同时删除观测值和自变量时方差加权模型的性质

摘要

基于方差加权模型，讨论了同时删除设计矩阵第i个观测值和第j个自变量时方差加权模型的部分性质．即给出了同时删除设计矩阵第i行和第j列前后方差加权模型的拟合值关系、残差平方和关系和似然比检验．%Based on the case - weighted model, a part of the nature of the case - weighted model were discussed when the ith observation and the jth independent variable of the design matrix simultaneous mitted. That is given the relationships of the fitted values, the residual sum of squares and the likelihood ratio test of the case - weighted model before and after the ith row and the jth column of the design matrix simultaneous mitted.