DEA analysis (Data Envelopment Analysis abbreviation DEA) is a assessment technique effective method to carry out compare relative efficiency and benefit for decision unit which has much input and much output aspects.

• 数据包络分析(Data Envelopment Analysis简称DEA)是一种对若干同类型的具有多输入、多输出的决策单元进行相对效率和效益方面比较的有效方法。