[SciPy-user] Least squares for sparse matrices?
Fri Nov 21 12:43:10 CST 2008
On Fri, 21 Nov 2008 11:14:27 -0700
Andy Fraser <email@example.com> wrote:
> I am trying to understand the behavior of matrices that
> Radon transforms and their inverses. So far, I've used
> the following to experiment with various values of
> V_1,resids,rank,s =
> Is there a sparse version of lstsq that will let me
> sparseness of M_Radon?
> It would be even better if there were something like a
>sparse SVD that
> would let me pre-calculate an SVD decomposition and then
>later use it to
> invert several U_0 vectors.
> Andy Fraser ISR-2 (MS:B244)
> firstname.lastname@example.org Los Alamos National Laboratory
> 505 665 9448 Los Alamos, NM 87545
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