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Latent Dirichlet Allocation – Ruby Wrapper

This wrapper is based on C-code by David M. Blei. In a nutshell, it can be used to automatic cluster documents into topics. The number of topics are chosen beforehand and the topics found are usually fairly intuitive. Details of the implementation can be found in the paper by Blei, Ng, and Jordan.

Blei, David M., Ng, Andrew Y., and Jordan, Michael I. 2003. Latent dirichlet allocation. Journal of Machine Learning Research. 3 (Mar. 2003), 993-1022.