I would like to know how do you determine the performance of your models. That is, if you fit a multinomial logit or probit model for un-ordered discrete choice. What do you use to evaluate whether you have a good model?
Please provide me with any reference material that I could read more on this topic. Websites, articles or book references on this topic will be a great help. I am kind of stuck!
I have R, SAS, Stata, SPSS, and Minitab available.