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数据包络模型（ＤａｔｅＥｎｖｅｌｏｐｍｅｎｔＡｎａｌｙｓｉｓ ＤＥＡ）基于Ｆａｒｒｅｌｌ边际方法学，８０年代初期共同开发的运筹学又一研究领域。它主要用于评价同类型部门或单位（称为决策单元）间相对效率，也是估计多输入与多输出及多目标决策类问题的有力工具［１
The Data Envelopment Analysis (DEA) model is based on the Farrell Marginal Methodology, another field of research in operational research that was co-developed in the early 1980s. It is mainly used to evaluate the relative efficiency of the same type of department or unit (called the decision unit), and it is also a powerful tool for estimating the problems of multiple input and multiple output and multi-objective decision making [1