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[Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result
From: |
Marco Caliari |
Subject: |
[Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result |
Date: |
Sat, 12 May 2018 03:37:56 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 |
Follow-up Comment #6, bug #53869 (project octave):
What about a left preconditioning like
## Solve for the residues.
d = max (abs (A), [], 2);
r = (diag (d) \ A) \ (B ./ d);
It seems to fix the problem, for me. Of course, it would be better to
construct A and B already in a normalized way, but I do not know the details
of the algorithm.
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- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, anonymous, 2018/05/09
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Rik, 2018/05/09
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Tony Richardson, 2018/05/09
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Tony Richardson, 2018/05/09
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Rik, 2018/05/09
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Tony Richardson, 2018/05/10
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result,
Marco Caliari <=
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Rik, 2018/05/14
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Marco Caliari, 2018/05/15
- [Octave-bug-tracker] [bug #53869] Residue returning an inaccurate result, Rik, 2018/05/15