[Help-gsl] simplex algorithm for multimin: gsl_multimin_fminimizer_size returns nan

Hi, I'm using the simplex algorithm in an optimization problem, and the program prints the status after each iteration. For some reason the gsl_multimin_fminimizer_size returns nan. Does anyone know what might cause this? How should I debug this? Thanks! -Yong __

Re: [Help-gsl] Comments/questions about BFGS algorithm implemented for the GSL

Hello, Just to let you know, I have added an implementation of the Fletcher BFGS algorithm to the GSL CVS repository at http://sourceware.org/gsl/devel.html - it gets the number of function and gradient evaluations on the test problem down to (60,44) compared with (56,50) in his book. Thanks for

Re: [Help-gsl] Comments/questions about BFGS algorithm implemented for the GSL

On 2007-02-08 20:20- Brian Gough wrote: Hello, Just to let you know, I have added an implementation of the Fletcher BFGS algorithm to the GSL CVS repository at http://sourceware.org/gsl/devel.html - it gets the number of function and gradient evaluations on the test problem down to (60,44)