Re: [Help-gsl] non-linear least square fitting

[Jerome BENOIT]

Hello,

On 18/08/18 15:14, Brijesh Upadhaya wrote:
> Hi,
> 
> I am new to GSL and I want to use non-linear least-square fitting to fit a
> data set with 2000 data points. The function has 14 parameters in total. I
> tried using gsl_multifit_nlinear_driver () to solve the problem.
> 
> It works nice but I want the parameters to be in certain range: x_min <=
> xpar <= x_max. How to fix the lower and upper bounds (Or I missed something
> in the gsl-2.5 documentation!). Some of the parameters in my model don't
> have any physical meaning if not bounded.
> 
Have you considered a change of parameter (variable) ?


> I have another question as well!. I want to do a multi-objective
> optimization using GSL-2.5 but I couldn't locate any routine in the
> documentation. I have 40 data set having 2000 points each and I need to
> obtain 14 parameters (Global minimum).
> 

simulated annealing
multidimensional minimization


> with kind regards,
> Brijesh
> 

Jerome