[AstroPy] Q re. function minimization

Wolfgang Kerzendorf wkerzendorf at googlemail.com
Thu Jun 2 00:13:22 EDT 2011

I can recommend pyminuit that was mentioned by Neil. I don't even find 
it flaky and you can fix parameters and do three different types of 

On 1/06/11 12:26 AM, Ian Crossfield wrote:
> What functions or wrappers do people use for minimizing a function in
> multidimensional parameter space?  I have some experience with the
> scipy.optimize subfunctions but I've never been entirely happy with
> them; there also appear to be options in sage and a Python MPFIT.  What
> I'd like is a method that lets one minimize a function but also allows
> things like passed keyword arguments (unsupported in scipy.optimize) and
> above all a way to minimize while holding specified parameters fixed --
> so that one can minimize over all parameters, and then repeat with some
> parameters held constant without having to write an entirely new
> function for each peculiar set of parameters.
> Is anything that offers these features this out there?  How do people
> deal with this?
> Thanks,

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