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One-unit Learning Rules for Independent Component Analysis

1996; Volume: 9; Linguagem: Inglês

Aapo Hyvärinen, Erkki Oja,

Neural dynamics and brain function

Neural one-unit learning rules for the problem of Independent Component Analysis (ICA) and blind source separation are introduced. In these new algorithms, every ICA neuron develops into a separator that finds one of the independent components. The learning rules use very simple constrained Hebbian/anti-Hebbian learning in which decorrelating feedback may be added. To speed up the convergence of these stochastic gradient descent rules, a novel computationally efficient fixed-point algorithm is introduced.