Discrete component analysis

  • Authors:
  • Wray Buntine;Aleks Jakulin

  • Affiliations:
  • Helsinki Institute for Information Technology (HIIT), Dept. of Computer Science, University of Helsinki, Finland;Department of Knowledge Technologies, Jozef Stefan Institute, Ljubljana, Slovenia

  • Venue:
  • SLSFS'05 Proceedings of the 2005 international conference on Subspace, Latent Structure and Feature Selection
  • Year:
  • 2005

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Abstract

This article presents a unified theory for analysis of components in discrete data, and compares the methods with techniques such as independent component analysis, non-negative matrix factorisation and latent Dirichlet allocation. The main families of algorithms discussed are a variational approximation, Gibbs sampling, and Rao-Blackwellised Gibbs sampling. Applications are presented for voting records from the United States Senate for 2003, and for the Reuters-21578 newswire collection.