Sparse nonnegative matrix factorization using ℓ0-constraints

Robert Peharz, Michael Stark, Franz Pernkopf

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

19 Citations (Scopus)

Abstract

Although nonnegative matrix factorization (NMF) favors a part-based and sparse representation of its input, there is no guarantee for this behavior. Several extensions to NMF have been proposed in order to introduce sparseness via the ℓ1-norm, while little work is done using the more natural sparseness measure, the ℓ0-pseudo-norm. In this work we propose two NMF algorithms with ℓ0-sparseness constraints on the bases and the coefficient matrices, respectively. We show that classic NMF [1] is a suited tool for ℓ0-sparse NMF algorithms, due to a property we call sparseness maintenance. We apply our algorithms to synthetic and real-world data and compare our results to sparse NMF [2] and nonnegative KSVD [3].

Original languageEnglish
Title of host publicationProceedings of the 2010 IEEE International Workshop on Machine Learning for Signal Processing, MLSP 2010
PublisherInstitute of Electrical and Electronics Engineers
Pages83-88
Number of pages6
ISBN (Print)9781424478774
DOIs
Publication statusPublished - 24 Nov 2010
Externally publishedYes
Event20th IEEE International Workshop on Machine Learning for Signal Processing, MLSP 2010 - Kittila, Finland
Duration: 29 Aug 20101 Sept 2010
Conference number: 20

Conference

Conference20th IEEE International Workshop on Machine Learning for Signal Processing, MLSP 2010
Abbreviated titleMLSP 2010
Country/TerritoryFinland
CityKittila
Period29/08/101/09/10

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