[Limdep Nlogit List] LimDep vs NLOGIT support?
Kandice L. Kleiber
kleiberk at onid.orst.edu
Tue Apr 7 06:36:30 EST 2009
Hi Everyone -
I'm confused as to what LimDep 9.0 (not including NLOGIT) will support. I'm
attempting to do sequential estimation of a nested logit model and I have
two different methods of coding, and I'm not sure if LimDep will support one
of them - I found the coding in the NLOGIT 3.0 manual, but I do not have
NLOGIT available. Can someone please clarify??
My model looks like:
tree = land[corn(cc, sc, wc, oc), soy, wheat] where cc, sc, wc, oc are 0-1
variables (where previous land came from) and corn, soy, and wheat are
proportion data.
*
Will LimDep 9.0 support this: ?* *Or ... please see below this coding ... *
nlogit;
choices = cc, sc, wc, oc, soy, wheat;
ivb = incl0;
tree = land[corn(cc, sc, wc, oc), soy, wheat];
model: U(cc) = bcc + bpr41*pr41+bind1*ind1 ... /
U(sc) = bsc +.../
U(wc) = bwc +... /
U(oc) = bpr44*pr44+ ... /
U(corn) = ac+ ... /
U(soy) = as+ ... /
U(wheat) = aed3*ed3 + ....;
ivb = incl;
conditional$
*I have tried to estimate [corn(cc, sc, wc, oc)] and save the inclusive
values. I've tried just the basic multinomial logit model ... and in
setting up the second level to include the inclusive values, I need to
restrict the parameter on the inclusive values = 1, and only have the
inclusive value go into the parameter estimation for corn. I'm not sure how
to incorporate this into my coding either. *
First step:
nlogit;
lhs = prop;
choices = cc, sc, wc, oc;
rhs = one, pr41, pr42, pr43, ind1, ind2, ind3, ... ;
ivb = incl0$
Second step:
nlogit;
lhs = corn, soy, wheat;
choices = corn, soy, wheat;
rhs = one, age1, age2, ... incl0 $
*Thank you for your help!
Kandice
*
More information about the Limdep
mailing list