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Cited by 419

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Nonsmooth nonnegative matrix factorization (nsNMF)

Pascual-Montano, A., Carazo, J.M., Kochi, K., Lehmann, D., Pascual-Marqui, R.D.·2006·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

We propose a novel nonnegative matrix factorization model that aims at finding localized, part-based, representations of nonnegative multivariate data items. Unlike the classical nonnegative matrix factorization (NMF) technique, this new model, denoted "nonsmooth nonnegative matrix factorization" (nsNMF), corresponds to the optimization of an unambiguous cost function designed to explicitly represent sparseness, in the form of nonsmoothness, which is controlled by a single parameter. In general, this method produces a set of basis and encoding vectors that are not only capable of representing the original data, but they also extract highly localized patterns, which generally lend themselves to improved interpretability. The properties of this new method are illustrated with several data sets. Comparisons to previously published methods show that the new nsNMF method has some advantages in keeping faithfulness to the data in the achieving a high degree of sparseness for both the estimated basis and the encoding vectors and in better interpretability of the factors.

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Metadata

Authors
Pascual-Montano, A., Carazo, J. M., Kochi, K., Lehmann, D., & Pascual-Marqui, R. D.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
2006-03
Volume
28
Issue
3
Pages
403-415
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2146913572
Cited by
419
References
31
FWCI
27.05
Type
journal article
Language
en
Open access
closed

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