I did not dig deep in the sources but I thought the current
implementation is derrivied from JAMA? If not, the JAMA and Jamapack
code seems to work for me. At least they look similar by name for the
*.m file counterparts.
Arne
Am Dienstag, den 17.05.2011, 21:06 +0200 schrieb Luc Maisonobe:
> Le 17/05/2011 20:40, Arne Plöse a écrit :
> > Is there a Eigenvalue decomposition like octave "eig(m)" that takes also
> > matices that are not symmetric? Or any mathematical tip how to do this?
>
> No, we do not have an implementation for non-symmetric matrices.
> There is an open issue for that
> <https://issues.apache.org/jira/browse/MATH-235>. We would be happy to
> have one (and we would be happy to fix our SVD implementation too).
>
> Algorithms to do this generally invold first a transform to upper
> Hessenberg (i.e. upper triangular with additional non-null terms just
> below the main diagonal) and then a Schur decomposition. I think Schur
> decomposition implies working with complex elements.
>
> Patch welcome!
>
> Luc
>
> >
> > Arne
> >
> >
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