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Re: st: RE: Positivity


From   "Teresa Linz" <tlinz@uni-bonn.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Positivity
Date   Tue, 29 Jul 2008 20:45:03 +0200

Yes that is exactly what I mean. I have heard that this reparamrisation is quite complicated in Stata, is that right? How can I do it in detail?
Thank you for your answer so far

Teresa



On Tue, 29 Jul 2008 18:49:32 +0100
"Nick Cox" <n.j.cox@durham.ac.uk> wrote:

If you mean: How can I ensure that I get positive estimates for
coefficients I expect to be positive, the answer is to reparametrise in
terms of logarithms.
Otherwise, please expand on this question.

Nick
n.j.cox@durham.ac.uk
Teresa Linz

And I have another question; does anybody know how I could programme positivity for some coefficients in Stata?

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