gsl_multimin question

[Rajarshi Guha]

On Tue, 2003-06-03 at 13:13, Fabrice Rossi wrote:
> Hi.
> 
> Could you show the code? Are you sure the derivatives are correct? 

I dont have the actual code that was giving the problem, but I modified
the example program given in the manual to use a function similar to the
one in my original code. The same error occurs.

I've attached the C program - essentially I'm trying to minimize a sum
of squares error function. In the attached code the form is

E = sqrt( \sum x_{i} - X_{i} )

where X_{i} is my target value (observed value).

I've selected the initial argument vector randomly, but the values are
close to the target vector. I expected that the values printed in each
iteration should converge to my target vector - but they dont and after
a few iterations all I see is NaN's.

As far as I can see the derivatives are properly defined. Since you
mentioned thgat your collegue gets it to work I must be doing something
wrong somewhere but I cant see it :(

Any pointers would be appreciated.
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Rajarshi Guha <rajarshi@presidency.com> <http://jijo.cjb.net>
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