Hi All, I know someone has posted similar messages before, but there is no reply. So I wonder whether there is a way to run a nested logit model in R. It is in the GEV family; however, the commands fitting GEV don't seem to work for nested logit. Or maybe I have to write down the log-liklihood function and let R maximize it? Thank you! Best wishes. Min -- Min Chen Graduate Student Department of Agricultural, Food, and Resource Economics 208 Cook Hall Michigan State University chenmin5@msu.edu / chenmin0905@gmail.com [[alternative HTML version deleted]]