谢谢，还有个类似的问题。
我用cmp命令，第一个方程是tobit ，第2个方程是probit，系统估计。出现这个怎么回事？谢谢


Warning: regressor matrix for u25 equation appears ill-conditioned. (Condition number = 24.627319.)
This might prevent convergence. If it does, and if you have not done so already, you may need to remove nearly
collinear regressors to achieve convergence. Or you may need to add a nrtolerance(#) or nonrtolerance option to the command line.
See cmp tips for more information.

Fitting constants-only model for LR test of overall model fit.

Fitting full model.
convergence not achieved

楼主,你好!我也在研究关于SUR的问题,一直不知道如何使用软件进行似不相关回归,楼主能否详细的说下具体步骤,万分感激