multidimenstional minimization without df.

Toan T Nguyen toan.nguyen@physics.gatech.edu
Tue Jan 22 17:26:00 GMT 2008


Hi,

I'd like to locate the minimum point of a function f(x_i) of n variables 
x_i. It's very non trivial to calculate the df/dx_i. Can I use conjugate 
gradian method without this df(x_i) information ?

This page in the manual 
http://www.gnu.org/software/gsl/manual/html_node/Multimin-Algorithms.html

doesn't list gsl_multimin_fminimizer_conjugate_fr as a type of 
minimizer. It has
	gsl_multimin_fdfminimizer_conjugate_fr
but no
	gsl_multimin_fminimizer_conjugate_fr

Any help would be appreciated.

Thanks,
Toan



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