聚集数据线性模型的参数估计问题

Estimate of the Parameters in the Linear Model with Aggregated Data

在X列降秩条件下给出Xβ的两种估计 ,并研究它们之间的关系 ,取消了一般情形下关于X列满秩的假设 .

Under condition that the matrion X may be deficient,two estimators of Xβ are given,the connection between these estimators is studied,and the usual hypothesis that X should be undificient is cancelled.