Note on the Decomposition of Gini Inequality
提出一种使用Lerman-Yitzhaki协方差方法将基尼系数分解为组内和组间不平等的方法，与Silber（1989）的方法不同，在排序和交互项处理上有差异。
The purpose of this note is to propose a decomposition of the Gini index of inequality into within and between subpopulations using the Lerman-Yitzhaki covariance method. The present method suggests that once the population is arranged in ascending order of income and assigned ranks, the same ranks will be used to calculate total as well as between inequality. In this way, it differs from the one suggested by Jacques Silber (1989) in the measurement of between inequality and, thereby, in the interaction term. Copyright 1994 by MIT Press.