Sat, 26 Jul 2008 07:43:10 BST CiteULike: mshafiei's pca http://www.citeulike.org/user/mshafiei/tag/pca CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/mshafiei/article/1786423 <i></i><br /><br />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. Discrete Component Analysis Wray Buntine Aleks Jakulin 2007-10-19T00:52:15-00:00 lda model pca