本文研究了线性回归模型中.回归系数的混合估计与最小二乘估计的相对效率.利用矩阵的相关性质和运算.导出了两者之间两种新的相对效率的上下界.
In this oaoer, we study relative efficiency of mixed estimator with respect to least square estimator for regression coefficients. The lower and upper bounds of two new relative efficiencies are obtained by using the quality of matrix.