ICA by maximizing non-stability (Articolo in rivista)

Type
Label
  • ICA by maximizing non-stability (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Wang B.; Kuruoglu E. E.; Zhang J. (2009)
    ICA by maximizing non-stability
    in Lecture notes in computer science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Wang B.; Kuruoglu E. E.; Zhang J. (literal)
Pagina inizio
  • 179 (literal)
Pagina fine
  • 186 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 5441 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: ICA 2009 - Independent Component Analysis and Signal Separation. 8th International Conference (Paraty, Rio Janerio, Brasile, 15-18 Marzo 2009). Proceedings, pp. 179 - 186. (Lecture Notes in Computer Science, vol. 5441). Springer-Verlag, 2009. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Xidian University, Xi'an, China, CNR-ISTI, Pisa (literal)
Titolo
  • ICA by maximizing non-stability (literal)
Abstract
  • We propose a new approach for ICA by maximizing the non-stability contrast function in this paper. This new version of ICA is motivated by the Generalized Central Limit Theorem (GCLT), an important extension of classical CLT. We demonstrate that the classical ICA based on maximization of non-Gaussianity is a special case of the new approach of ICA we introduce here which is based on maximization of non-Stability with certain constraints. To be able to quantify non-stability, we introduce a new measure of stability namely Alpha-stable negentropy. A numerical gradient ascent algorithm for the maximization of the alpha-stable negentropy with the objective of source separation is also introduced in this paper. Experiments show that ICA by maximum of non-stability performs very successfully in impulsive source separation problems. (literal)
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