The super-efficiency procedure for outlier identification, not for ranking efficient units

@article{Banker2006TheSP,
  title={The super-efficiency procedure for outlier identification, not for ranking efficient units},
  author={Rajiv D. Banker and Hsihui Chang},
  journal={European Journal of Operational Research},
  year={2006},
  volume={175},
  pages={1311-1320}
}
In this paper, we conduct simulation experiments to evaluate the performance of two alternative uses of the superefficiency procedure in Data Envelopment Analysis (DEA). The first is for outlier identification and the second is for ranking efficient units. We find that the ranking procedure does not perform satisfactorily. In fact, the correlations between the true efficiency and the estimated super-efficiency are negative for the subset of efficient observations, and the conventional DEA model… CONTINUE READING