From octave-sources-request at bevo dot che dot wisc dot edu Mon Nov 26 10:50:38 2001
Subject: Re: Levenberg-Marquardt algorithm
From: Francesco Potorti` <pot at gnu dot org>
To: Paul Kienzle <pkienzle at users dot sourceforge dot net>
CC: octave-sources at bevo dot che dot wisc dot edu,        Matthias Jueschke <matthias@physik3.gwdg.de>
Date: Mon, 26 Nov 2001 17:50:25 +0100

   > I have this: <ftp://fly.cnuce.cnr.it/ftp/pub/software/octave/leasqr/>.

   I asked all the authors, and it is now under the GPL.  I've included it in
   octave-forge  (http://octave.sf.net).

Thanks, Paul!  

I wanted to remove then my version form my ftp server and replace it
with a pointer to octave.sf.net, but I can't find it there.  Can you
provide a less generic pointer?
   
   I see that NIST has some data sets for non-linear regression with expected
   results (http://www.itl.nist.gov/div898/strd/nls/nls_main.shtml).  You can use
   these to check both versions, and if both are correct we should use the one
   which is faster.

I do not currently have the interest to test these versions, but as far
as I understand, the problem is not only correctness, but robustness and
similar things.  If the dataset is well chosen, however, those things
should come up by themselves.