牧岩 发表于 2010-6-2 16:03 
本人最近正在做“基于有吸收状态的马尔可夫链的银行贷款迁移分析”,不知道SAS有没有哪个proc可以实现。还是必须依靠Matlab进行?
I am not sure what is "银行贷款迁移分析".
But 马尔可夫链 is a better math tool to model a portfolio performance over time. It is better than survival based analysis in a sense it provides a micro data generating process. It also needs more details about data.
I believe SAS does not have any procedures to handle the problem I describe above. However, you always can DO it with SAS proc nlmixed if you know how to write the problem into a likelihood function and maximized/minimized it.