基尼系数估算的两种方法  

Two kinds of Methods of Gini Coefficient Estimation

作　　者：牛晓奇[1] 原新生[1] 

机构地区：[1]安阳师范学院数学与统计学院,河南安阳455000

出　　处：《河南科技大学学报（自然科学版）》2010年第6期95-99,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省自然科学基金项目(0511013800)

摘　　要：采用定积分近似计算原理与最小二乘原理,推导基尼系数估算的两种方法:抛物线估算法和拟合曲线法。从数形两个方面分析了基尼系数估算依据的基本原则,提高了估算的精确度。With the help of approximate calculation of definite integral as well as least square theory,this paper deduces two kinds of methods to estimate Gini coefficient:the parabola method and curve fitting method.The basic principles for Gini coefficient estimation are analyzed from the perspectives of quantities and spatial forms,and the accuracy of estimation is improved.

关 键 词：基尼系数 洛伦兹曲线 抛物线 曲线拟合 

分 类 号：O242.2[理学—计算数学]