Hi, June I was working on a Levenberg - Marquardt algorithm a few years ago but had to put it aside for other projects. It is working but not extensively tested. It is quite 'loopy' (I was a really new Jer - still am but have more knowledge now) and needs some work, particularly on the penalty functions. It would benefit from another set of eyes looking at it as I too need a minimizer.
Do you want me to send it directly to you? Given its state, I am not sure that the broader forum needs to see this. The other approach is to check out the LBFGS package in the add-ons. I haven't used it and I see that it needs some dll work. Bob -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of June Kim Sent: March 26, 2008 3:04 AM To: Programming forum Subject: [Jprogramming] NLP Solver in J? There is a solver who may add-in to Excel that comes with the CD. It uses GRG2 algorithm. http://support.microsoft.com/kb/82890 I'm looking for something like that. Does anyone have(or know of) an NLP solver in J? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
