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st: Heckprob and Maximum likelihood algorithm


From   Rachel <academicgirl@gmail.com>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: Heckprob and Maximum likelihood algorithm
Date   Tue, 28 Nov 2006 10:53:32 -0500

Does Heckprob supply the maximum likelihood estimator with the
appropriate gradient and Hessian, or does Stata compute them
numerically?  I looked at the ado file but, as a casual Stata user,
could not determine which is the case.

Thanks,
Rachel
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