Ranking of Decision Making Units in DEA Using fuzzy Logic

In traditional data envelopment analysis (DEA) models many decision making units(DMUs) are classified as efficient and a large number of methods for fully ranking both efficientand inefficient DMUs have been proposed. Cross-efficiency method is one of them. In crossefficiencyranking methods, in addition efficiency value all units, also selection of weights areimportant. In this paper the weights of the cross-evaluation determined by logical fuzzy, such as it isproportional with efficiencies. Therefore, it basically differs from previous methods.

Keywords:

Data Envelopment Analysis , Cross-efficiency evaluation , Fuzzy logic , Ranking