| 基于伽马模型的中等收入定位与人口度量模型研究 |
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| 引用本文： | 徐思军,张晓敏,商金耀,王立洪.基于伽马模型的中等收入定位与人口度量模型研究[J].宁波大学学报(理工版),2015,0(3):53-56. |
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| 作者姓名： | 徐思军 张晓敏 商金耀 王立洪 |
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| 作者单位： | (宁波大学 理学院, 浙江 宁波 315211) |
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| 基金项目： | 国家自然科学基金，宁波大学研究生专业选修课程建设项目 |
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| 摘 要： | 主要运用Gamma分布模型刻画收入分配结构及描述洛伦兹曲线, 较好地反映了社会收入分配的公平程度. 利用随机模拟和最大似然方法求得Gamma分布的参数估计, 同时对收入空间法和人口空间法进行了改进, 并将改进的方法对实际数据进行处理, 得到了针对每组数据的中等收入区间.
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| 关 键 词： | 洛伦兹曲线 Gamma分布 随机模拟 最大似然估计 |
Middle-income Positioning and Population Metrics Based on Gamma Model |
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| XU Si-jun,ZHANG Xiao-min,SHANG Jin-yao,WANG Li-hong.Middle-income Positioning and Population Metrics Based on Gamma Model[J].Journal of Ningbo University(Natural Science and Engineering Edition),2015,0(3):53-56. |
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| Authors: | XU Si-jun ZHANG Xiao-min SHANG Jin-yao WANG Li-hong |
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| Institution: | ( Faculty of Science, Ningbo University, Ningbo 315211, China ) |
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| Abstract: | In this paper, the Gamma distribution model is mainly used to characterize the income distribution structure and describe the Lorenz curve, which well reflects the fairness of the distribution of social income. The stochastic simulation and maximum likelihood estimation method are utilized to obtain Gamma distribution, and to improve both the income space method and the population space method. The presented methods are applied to process the real data and the middle-income range is obtained in accordance with each data group. |
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| Keywords: | Lorenz curve Gamma distribution stochastic simulation maximum likelihood estimation |
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