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st: AW: clogit, "initial values not feasible" error
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" In searching through precedent posts on the topic, i found a
reference to a possibility to feed results from an OLS estimation into
a clogit estimation. How can one do this? do you think it would help?"
Post the link to the post in question as a first step!
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von joachim jarreau
Gesendet: Mittwoch, 16. Dezember 2009 14:26
An: [email protected]
Betreff: st: clogit, "initial values not feasible" error
Hi statalist,
I am trying to fit a conditional logit model on some 160,000 obs.;
there are about 150 groups spanning 11 years. In the specification Id
want to include 3 additional sets of fixed effects; so that the
command line is of the type :
clogit export x1 x2 x3 provd* secd* yeard*, group(country)
where "export" is a binomial variable for positive exports in a given
sector and year, from a province to a given country. "provd", "secd"
and "yeard" are corresponding sets of dummies.
I get "initial values not feasible" (r1400) as error message.
Ive got two questions:
- What is the critical aspect that makes this specification to heavy
to implement/prevents convergence? what should I cut? Do you think
there are too many observations, too many dummy variables, or both?
(Im am trying these alternative solutions, but any indication
concerning a preferred direction to search would be helpful).
- In searching through precedent posts on the topic, i found a
reference to a possibility to feed results from an OLS estimation into
a clogit estimation. How can one do this? do you think it would help?
Thank you in advance for any advice.
Cheers,
joachim
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