Re: [ROOT] TMinuit with constraints

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Hi Matthieu,

TMinuit does not support directly this kind of minimisation constraint.
You have to build your FCN the "hard" way.

Rene Brun

Matthieu Guillo wrote:
> 
> Hello Rooters,
> 
> How can I impose some constraints on parameters in TMinuit? I want to
> minimize a chi square and the parameters are weight so that their sum
> should be equal to 1. The "hard" way is of course to change the function
> using Lagrange multipliers to get ride of the constraint but I was
> wondering if TMinuit had a method to handle that the lazy way.
> 
> Thanks
> 
> Matthieu Guillo
> University of South Carolina
> Thomas Jefferson National Laboratory
> Office 71 trailer 16
> Phone: 757-269-5551

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