摘要
收入分配是国内大循环的关键环节,同时也是实现共同富裕的必要路径,因此扩大中等收入群体对我国现阶段社会经济发展具有重要的价值和意义。文章基于参数分布(对数正态分布、Pareto分布)和非参数分布(众数回归提升树模型)对M-曲线积分,并构造和揭示相关指数。该指数克服了选择何种中等收入界限的问题,能够更加客观地对相应地区的中等收入人口规模状况进行纵向对比。将该指数应用于中国城镇居民收入数据进行实证研究,发现城镇居民2014—2020年的中等收入人口规模变化趋势平稳,由于新冠肺炎疫情的影响,收入分布的位置先右移再左移,但总体城镇居民收入显著提高。
Income distribution plays a crucial role in the domestic economic cycle and is also an essential pathway to achieve common affluence.Therefore,the expansion of middle-income groups is of great value and significance to China's social and economic development at the present stage.This paper employs parametric distributions(log-normal distribution,Pareto distribution)and non-parametric distribution(mode regression lifting tree model)through M-curve integration to construct and reveal relevant indices.The proposed index addresses the challenge of determining the middle-income threshold while enabling more objective longitudinal comparisons of the size of the middle-income population across corresponding regions.The paper applies this index to empirical analysis of urban residents’income data in China and finds that from 2014 to 2020,there has been a stable trend in the size of the middle-income population,and that despite shifts caused by COVID-19 epidemics leading to rightward and then leftward movements in income distribution positioning,overall urban residents’income has increased significantly.
作者
王艳明
徐兴
李心怡
Wang Yanming;Xu Xing;Li Xinyi(School of Statistics,Shandong Technology and Business University,Yantai Shandong 264005,China)
出处
《统计与决策》
CSSCI
北大核心
2023年第23期46-50,共5页
Statistics & Decision
基金
国家社会科学基金重点项目(21ATJ006)
山东省社会科学规划研究项目(21BTJJ02)。
关键词
中等收入人口规模
综合指数
收入分布
众数回归提升树
M-曲线
middle-income population size
composite index
income distribution
mode regression lifting tree
M-curves
作者简介
王艳明(1964—),女,山东荣成人,博士,教授,研究方向:经济社会统计;徐兴(1999—),男,安徽合肥人,硕士研究生,研究方向:经济社会统计;李心怡(1999—),女,山东青岛人,硕士研究生,研究方向:大数据分析。
