悬赏5000论坛币求高手帮助

楼主舍得血本，帖子得顶起来！！！

呵呵，爱莫能助

hehe----还是找老师

望币兴叹！！！

楼主真慷慨，可惜不会呀

如果是程序上面的事，楼主不妨找工科的人试试？

对论坛币没有兴趣,你没有看见我已经很多了,我懒得为论坛币花费自己的时间哦

这问题上迅雷嗖嗖吧

好多钱啊~~~

I looked probabilty function it seemed to me you modeled the problem as a multinomial logit model(discrete choice model). If this is the case, I think a routine in SAS (proc mdc) deals with the problem. But it has limitations for this model to study cross effects(elisticities). But it seems to me the proper model would be a nested logit model according to your document -- which is also available in SAS (proc mdc). Please post if you need an additional help.