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Natural Language Processing

License: MIT GoDoc Build Status Go Report Card codecov Mentioned in Awesome Go Sourcegraph


Implementations of selected machine learning algorithms for natural language processing in golang. The primary focus for the package is the statistical semantics of plain-text documents supporting semantic analysis and retrieval of semantically similar documents.

Built upon the Gonum package for linear algebra and scientific computing with some inspiration taken from Python's scikit-learn and Gensim.

Check out the companion blog post or the Go documentation page for full usage and examples.



  • Expanded persistence support
  • Stemming to treat words with common root as the same e.g. "go" and "going"
  • Clustering algorithms e.g. Heirachical, K-means, etc.
  • Classification algorithms e.g. SVM, KNN, random forest, etc.


  1. Rosario, Barbara. Latent Semantic Indexing: An overview. INFOSYS 240 Spring 2000
  2. Latent Semantic Analysis, a scholarpedia article on LSA written by Tom Landauer, one of the creators of LSA.
  3. Thomo, Alex. Latent Semantic Analysis (Tutorial).
  4. Latent Semantic Indexing. Standford NLP Course
  5. Charikar, Moses S. "Similarity Estimation Techniques from Rounding Algorithms" in Proceedings of the thiry-fourth annual ACM symposium on Theory of computing - STOC ’02, 2002, p. 380.
  6. M. Bawa, T. Condie, and P. Ganesan, “LSH forest: self-tuning indexes for similarity search,” Proc. 14th Int. Conf. World Wide Web - WWW ’05, p. 651, 2005.
  7. A. Gionis, P. Indyk, and R. Motwani, “Similarity Search in High Dimensions via Hashing,” VLDB ’99 Proc. 25th Int. Conf. Very Large Data Bases, vol. 99, no. 1, pp. 518–529, 1999.
  8. Kanerva, Pentti, Kristoferson, Jan and Holst, Anders (2000). Random Indexing of Text Samples for Latent Semantic Analysis
  9. Rangan, Venkat. Discovery of Related Terms in a corpus using Reflective Random Indexing
  10. Vasuki, Vidya and Cohen, Trevor. Reflective random indexing for semi-automatic indexing of the biomedical literature
  11. QasemiZadeh, Behrang and Handschuh, Siegfried. Random Indexing Explained with High Probability
  12. Foulds, James; Boyles, Levi; Dubois, Christopher; Smyth, Padhraic; Welling, Max (2013). Stochastic Collapsed Variational Bayesian Inference for Latent Dirichlet Allocation

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