[SciPy-User] scipy.sparse.csr_matrix.matmat deprecation question
Nathan Bell
wnbell@gmail....
Sun Jun 27 14:05:34 CDT 2010
On Fri, Jun 25, 2010 at 1:09 PM, Andrew Schein <andrew@andrewschein.com> wrote:
> I would like to perform a matrix multiplication of the form
>
> A * B
>
> where A is dense and B is sparse CSR or COO. Does scipy.sparse have this
> capability and will it in the future? How fast is the scipy implementation
> in comparison to INTEL MKL?
>
> It appears that there is a .matmat function that has been deprecated. Does
> this reflect a retreat, or is the functionality found in some other place?
>
> Thanks,
>
Hi Andrew,
All sparse matrix multiplication functionality is exposed via
__mul__() now, so the matmat function is unnecessary. Simply using
A*B should do the appropriate thing.
I don't know how the speed compares to MKL, but the code is
implemented in C++ so it should be reasonably fast.
--
Nathan Bell wnbell@gmail.com
http://www.wnbell.com/
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