L-R型区间DEA模型及其变换

L-R Type DEA Model and Its Transformation

不确定性条件下系统相对有效性评价是当前ＤＥＡ理论研究的前沿。本 文探讨了评价指标为Ｌ－Ｒ型区间数时，决策单元的相对有效性评价问 题，提出了 Ｌ－Ｒ型区间 ＤＥＡ模型。相对一般 ＤＥＡ模型，Ｌ－Ｒ型区间 ＤＥＡ模型具有计算简单、适用性广、经济含义明确等特点，具有更大的适应性。

The study of efficiency evaluation under uncertainty is highlighted by the vast existence of the stochastic or fuzzy factors in the evaluating problem. With the assumption that the input/output categories are interval numbers,a new kind of DEA model called L-R type interval DEA (IDEA) is proposed in this paper. It shows that the IDEA model has many advantages over the conventional DEA models and can be used to evaluate the relative efficiency of decision making units under uncertainty.