Hello,
I am trying to estimate a choice model with varying choice set for each individual. I would like to fit different kinds of model (logit ,nested logit, probit...). So far I have found that package *mnp* allows me to estimate a probit model with varying choice set. But for estimation of a logit model, I have only found function *multinom* of package *nnet* which does not seem to allow for varying choice set. I could incorporate indicators of choice availability as explanotary variables, but it does not seem a very good way to do it. Instead, for a logit model, I have coded a likelihood computation of the underlying model with varying choice set and I use optim function to get the "maximum". I wondered if there were more user friendly functions available and/or other choice model related package. Thanks, Julien ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html