[Limdep Nlogit List] errors about mixed logit
W.Jiang at tue.nl
Sat Mar 26 05:09:02 AEDT 2016
Hi everyone, i have a question that when i am doing mixed legit model, i cannot get the result from coding:
The results show that: Error 803: Hessian is not positive definite at start values.
Error 1027: Models - estimated variance matrix of estimates is singular
Because i used revealed preferences data rather than having experimental design, so i don't have utility for both choices, only for one. But i do have a binary choice in the end. is there any suggestions about the error? thank you!
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