RE: [Bug-gsl] bug report gsl_multifit_wlinear_svd

[Mezger Anton-Chr.]

A small example. I took also the source (I hope the latest one) and a
commented the balancing out which gives then correct results.

Best Regards


-----Original Message-----
From: Brian Gough [mailto:address@hidden 
Sent: Sonntag, 8. November 2009 21:32
To: Mezger Anton-Chr.
Cc: address@hidden
Subject: Re: [Bug-gsl] bug report gsl_multifit_wlinear_svd

At Fri, 6 Nov 2009 09:47:51 +0100,
Mezger Anton-Chr. wrote:
> The introduction of balancing the matrix does not seem to account for
a
> rank reduction. The routine gsl_multifit_wlinear_svd performs well
when
> no rank reduction is taken place. When the rank gets reduced however
the
> results are wrong and when the balancing code is taken out the results
> are correct. Do I see this correctly and when yes is it possible to
> correct it ?

Thanks for the bug report.  Could you send a small example program
which demonstrates the problem -- thank you.

-- 
Brian Gough

GNU Scientific Library -
http://www.gnu.org/software/gsl/

gsl_wlinear_svd.c
Description: gsl_wlinear_svd.c