CCL: Re: Software for pattern recognition in QSAR studies?

To: <chemistry$at$ccl.net>
 Subj: CCL: Re: Software for pattern recognition in QSAR studies?
 Renxiao Wang wrote:
 > I am looking for a program that can apply standard pattern recognition
 > techniques. Basically, I want to study a number of samples, each of
 > which can be characterized by some properties. I would like to classify
 > these samples into several groups based on these properties, and then
 > derive a QSAR model for each group.
 > ...
 When all propoerties are non-numerical (e.g. property 1 takes values
 A or B or C, property 2 takes value red or green or blue, property 3
 takes values: alpha or beta or gamma or delta, etc...), there is
 a classification method able to compute the optimal partition,
 including the number of classes: very few methods can do this.
 Freeware with reference and documentation:
 http://petitjeanmichel.free.fr/itoweb.petitjean.freeware.html#POP
 Michel Petitjean,                     Email: petitjean$at$itodys.jussieu.fr
 ITODYS (CNRS, UMR 7086)                      ptitjean$at$ccr.jussieu.fr
 1 rue Guy de la Brosse                Phone: +33 (0)1 44 27 48 57
 75005 Paris, France.                  FAX  : +33 (0)1 44 27 68 14
 http://petitjeanmichel.free.fr/itoweb.petitjean.html