Dear all When relax ,which algorithm is better ? Bfgs or damp ? I use bfgs,but find it very slow . Anybody who know about this ,please give some advice ,thank you . Q J Wang XiangTan University -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20081130/e722daab/attachment.htm