研究目标:探索全要素生产率异质性对成本函数模型估计的影响。研究方法:简要归纳出各类成本函数族和基于半参数法的生产函数改良思路,将以往用于生产函数估计的Olley-Pakes(OP法)运用到成本函数估计中,构建了一个基于半参数估计的成本函数计量模型。研究发现:通过与最小二乘法、固定效应、随机前沿的回归结果对比发现,OP法用于估计成本函数能够在一定程度上控制同步性问题以及样本选择偏差问题,并能测算与分解企业间异质的全要素生产率。研究创新:通过改良成本函数估计方法以控制全要素生产率的异质性和同步性问题。研究价值:对该方法论的探讨有助于成本函数在经济统计、计量经济模型估计、政策效应评估等领域的推广与改良。
Research Objectives: Exploring the impact of heterogeneity of total factor productivity on the estimation of cost function model. Research Methods: This article briefly reviews these ordinary-used technologies of cost function and the improvement path of the semi-parametric method of production function. The OP method in production function is introduced into cost function, which establishes a new framework for cost function in view of semi-parametric method. Research Findings: OP method can solve the simultaneity and selection bias on estimating cost function when comparing with OLS, FE and SFA method. Furthermore, this method can be used to measure and decompose the productivity. Research Innovations: Reforming the estimation of cost function to control the heterogeneity of total factor productivity and the simultaneity. Research Value: The method is beneficial to be introduced to the economic statistics, model estimation, and policy effect assessment and improved applicably.