Latent dirichlet allocation

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Latent dirichlet allocation (2003)

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by David M. Blei , Andrew Y. Ng , Michael I. Jordan , John Lafferty

Venue:	Journal of Machine Learning Research
Citations:	4360 - 92 self

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@ARTICLE{Blei03latentdirichlet,
    author = {David M. Blei and Andrew Y. Ng and Michael I. Jordan and John Lafferty},
    title = {Latent dirichlet allocation},
    journal = {Journal of Machine Learning Research},
    year = {2003},
    volume = {3},
    pages = {2003}
}

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Abstract

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. 1.

Keyphrases

latent dirichlet allocation underlying set topic probability empirical bayes parameter estimation explicit representation collaborative filtering em algorithm generative probabilistic model infinite mixture text corpus document modeling unigrams model three-level hierarchical bayesian model discrete data probabilistic lsi model text classification variational method finite mixture present efficient approximate inference technique text modeling

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