The Intercountry Agricultural Production Function: Another View
利用58个国家的重复观测数据，假设各国使用相同技术，通过变系数统计模型估计农业要素生产率，方法结合主成分分析和多重比较。
Abstract Factor productivity in agriculture is estimated from repeated observations on a sample of fifty‐eight countries under the assumption that all countries have access to the same technology. Technology is viewed as a collection of techniques; each technique is represented by a production function. The choice of the implemented techniques is determined by the state variables, which represent the physical and economic environment within which the firms operate. The statistical model is that of varying coefficients, and it is estimated by a method which utilizes principal components and multiple comparisons.