Mathematics in Independent Component Analysis

Chapter 12. LNCS 3195:718-725, 2004 183
8 Fabian J. Theis and Shun-ichi Amari
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Fig. 2. Example: (a) shows the 1-sparse source signals, and (b) the postnonlinear overcomplete
mixtures. The original source directions can be clearly seen in the structure
of the mixture scatterplot (c). The crosses and stars indicate the found interpolation
points used for approximating the separating nonlinearities, generated by geometrical
preprocessing. Now, according to theorem 3, the sources can be recovered uniquely,
figure (d), except for permutation and scaling.
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