ICA through a Fisher game
Ravi C. Venkatesan · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2005
A principled theoretical framework for a novel probabilistic source separation model for lattice data is derived using an invariant extension of the Extreme Physical Information (EPI) theory. The pdf’s of the estimated sources are parameterized by a unique ansatz that satisfies the invariant EPI (IEPI) game corollary. The mixing and unmixing matrices are described by unitary operators that diagonalize the Fisher information matrix, expressed in dimensionless form through application of the ansatz. The discrete IEPI source separation model is ascribed a quantum mechanical connotation.