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st: Maximum sizes Nested Logit


From   <R.Alegria@lse.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Maximum sizes Nested Logit
Date   Wed, 16 Aug 2006 10:06:41 +0100

Hi,

I am trying to estimate a nested logit model with the following
characteristics:

-	Location choice firm in 25 countries (upper level) and 246
regions belonging to those countries (lower level)
-	I have 6,475 location choices.
-	Explanatory variables are economic country and region
characteristics.

The estimation does not work. It recognizes the nested structure but
after that the computer seem to run the model but not results appear,
even no iterations.

I was wondering whether there is a maximum size restriction in the
number of alternatives, nests or observations to estimate a nested logit
with Stata.

Any help will be gratefully accepted!

Thanks,

Rodrigo Alegria
r.alegria@lse.ac.uk



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