Deterministic Independent Component Analysis

author: Csaba Szepesvári, Department of Computing Science, University of Alberta
published: Sept. 27, 2015,   recorded: July 2015,   views: 1790

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We study independent component analysis with noisy observations. We present, for the first time in the literature, consistent, polynomial-time algorithms to recover non-Gaussian source signals and the mixing matrix with a reconstruction error that vanishes at a 1/T√ rate using T observations and scales only polynomially with the natural parameters of the problem. Our algorithms and analysis also extend to deterministic source signals whose empirical distributions are approximately independent.

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