Version 2.13, 09-jan-2016: Removed XTAL regression package which truned out to contain
proprietary code.
Version 2.10, 22-oct-2009: Some minor changes and bug fixes.
Version 2.09, 15-aug-2008 (latest): Interface to XTAL regression package
was added the STPRtool. XTAL implements the following regression methods:
Projection pursuit regression (SMART)
Multilayer perceptron
Multivariate adaptive regression splines
k-nearest neighbors and Constrained topological mapping
Constrained topological mapping
Version 2.08, 26-feb-2008: Some minor changes and bug fixes; kmeans renamed to cmeans;
example on implementation of custom kernel function.
Version 2.05, 19-oct-2005: A new library for optimization of
Generalized Non-negative Least Squares problem (gnnls.m) and Generalized
Nearest Point problem (gnpp.m) added.
Version 2.04, 22-dec-2004: Added implementation of the reduced set
method (by Burges, 1996) for homogeneous second order polynomial
kernels (rspoly2.m).
Version 2.03, 14-dec-2004: Added new solvers for the binary SVM problem with
L2-soft margin (svm2.m) and multi-class BSVM formulation with L2-soft margin
(bsvm2.m).
Version 2.02, 08-oct-2004: Repared functions "rsde.m", "minball.m". Added
function "knorm.m".
Version 2.01, 27-aug-2004: AdaBoost algorithm added.
Version 2.0, 24-jun-2004: Toolbox restructured, new examples added, user's
guide created with financial help of ECVision European Research Network on
Cognitive Computer Vision Systems (IST-2001-35454).