--- Linna <[email protected]> wrote:
> I am using -fmlogit- to fit a fractional multinomial logit model for
> panel data.
-fmlogit- is not designed to take the panel structure of you data into
account.
> It works great if not considering the "case-specific" independent
> variable "Price1-3". Now I want to add "Price" to the model. -mlogit-
> can fit constrained models (with subsets of coefficients constrained
> to be zero) by specifying the constraint() option. But it seems
> -fmlogit- does not support the constraint() option.
-fmlogit- does allow the -constraint()- option, see the example below:
*----------------------- begin example --------------------------
use http://fmwww.bc.edu/repec/bocode/c/citybudget.dta, clear
constraint 1 [eta_education]minorityleft=0
fmlogit gov safety education recreation social urbanplanning, ///
eta(minorityleft noleft) constraint(1)
*------------------------ end example ---------------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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