Nonparametric and Semiparametric Estimation: An Analysis of Multiproduct Returns to Scale
回顾了基于核密度估计的非参数和半参数回归模型，并将其应用于多产出成本函数分析奶牛场的规模回报，开发了常数规模回报和生产同质性的半参数检验，结果显示这两个假设均被拒绝，且样本奶牛场具有显著的规模经济。
Abstract The nonparametric and semiparametric regression models based on kernel density estimation are reviewed, and they are applied to the analysis of returns to scale in dairy farms using a multioutput cost function. Semiparametric tests of constant returns to scale and homogeneity of production are developed, and their implementation show that both of these hypotheses are rejected. Kernel estimation of the local degree of multiproduct returns to scale confirms that the sample's dairy farms are characterized by a considerable degree of scale economies.