[R] sum_to_zero_constraints

[Uwe Ligges]

Iason Christodoulou wrote:
> 
> 
> 
> 
> 
> Dear kind R-experts.
> with miximum likelihood method i found the following estimations for my parameters
> 
> vector:
> mu
> H
> A1
> A2
> .
> .
> .
> A10
> D1
> D2
> .
> .
> .
> D10
> 
> but i want to add sum to zero constraints. sum(a1:a10)=0 and sum(d1:d10)=0
> how i will do this?

Don't estimate a10 but rewrite it as a10 = 1 - a1 - a2 - ....

Uwe Ligges



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