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Subject [math] BOBYQAOptimizer hang
Date Wed, 18 Dec 2013 17:58:52 GMT
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.


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