Thread Subject: Noobie Question about fminunc

Hi all!
I'm a bit confused. If I get this message:
"Optimization terminated: relative infinity-norm of gradient
less than options.TolFun."

Does it mean the optimization was successful? I have set the
option 'TolFun' to 1e-7.


Thanks a lot!
Volker

"Volker K" <klinkv.NOSPAM@yahoo.de> wrote in message
<fsoc4p$jn4$1@fred.mathworks.com>...
> Hi all!
> I'm a bit confused. If I get this message:
> "Optimization terminated: relative infinity-norm of gradient
> less than options.TolFun."
>
> Does it mean the optimization was successful? I have set the
> option 'TolFun' to 1e-7.

Sigh. I wish they had chosen different wording
for the optimizers. It did not say it terminated
unsuccessfully. Terminated here is a synonym
for "finished" or "done".

It has stopped at a point where the gradient
is close enough to zero that it sees no
improvement within the tolerances provided.
At a minimum, the gradient would of course
be zero.

HTH,
John