中文说明：数据包络分析 (DEA) 是由美国学者Cooper和Charnes等[12]于1978年提出的管理学、 运筹学领域交叉研究的方法. 它以相对有效性为基本概念, 研究具有多投入、 多产出特点的同质性部门是否有效的一种非参数模型. 其基本原理是根据投入和产出的观测值来估计相对有效的前沿曲面.
English Description：
Data envelopment analysis (DEA) is an interdisciplinary research method in the fields of management and operations research, which was proposed by Cooper and Charnes in 1978, A nonparametric model is used to study the efficiency of homogeneous departments with multi input and multi output characteristics. Its basic principle is to estimate the relatively effective frontier surface based on the observations of input and output