[Limdep Nlogit List] Exit Optimization without Status Code

[Lixian Qian]

Hello, we are running a mixed logit using NLogit.
The model runs well with coefficients with normal distributions (status =0), but if we change the distribution of monetary attributes to lognormal, the estimation ends with this statement.
"Line search at iteration   46 does not improve fn. Exiting optimization."

Can anyone please explain the issue? Thank you.


Best,
Lixian