Revision as of 20:03, 29 January 2007 edit 132.246.126.153 (talk) Added ref. to Buntine's multinomial PCA + earlier ref to NMF-PLSA equivalence ← Previous edit		Revision as of 20:16, 29 January 2007 edit undo 132.246.126.153 (talk) →Relation to Data Clustering Next edit →
Line 24: It is also known that NMF is an instance of so-called "multinomial PCA". <ref>Wray Buntine, "~~Variational~~[http://cosco.hiit.fi/Articles/ecml02.pdf Extensions to EM and Multinomial PCA]", Proc. European Conference on Machine Learning (ECML-02), LNAI 2430, pp. 23-34, 2002. </ref> When NMF is obtained by minimizing the [[Kullback–Leibler divergence]], it is also equivalent to another instance of multinomial PCA, [[probabilistic latent semantic analysis]], <ref>Eric Gaussier and Cyril Goutte, "[http://eprints.pascal-network.org/archive/00000971/01/39-gaussier.pdf Relation between PLSA and NMF and Implications]", Proc. 28th international ACM SIGIR conference on Research and development in information retrieval (SIGIR-05), pp. 601-602, 2005. </ref> which has long been used for analyzing and clustering textual data. == Uniqueness ==

Non-negative matrix factorization: Difference between revisions