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IEICE TRANSACTIONS on Fundamentals

Quadratic Independent Component Analysis

Fabian J. THEIS, Wakako NAKAMURA

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Summary :

The transformation of a data set using a second-order polynomial mapping to find statistically independent components is considered (quadratic independent component analysis or ICA). Based on overdetermined linear ICA, an algorithm together with separability conditions are given via linearization reduction. The linearization is achieved using a higher dimensional embedding defined by the linear parametrization of the monomials, which can also be applied for higher-order polynomials. The paper finishes with simulations for artificial data and natural images.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E87-A No.9 pp.2355-2363
Publication Date
2004/09/01
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Type of Manuscript
Special Section PAPER (Special Section on Nonlinear Theory and its Applications)
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