rbfpreimg - Schoelkopf's fixed-point algorithm. rbfpreimg2 - Gradient optimization. rbfpreimg3 - Kwok-Tsang's algorithm. About: Statistical Pattern Recognition Toolbox (C) 1999-2004, Written by Vojtech Franc and Vaclav Hlavac Czech Technical University Prague Faculty of Electrical Engineering Center for Machine Perception Modifications: 20-sep-2004, VF