Dear Professor Birelaire,
Hope this post finds you well.
I'm a beginner of biogeme and I'm working on a latent class model with the reference to the "15panelDiscrete" example. I was wondering why we should set B_TIME_RND = 0?
More specifically, my current understanding is that only by normalizing one of the parameters of one of the classes to zero could the classes be deffientiated from each other, am I on the right track? If so, how should I interprete the results of B_TIME? (Since intuitively both classes should have some sentivity to travel time. )
Moreover, should we always set one of the classes of one of the latent paramters to zero? And if so, is there any criteria to select which parameter to be fixed? For example in "15panelDiscrete", why we set B_TIME_RND = 0 instead of ASC_CAR_RND = 0 ?
Sorry to bother you with these beginner questions. I would be very grateful if you can give some advise.