Journal of the Operations Research Society of China ›› 2022, Vol. 10 ›› Issue (4): 763-783.doi: 10.1007/s40305-019-00264-x

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An Alternative Approach to Rank Efficient DMUs in DEA via Cross-Efficiency Evaluation, Gini Coefficient, and Bonferroni Mean

Zahra Behdani, Majid Darehmiraki   

  1. Department of Mathematics and Statistics, Behbahan Khatam Alanbia University of Technology, Behbahan, Khouzestan, Iran
  • Received:2019-06-05 Revised:2019-08-24 Online:2022-12-30 Published:2022-11-09
  • Contact: Majid Darehmiraki,Zahra Behdani E-mail:darehmiraki@bkatu.ac.ir;zbehdani@yahoo.com

Abstract: In this paper, we focus on a critical problem in data envelopment analysis (DEA) and propose a simple resolution for it. The major problem of the DEA is the existence of several efficient decision-making units (DMUs). To deal with this issue, we introduce a method that involves cross-efficiency evaluation, Gini coefficient, and Bonferroni mean. First, a cross-efficiency matrix is developed. Then, mixing the Gini coefficient and Bonferroni mean, a Gini–Bonferroni (GB) index is proposed for ranking efficient DMUs, where the DMUs with bigger GB are ranked higher. The proposed method broke the tie between efficient DMUs. Finally, a numerical example and real application of this method are presented in the ranking of research and development (R&D) investment companies in the pharmaceutical and biotechnology industries.

Key words: Data envelopment analysis, Efficiency, Gini coefficient, Bonferroni mean, Cross-efficiency evaluation, Ranking, Efficient units

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