<p>请教达人什么是“incidental parameter problem”---偶发参数问题?怎么造成的?只是看到说在面板模型中:y(it)=a(i)+x(it)b+e(it), a(i) are incidental parameters. Incidental Parameter causes inconsistent MLE which in general is corrected by GLS/GMM/Quasi-MLE,etc. 如何得到解决的?</p><p>在此先谢过了,欢迎大家讨论!</p>