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| From: | mezger |
| Subject: | [Bug-gsl] [bug #27958] bug in gsl_multifit_wlinear_svd when reducing rank |
| Date: | Fri, 06 Nov 2009 13:11:51 +0000 |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.0.15) Gecko/2009101601 Firefox/3.0.15 (.NET CLR 3.5.30729) |
URL:
<http://savannah.gnu.org/bugs/?27958>
Summary: bug in gsl_multifit_wlinear_svd when reducing rank
Project: GNU Scientific Library
Submitted by: mezger
Submitted on: Fr 06 Nov 2009 13:11:50 GMT
Category: None
Severity: 3 - Normal
Operating System: sl5
Status: None
Assigned to: None
Open/Closed: Open
Release: 1.9.3
Discussion Lock: Any
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Details:
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 ?
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?27958>
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