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st: AW: Heckman multinomial logit model

From   "Martin Weiss" <[email protected]>
To   <[email protected]>
Subject   st: AW: Heckman multinomial logit model
Date   Wed, 16 Sep 2009 11:26:46 +0200


Look at 

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-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von "Elisabeth
Gesendet: Mittwoch, 16. September 2009 11:27
An: [email protected]
Betreff: st: Heckman multinomial logit model

I would like to do an extension of Heckman.

First, I have a multinomial logit model of the form:
Yi=Zi g+ui
where Yi= 0,1 or 2 (selection equation).

Second, I have a general equation of the form
Wj=Xj b+vj (regression equation).

1) How can I get maximum likelihood estimates from the selection equation?
2) Howcan I create Mills ratio from these estimates?
3) How can I do the regression equation with the Mills ratio?

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