[SciPy-user] Invert a sparse matrix

Robin robince@gmail....
Thu Oct 4 06:56:27 CDT 2007


Hello,

Is there any function to invert a sparse matrix, giving a sparse result?

I couldn't find much information on this.

Also how does one do sparse matrix-vector multiplication? The resulting
vector doesn't need to be sparse, but it's important the multiplication is
done without converting the array/matrix to full form (not enough ram).

I will have a very large matrix, that must remain sparse to fit in memory,
and I need to use it for some basic operations (matrix-vector multiplication
by itself and it's inverse).

Thanks for your help,

Robin
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