optim: abnormal termination in lnsrch (resend)
Mario Valle wrote:
[sorry, forgot some details...] 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?
We need more information. You can also try the additional argument to optim for tracing the optimization. Use optim(param, fun, method='L-BFGS-B', lower=lo, upper=up ,control=list(trace=6)) to get more information. Berend
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