基于曲率为结构权重的对基尼系数几何算法的改进

The Improvement of Geometric Algorithms of Gini Coefficient Based on Taking Curvature as Structural Weight

本文在原始基尼系数几何算法的基础上,考虑结构这一重要因素,以洛伦兹曲线的平均曲率作为面积的权重,计算得出较为合理的、更加全面的基尼系数的数值,并以2009年我国城镇和农村实际收入状况为例,通过曲率的相应变化特点,分析结构因素对我国收入分配差距的影响及其原因。

The paper basing on geometric algorithms of the original Gini coefiicient, considering the important factor of the structure, and taking the average curvature of the Lorenz Curve as the weight of area, calculates the more reasonable and more comprehensive value of the Gini coefficient and takes real urban and rural income status in 2009 of China as an example, through corresponding changing characteristics of curvature, analyses the influences of structural factors on China＇s income gap and their causes.