[SciPy-dev] Trouble with optimize.fmin_ncg

Nils Wagner nwagner@iam.uni-stuttgart...
Wed Jul 25 12:43:41 CDT 2007


On Wed, 25 Jul 2007 10:36:03 -0700
  "Nathan Bell" <wnbell@gmail.com> wrote:
> On 7/25/07, Nils Wagner <nwagner@iam.uni-stuttgart.de> 
>wrote:
>> So, the problem seems to be connected with scipy.sparse. 
>>Nathan, do you
>> have a clue ?
> 
> Sorry about that, there was a bug when performing 
>subtraction between
> sparse and dense matrices.  It should be fixed in 
>revision 3190.
> 
Nathan,

Thank you very much! It took me a while to locate
the bug. Now it works fine again !
BTW, is there a way to support sparse vectors such
that the outer product of sparse vectors yields
a sparse matrix ?

Nils

> -- 
> Nathan Bell wnbell@gmail.com
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