Modelling Technical Efficiency in Cross Sectionally Dependent Stochastic Frontier Panels
提出一个结合因子方法和内生阈值效率机制选择的统一框架，灵活处理随机前沿模型中的时间和截面相依性，并用26个OECD国家1970-2010年的数据验证了技术邻近性对效率的正向溢出效应，还能内生识别效率俱乐部。
Summary This paper proposes a unified framework for accommodating both time and cross‐sectional dependence in modelling technical efficiency in stochastic frontier models by combining the exogenously driven factor‐based approach and an endogenous threshold efficiency regime selection mechanism. This approach is able to deal with both weak and strong cross‐sectional dependence in a flexible manner. Using a dataset of 26 OECD countries over 1970–2010, we provide satisfactory estimation results for the production technology parameters and the associated efficiency ranking of individual countries. We find a positive spillover effect on efficiency, supporting the hypothesis that knowledge spillover is more likely to be induced by technological proximity. Furthermore, our approach enables us to identify efficiency clubs endogenously. Copyright © 2015 John Wiley & Sons, Ltd.