivial transformation API) - Efficient multicore implementations of popular algorithms, such as online **Latent Semantic Analysis (LSA/LSI/SVD)**, **Latent Dirichlet Allocation (LDA)**, **Random Projections (RP)**, **Hierarchical Dirichlet Process (HDP)** or **word2vec deep learning**. - **Distributed computing**: can run *Latent Semantic Analysis* and *Latent Dirichlet Allocation* on a cluster of computers. - Extensive [documentation and Jupyter Notebook tutorials]. If this feature list left you scratching your head, you can first read more about the [Vector Space Model] and [unsupervised document analysis] on Wikipedia. Support ------------ Please raise potential bugs on [github](https://github.com/RaRe-Technologies/gensim/blob/develop/CONTRIBUTING.md). See [Contribution Guide](https://github.com/RaRe-Technologies/gensim/blob/develop/CONTRIBUTING.md) prior to raising an issue. If you have an open-ended or a research question: - [Mailing List] is the best option - [Gitter chat room] is also available [Mailing List]: https://groups.google.com/forum/#!forum/gensim [Gitter chat room]: https://gitter.im/RaRe-Technologies/gensim Installation ------------ This software depends on [NumPy and Scipy], two Python packages for scientific computing. You must have them installed prior to installing gensim. It is also recommended you install a fast BLAS library before installing NumPy. This is optional, but using an optimized BLAS such as [ATLAS] or [OpenBLAS] is known to improve performance by as much as an order of magnitude. On OS X, NumPy picks up the BLAS that comes with it automatically, so you don’t need to do anything special. The simple way to install gensim is: pip install -U gensim Or, if you have instead downloaded and unzipped the [source tar.gz] package, you’d run: python setup.py test python setup.py install For alternative modes of installation (without root privileges, development installation, optional install features), see the [documentation]. This version has been tested under Python 2.7, 3.5 and 3.6. Gensim’s github repo is hooked against [Travis CI for automated testing] on every commit push and pull request. Support for Python 2.6, 3.3 and 3.4 was dropped in gensim 1.0.0. Install gensim 0.13.4 if you *must* use Python 2.6, 3.3 or 3.4. Support for Python 2.5 was dropped in gensim 0.10.0; install gensim 0.9.1 if you *must* use Python 2.5). How come gensim is so fast and memory efficient? Isn’t it pure Python, and isn’t Python slow and greedy? -------------------------------------------------------------------------------------------------------- Many scientific algorithms can be expressed in terms of large matrix operations (see the BLAS note above). Gensim taps into these low-level BLAS libraries, by means of its dependency on NumPy. So while gensim-the-top-level-code is pure Python, it actually executes highly optimized Fortran/C under the hood, including multithreading (if your BLAS is so configured). Memory-wise, gensim makes heavy use of Python’s built-in generators and iterators for streamed data processing. Memory efficiency was one of gensim’s [design goals], and is a central feature of gensim, rather than something bolted on as an afterthought. Documentation ------------- - [QuickStart] - [Tutorials] - [Tutorial Videos] - [Official API Documentation] [QuickStart]: https://github.com/RaRe-Technologies/gensim/blob/develop/docs/notebooks/gensim%20Quick%20Start.ipynb [Tutorials]: https://github.com/RaRe-Technologies/gensim/blob/develop/tutorials.md#tutorials [Tutorial Videos]: https://github.com/RaRe-Technologies/gensim/blob/develop/tutorials.md#videos [Official Documentation and Walkthrough]: http://radimrehurek.com/gensim/ [Official API Documentation]: http://radimrehurek.com/gensim/apiref.html --------- Adopters -------- | Name | Logo | URL | Description | |----------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | RaRe Technologies | | [rare-technologies.com](http://rare-technologies.com) | Machine learning & NLP consulting and training. Creators and maintainers