Super Efficiency

Abstract

AbstractWhen a DMU under evaluation is not included in the reference set of the envelopment models, the resulting DEA models are called super-efficiency DEA models. Charnes et al. (Int J Systems Sci 23:789–798, 1992) use a super-efficiency model to study the sensitivity of the efficiency classifications. Zhu (Eur J Operational Res 90:451–460, 1996) and Seiford and Zhu (Eur J Operational Res 108:127–139, 1998) develop a number of new super-efficiency models to determine the efficiency stability regions (see Chap. 11, Sensitivity Analysis). Andersen and Petersen (Manage Sci 39:1261–1264, 1993) propose using the CRS super-efficiency model in ranking the efficient DMUs. Also, the super-efficiency DEA models can be used in detecting influential observations (Wilson J Prod Anal 6:27–45, 1995) and in identifying the extreme efficient DMUs (Thrall Ann Oper Res 66:109–138, 1996). Seiford and Zhu (INFOR 37:174–187, 1999) study the infeasibility of various super-efficiency models developed from the envelopment models in Table 11.2, Chap. 11 (Sensitivity Analysis) presents other super-efficiency models that are used in sensitivity analysis.KeywordsSuper-efficiency ModelExtreme Efficient DMUsSeifordEnvelopment ModelInfeasibility ModelsThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.