You forgot a lot of details. Can you send us more information about the
fn and also some minimal code that can reproduce the problem?
Ravi.
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Ravi Varadhan, Ph.D.
Assistant Professor, The Center on Aging and
Mario,
It seems likely that your function is not smooth in the parameters. This
may create problems for some optimizers that require smoothness. However, I
was able to get good convergence with `spg' function in my BB package.
Here is how it works:
require(BB)
Loading required package: BB
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
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