xuewen_l95 发表于 2010-1-13 21:58 
如题,请教各位朋友,我在看计量经济分析的时候,感觉随机系数模型和似无关模型有一点相似,又有些区别,但是理解的不是很清楚,哪位能清楚的解决下我的疑惑,非常感谢!
随机系数模型 needs panel data to decompose covariance of coeficiets. It is the same as a random effect model in statistics.
似无关模型 may not need panel data. For example, It considers correlation strusture among simultaneous equations.