Contrasts, independent component analysis, and blind deconvolution
Pierre Comon · International Journal of Adaptive Control and Signal Processing · 2004
Abstract A general definition of contrast criteria is proposed, which induces the concept of trivial filters. These optimization criteria enjoy identifiability properties, and aim at delivering outputs satisfying specific properties, such as statistical independence or a discrete character. Several ways of building new contrast criteria are described. It is then briefly elaborated on practical numerical algorithms. Copyright © 2004 John Wiley & Sons, Ltd.