基于实证分析的VES和二级CES生产函数对比研究

A comparative study of VES and two stage CES production functions based on empirical analysis

为了选择更符合实际的生产函数模型,对VES生产函数与二级三要素CES生产函数进行数理分析与实证研究。结果表明,如果需要研究多个生产要素对产出的影响,二级三要素CES生产函数更优;VES生产函数的参数估计相对简便,但二者参数估计的方法没有本质区别;VES生产函数的替代弹性可变,二级三要素CES生产函数的替代弹性不可变;各要素的生产弹性不是固定值,受到多个投入要素的影响。

In order to choose a more realistic production function model, the paper analysis and research VES production function and the three elements of the secondary CES production function.If you need to study the impact of multiple factors of production to output,the three elements of the secondary CES production function is better.VES production function parameter estimates is relatively simple,but the methods of parameter estimation of two production function is no essential difference.The elasticity of substitution of VES production function is variable and the elasticity of substitution of the three elements of the secondary CES production function is not variable.The elasticity of production of every element is not fixed value and is affected by a number of input factors.