Hi again!
I identified the mistake! So, just change the order from
nlogit chosen distance rating cost || lev1: kids || lev2: income || restaurant:, noconstant case(family_id) constraint(1 2)
to
nlogit chosen distance rating cost || lev2: income || lev1: kids || restaurant:, noconstant case(family_id) constraint(1 2)
then it works perfectly fine.
Thats it...
Stephan
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Dear all,
since the nested logit gets a bit easier in data handling, we are triing the following. (Hopefully, now I make all right in posting ?)
webuse restaurant, clear
nlogitgen lev1=restaurant(R1: 1 2, R2: 3 4 5, R3: 6 7)
nlogitgen lev2=lev1(N1: R1 R2, N2: R3)
nlogittree restaurant lev1 lev2, choice(chosen)
constraint 1 [N2_tau]_cons=1
constraint 2[R3_tau]_cons=1
We probably face the problem of a degenerate nest. However, we still get the error message:
"at least one alternative of vkms is contained in muliple alternatives of profiles; this is not allowed"
and do not know how to deal with it.
Do you have some advice?
Thank you very much in advance,
Stephan
---
Stephan Brunow
MSc. in Economics und Diplom-Verkehrswirtschaftler
Professur fr VWL, insb. Makrokonomik und Raumwirtschaftslehre/Regionalwissenschaften
Institut fr Wirtschaft und Verkehr
Fakultt fr Verkehrswissenschaften Friedrich List"
Technische Universitt Dresden
D-01062 Dresden
http://tu-dresden.de/regionalscience
Phone: ++49-(0)351-463-36806
Fax: ++49-(0)351-463-36819
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