摘要
采用定积分近似计算的方法和函数逼近中插值逼近方法,详细论述了基尼系数估算中选择抛物线法的依据,并系统、严格地推导出两种估算基尼系数的抛物线公式,与传统方法比较,提高了估算基尼系数的精确度.
With the help of approximate calculation of definite integral and approximation of function by interpolation, this essay discusses in detail the reason for choosing Parabola Method and deducts the two formulas to estimate Gini Coefficient in a systematic and strict way. Compared with traditional methods, the new way, proposed by this essay will promote the accuracy in estimation of Gini Coefficient.
出处
《数学的实践与认识》
CSCD
北大核心
2011年第7期147-155,共9页
Mathematics in Practice and Theory
基金
河南省自然科学基金项目(0511013800)
关键词
基尼系数
洛伦兹曲线
插值逼近
抛物线
gini coefficient
lorenz curve
the interpolation approaches
parabola
