[SciPy-user] eigenvalue

Reik H. Börger reikhboerger at gmx.de
Wed Dec 8 04:48:43 CST 2004


Hi Tiziano,

I looked at the symeig-routines and I am surprised - they are working 
better than scipy's. I don't know, which algorithms are used, but it 
doesn't look like cutting off the imaginary parts. It is good enough 
for me :-)
thanks alot
Reik



> You may want to have a look at:
> http://mdp-toolkit.sourceforge.net/symeig.html
>
> The symeig module contains a Python wrapper for the LAPACK functions
> to solve the standard and generalized eigenvalue problems for
> symmetric (hermitian) positive definite matrices. Those specialized
> algorithms give an important speed-up with repect to the generic
> LAPACK eigenvalue problem solver used by SciPy (scipy.linalg.eig).
>
> hth,
> tiziano



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