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2012 | OriginalPaper | Chapter
Nonnegative Matrix Factorization via Generalized Product Rule and Its Application for Classification
Authors : Yu Fujimoto, Noboru Murata
Published in: Latent Variable Analysis and Signal Separation
Publisher: Springer Berlin Heidelberg
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Nonnegative Matrix Factorization (NMF) is broadly used as a mathematical tool for processing tasks of tabulated data. In this paper, an extension of NMF based on a generalized product rule, defined with a nonlinear one-parameter function and its inverse, is proposed. From a viewpoint of subspace methods, the extended NMF constructs flexible subspaces which plays an important role in classification tasks. Experimental results on benchmark datasets show that the proposed extension improves classification accuracies.