Re: [Gretl-users] Heckit estimator
On Mon, 6 Feb 2006, Riccardo Jack Lucchetti wrote:
Attached you will find a zip file which shows you how to estimate
a linear model with endogenous sample selection by using Heckman's
two-step estimator (the so-called "Heckit" estimator). I thought
I'd share it with you guys also because it makes for a nice
showcase of the new features, especially matrices.
Nice work, Jack! I think this contribution emphasizes the point
that gretl now (in CVS at any rate, and a new release shouldn't be
too long in coming) supports quite sophisticated scripting.
For the forthcoming gretl 1.5.1 we're concentrating on bug fixes and
getting the new lag selection mechanism right (though there's also
lots of new material in the code base). For the release after that
I have in mind a GUI mechanism for downloading, inspecting and
loading for use, the sort of script that Jack has written. I hope
that this will also create a greater opportunity for people to
contribute econometric routines to gretl -- not as C code (though
of course that is always welcome) but as gretl script.
Allin Cottrell