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st: Constraints in ML


From   Katia Bobulova <katia.bobulova@googlemail.com>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: Constraints in ML
Date   Sat, 9 Jun 2012 11:10:49 +0200

Dear All,

I would like to perform a LR test for two nested model derived with a ML.

I know how to impose the restiction that two parameters are equal, like:

constrain 1 [a]_cons=[b]_cons

The poblem is that I derived two parameters, on which I wanto to
impose the restriction, with a deltha method.

How to do in this case?

Maybe should I use local?

Could you please help me?

Thank you,
Katia
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