#7392: RDF/CDF matrices should call scipy for rank
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Reporter: jason | Owner: was
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.6.2
Component: linear algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by jason):
Replying to [comment:3 rbeezer]:
> As a precursor to computing rank, I've written a short routine to get
singular values and conveniently work with deciding the cutoff for zero
values. At #10802. I'll get to this ticket
> next.
>
> I think a QR decomposition can be less expensive to compute, but a bit
less reliable. And I've got good advice on how to make an automated
decision on "zero" entries with the SVD.
That's very interesting. Should we be submitting it upstream to scipy,
where it would be used by a much wider audience than Sage?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7392#comment:4>
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