Method of Data Envelopment Analysis Based on the Theory of Partially Ordered Sets
基于偏序集理论的数据包络分析方法研究

In this paper, a characterization of effective units is given, and a necessary and sufficient condition for DEA efficiency(C 2WY) is provided. At the same time, something about signification and theoretic basis of DEA efficiency is discussed by using the theory on partially ordered set. At last, an evaluating method on using qualitative variables in Data Envelopment Analysis is given.