2003 LatentDirichletAllocation

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Subject Headings: Latent Dirichlet Allocation, TF-IDF, pLSI.


Cited By




We describe latent Dirichlet allocation (LDA), a generative probabilistic model for collections of discrete data such as text corpora. LDA is a three-level hierarchical Bayesian model, in which each item of a collection is modeled as a finite mixture over an underlying set of topics. Each topic is, in turn, modeled as an infinite mixture over an underlying set of topic probabilities. In the context of text modeling, the topic probabilities provide an explicit representation of a document. We present efficient approximate inference techniques based on variational methods and an EM algorithm for empirical Bayes parameter estimation. We report results in document modeling, text classification, and collaborative filtering, comparing to a mixture of unigrams model and the probabilistic LSI model.,

 AuthorvolumeDate ValuetitletypejournaltitleUrldoinoteyear
2003 LatentDirichletAllocationAndrew Y. Ng
Michael I. Jordan
David M. Blei
Latent Dirichlet AllocationThe Journal of Machine Learning Researchhttp://www.cs.princeton.edu/~blei/papers/BleiNgJordan2003.pdf10.1162/jmlr.2003.3.4-5.9932003