Measuring Economies of Diversification: A Frontier Approach
多元化经济的测量：前沿方法
The purpose of this paper is to improve the statistical analysis of multiproduct firm behavior. The authors offer a new empirical technique that can be used to directly analyze issues such as subadditivity, expansion path subadditivity, economies of scope, and economies of diversification. Previous applied work has used "nonfrontier" estimation techniques. The authors show how to introduce frontier approaches to multiproduct cost analysis, which can be applied to any of…