of Gensim. | | Mindseye | | [mindseye.com](http://www.mindseyesolutions.com/) | Similarities in legal documents | | Talentpair | ![Talentpair](https://avatars3.githubusercontent.com/u/8418395?v=3&s=100) | [talentpair.com](http://talentpair.com) | Data science driving high-touch recruiting | | Tailwind | | [Tailwindapp.com](https://www.tailwindapp.com/)| Post interesting and relevant content to Pinterest | | Issuu | | [Issuu.com](https://issuu.com/)| Gensim’s LDA module lies at the very core of the analysis we perform on each uploaded publication to figure out what it’s all about. | Sports Authority | | [sportsauthority.com](https://en.wikipedia.org/wiki/Sports_Authority)| Text mining of customer surveys and social media sources | | Search Metrics | | [searchmetrics.com](http://www.searchmetrics.com/)| Gensim word2vec used for entity disambiguation in Search Engine Optimisation | Cisco Security | | [cisco.com](http://www.cisco.com/c/en/us/products/security/index.html)| Large-scale fraud detection | 12K Research | | [12k.co](https://12k.co/)| Document similarity analysis on media articles | National Institutes of Health | | [github/NIHOPA](https://github.com/NIHOPA/pipeline_word2vec)| Processing grants and publications with word2vec | Codeq LLC | | [codeq.com](https://codeq.com)| Document classification with word2vec | Mass Cognition | | [masscognition.com](http://www.masscognition.com/) | Topic analysis service for consumer text data and general text data | | Stillwater Supercomputing | | [stillwater-sc.com](http://www.stillwater-sc.com/) | Document comprehension and association with word2vec | | Channel 4 | | [channel4.com](http://www.channel4.com/) | Recommendation engine | | Amazon | | [amazon.com](http://www.amazon.com/) | Document similarity| | SiteGround Hosting | | [siteground.com](https://www.siteground.com/) | An ensemble search engine which uses different embeddings models and similarities, including word2vec, WMD, and LDA. | | Juju | | [www.juju.com](http://www.juju.com/) | Provide non-obvious related job suggestions. | | NLPub | | [nlpub.org](https://nlpub.org/) | Distributional semantic models including word2vec. | |Capital One | | [www.capitalone.com](https://www.capitalone.com/) | Topic modeling for customer complaints exploration. | ------- Citing gensim ------------ When [citing gensim in academic papers and theses], please use this BibTeX entry: @inproceedings{rehurek_lrec, title = {{Software Framework for Topic Modelling with Large Corpora}}, author = {Radim {\v R}eh{\r u}{\v r}ek and Petr Sojka}, booktitle = {{Proceedings of the LREC 2010 Workshop on New Challenges for NLP Frameworks}}, pages = {45--50}, year = 2010, month = May, day = 22, publisher = {ELRA}, address = {Valletta, Malta}, note={\url{http://is.muni.cz/publication/884893/en}}, language={English} } [citing gensim in academic papers and theses]: https://scholar.google.com/citations?view_op=view_citation&hl=en&user=9vG_kV0AAAAJ&citation_for_view=9vG_kV0AAAAJ:NaGl4SEjCO4C [Travis CI for automated testing]: https://travis-ci.org/RaRe-Technologies/gensim [design goals]: http://radimrehurek.com/gensim/about.html [RaRe Technologies]: http://rare-technologies.com/wp-content/uploads/2016/02/rare_image_only.png%20=10x20 [rare\_tech]: //rare-technologies.com [Talentpair]: https://avatars3.githubusercontent.com/u/8418395?v=3&s=100 [citing gensim in academic papers and theses]: https://scholar.google.cz/citations?view_op=view_citation&hl=en&user=9vG_kV0AAAAJ&citation_for_view=9vG_kV0AAAAJ:u-x6o8ySG0sC [documentation and Jupyter Notebook tutorials]: https://github.com/RaRe-Technologies/gensim/#documentation [Vector Space Model]: http://en.wikipedia.org/wiki/Vector_space_model [unsupervised document analysis]: http://en.wikipedia.org/wiki/Latent_semantic_indexing [NumPy and Scipy]: http://www.scipy.org/Download [ATLAS]: http://math-atlas.sourceforge.net/ [OpenBLAS]: http://xianyi.github.io/OpenBLAS/ [source tar.gz]: http://pypi.python.org/pypi/gensim [documentation]: http://radimrehurek.com/gensim/install.html