search for: is_avali

...reference, I would like to post here that I found the answer. > Apparently it is not possible if one uses mlogit.data with shape = > ?wide?, but it is if one uses it with shape = ?long? . > So basically one can create an alternative specific variable with > availability (let?s call it is_avaliable) and use mlogit.data normally > that is : > all_avaliable <- mlogit.data(df , shape = ?wide? , ?) > then one can subset it > real_avaliability <- all_avaliable[all_avaliable$is_avaliable ,] > and resend it through mlogit.data with format long > mlogit.data(real_avaliab...

Hi Jose, You're referring to your response variable when you're saying it's missing some of the choices, right? Are your response choices ever known or do they just occur with extremely low frequency? Either way, I think the mlogit package would be inappropriate for you. I imagine you would have much better luck using MCMCpack or writing a model with rstan or something Bayesian.