Equivalent standard data envelopment analysis models to provide super-efficiency scores

Equivalent standard data envelopment analysis models to provide super-efficiency scores

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Article ID: iaor20032120
Country: United Kingdom
Volume: 54
Issue: 1
Start Page Number: 101
End Page Number: 108
Publication Date: Jan 2003
Journal: Journal of the Operational Research Society
Authors: ,
Keywords: measurement
Abstract:

DEA super-efficiency models were introduced originally with the objective of providing a tie-breaking procedure for ranking units rated as efficient in conventional DEA models. This objective has been expanded to include sensitivity analysis, outlier identification and inter-temporal analysis. However, not all units rated as efficient in conventional DEA models have feasible solutions in DEA super-efficiency models. We propose a new super-efficiency model that (a) generates the same super-efficiency scores as conventional super-efficiency models for all units having a feasible solution under the latter, and (b) generates a feasible solution for all units not having a feasible solution under the latter. Empirical examples are provided to compare the two super-efficiency models.

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