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From Gilles <gil...@harfang.homelinux.org>
Subject Re: [math] BOBYQAOptimizer hang
Date Thu, 19 Dec 2013 00:21:51 GMT
Hi.

On Wed, 18 Dec 2013 12:58:52 -0500, enzhong.fu@pnc.com wrote:
> I ran into a case that BOBYQAOptimizer hang in line 485. trsbox is 
> pretty
> complex method and I'm not familiar with the algorithm. It seems 
> going
> into infinite loop between different states.
>
>             final double[] dsqCrvmin = trsbox(delta, gnew, xbdi, s,
>                                               hs, hred);
>
> Here is the test case for it. After reducing the value to <2.24 it 
> hang in
> trsbox method without progress.
>
>
> Can someone shed light on what might be happening, and how to deal 
> with
> it? Thanks.

The short story is that BOBYQAOptimzer is not really supported.
The long story is on the bug-tracking system:
   https://issues.apache.org/jira/browse/MATH-621

Sorry,
Gilles


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