The weighted additive distance function
本文为数据包络分析中的加权加性模型赋予距离函数结构，定义了加权加性距离函数并展示其主要性质，对研究生产效率的学者有用。
Distance functions in production theory are mathematical structures that characterize the belonging to the reference technology through a numerical value, behave as technical efficiency measures when the focus is analyzing an observed input–output vector within its production possibility set and present a dual relationship with some support function (profit, revenue, cost function). In this paper, we endow the well-known weighted additive models in Data Envelopment Analysis with a distance function structure, introducing the Weighted Additive Distance Function and showing its main properties.