Table of Contents Author Guidelines Submit a Manuscript
Mathematical Problems in Engineering
Volume 2014, Article ID 269768, 6 pages
Research Article

A Cross-Efficiency Based Ranking Method for Finding the Most Efficient DMU

Department of Mathematics, Islamic Azad University, Karaj Branch, Karaj, Iran

Received 5 February 2014; Accepted 4 April 2014; Published 22 April 2014

Academic Editor: Changzhi Wu

Copyright © 2014 S. Sadeghi Gavgani and M. Zohrehbandian. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In many applications of DEA, ranking of DMUs and finding the most efficient DMU are desirable, as reported by Toloo (2013). In this paper, after introducing an improvement to the measure of cross-efficiency by Jahanshahloo et al. (2011), we develop a new ranking method under the condition of variable returns to scale (VRS). Numerical example illustrates the effectiveness of the proposed cross-efficiency based ranking method and demonstrates the advantages of our proposal, against the other ranking approaches.