[SciPy-dev] Inconsistent behavior in optimize wrt the type of the initial guess (array versus matrix)

Tim Leslie tim.leslie at gmail.com
Thu Jan 11 08:30:11 CST 2007


On 1/12/07, Nils Wagner <nwagner at iam.uni-stuttgart.de> wrote:
> Tim Leslie wrote:
> > On 1/11/07, Nils Wagner <nwagner at iam.uni-stuttgart.de> wrote:
> >
> >>  Hi,
> >>
> >> I have observed some inconsistent behavior of the optimization routines
> >> wrt to the type of the initial guess.
> >> I mean matrix versus array.
> >>
> >> For example optimize.fmin_ncg works with a matrix input while fmin_bfgs
> >> segfaults.
> >>
> >
> > I can confirm this segfault. Nils, would you like to open a ticket for
> > this so it doesn't get lost?
> >
> > Cheers,
> >
> > Tim
> >
> >
> Hi Tim,
>
> I have already filed a ticket. Maybe it's the wrong place but I guess
> the segfault is connected with numpy/core.
> Is that correct ?
> http://projects.scipy.org/scipy/numpy/ticket/418

Ah ok great, I hadn't noticed that there. I would have filed it as a
scipy bug, since it needs parts of scipy to trigger it, even if the
bug does turn out to be in numpy, but I'm sure it doesn't really
matter too much.

Tim

>
> Cheers,
>
>                  Nils
>
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