A Nonparametric Cost Approach to Scale Efficiency
从成本对偶角度提出一种非参数方法计算规模效率，为经济学和计量经济学研究者提供新的分析工具。
Starting with Farrell & Fieldhouse (1962), a host of notiparametric models have been developed for calculation of scale efficiency. A common property of these models is that they are specified in terms of input/output data. Duality theory has taught us that technological characteristics may be analyzed from either the primal or the dual cost side. The purpose of this paper is to introduce a nonparametric dual method of calculating scale efficiency.