optim: abnormal termination in lnsrch (resend)
Attached a script that reproduces the problem. My function is fold.val() and at the end seems the curve contained in lnsrch.dat is fitted quite well, but optim generates the error. Thanks again! mario ------------------------- I'm using optim(param, fun, method='L-BFGS-B', lower=lo, upper=up) to minimize a certain function. Often the minimization ends with the message: ERROR: ABNORMAL_TERMINATION_IN_LNSRCH What is optim() trying to say? What have I to change in my function to make the minimization succeed? Do you think using BBoptim() instead of optim() changes anything? Thanks for your help! mario
Ing. Mario Valle Data Analysis and Visualization Group | http://www.cscs.ch/~mvalle Swiss National Supercomputing Centre (CSCS) | Tel: +41 (91) 610.82.60 v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax: +41 (91) 610.82.82 -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: lnsrch.r URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100112/a6951a66/attachment.pl> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: lnsrch.dat URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100112/a6951a66/attachment-0001.pl>