Thank you for your suggestion. I tried it. This time, even the estimation that had found a rho=1 (but had produced results) declares that " flat log likelihood encountered, cannot find uphill direction". It seems there must be something else...
Paula
--- On Thu, 12/3/09, Paula Albuquerque <[email protected]> wrote:
> I find no negative weights and I don't think there are
> any exceptionally large ones.
I usually get a bit suspicious with weights larger than 3, especially since you have quite a small sample sze for a rather complicated model like -movestay-. To see if this is the problem you could try something like this:
gen junkweight = min(multipli, 3)
movestay ... [pw=junkweight], ...
If this does converge, than you know at least what the problem is.
-- Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://home.fsw.vu.nl/m.buis/
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