Good morning dear ROOT experts,
I am actually doing many fits, using defaut settings of ROOT fitter ( Minuit as library and MIGRAD as minimizer) and I would like to save time during these fits.
Do you have an idea of a faster minimization algorithm/ chi2 conputation?
Thank you by advance for your help
You will have to tell something more about your function:
- Is it linear in the fit parameter, if so you are better off doing some linear
- Are you calculating the derivatives of the fit function wrt the fitting
parameters numerically, if so supplying an analytical expression
can make a significant difference
Thank you for these informations, I will try to make these changes in my fit.