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Journal of Applied Mathematics
Volume 2004 (2004), Issue 5, Pages 395-407

Prioritization method for frontier DMUs: a distance-based approach

1Department of Mathematics, Islamic Azad University, P.O. Box 41335-3516, Rasht, Iran
2Department of Mathematics, Teacher Training University, P.O. Box 41335-3516, Tehran, Iran
3Department of Mathematics, Islamic Azad University, P.O. Box 41335-3516, Lahijan, Iran

Received 7 October 2003; Revised 27 May 2004

Copyright © 2004 Hindawi Publishing Corporation. 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 nonparametric methods, if the number of observations is relatively small as compared to the sum of number of inputs and outputs, many units are evaluated as efficient. Several methods for prioritizing these efficient units are reported in literature. Andersen et al. and Mehrabian et al. proposed two methods for ranking efficient units, but both methods break down in some cases. This paper describes a new DEA ranking approach that uses L2-norm.