Blind matrix decomposition via genetic optimization of sparseness and nonnegativity constraints

Kurt Stadlthanner, Fabian J. Theis, Elmar W. Lang, Ana Maria Tomé, Carlos G. Puntonet

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Nonnegative Matrix Factorization (NMF) has proven to be a useful tool for the analysis of nonnegative multivariate data. However, it is known not to lead to unique results when applied to nonnegative Blind Source Separation (BSS) problems. In this paper we present first results of an extension to the NMF algorithm which solves the BSS problem when the underlying sources are sufficiently sparse. As the proposed target function is discontinuous and possesses many local minima, we use a genetic algorithm for its minimization. Application to a microarray data set will be considered also.

Original languageEnglish
Title of host publicationArtificial Neural Networks - ICANN 2007 - 17th International Conference, Proceedings
PublisherSpringer Verlag
Pages799-808
Number of pages10
EditionPART 1
ISBN (Print)9783540746898
DOIs
StatePublished - 2007
Externally publishedYes
Event17th International Conference on Artificial Neural Networks, ICANN 2007 - Porto, Portugal
Duration: 9 Sep 200713 Sep 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 1
Volume4668 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference17th International Conference on Artificial Neural Networks, ICANN 2007
Country/TerritoryPortugal
CityPorto
Period9/09/0713/09/07

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