中国中部六省预期寿命时序加密估算研究

李畅, 王安丽, 龚胜生, 孙攸宁

Time-series estimation of provincial life expectancy in China: A case study of six provinces in central China

LI Chang, WANG Anli, GONG Shengsheng, SUN Youning

图2 拉格朗日插值中年份及对应年龄分组人口比例示意图

Fig. 2 Proportions estimation of population by age group based on Lagrange interpolation for unknown years