This paper discusses the impact of ganging decision making units (DMUs) on the cross-efficiency evaluation in data envelopment analysis (DEA). A group of DMUs are said to be ganging-together if the minimum and the maximum cross-efficiency scores they give to all other DMUs are identical. This study demonstrates that the ganging phenomenon can significantly influence the cross-efficiency evaluation in favour of some DMUs. To overcome this shortcoming, we propose a gangless cross-efficiency evaluation approach. The suggested method reduces the effect of ganging and generates a more diversified list of top performing units. An application to the Tehran stock market is used to show the benefits of gangless cross-evaluation.
Accepté le :
DOI : 10.1051/ro/2018060
Keywords: Data envelopment analysis, cross-efficiency evaluation, ganging decision making units, gangless cross-evaluation, stock selection
Amin, Gholam R. 1 ; Oukil, Amar 1
@article{RO_2019__53_2_645_0,
author = {Amin, Gholam R. and Oukil, Amar},
title = {Gangless cross-evaluation in {DEA:} an application to stock selection},
journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
pages = {645--655},
year = {2019},
publisher = {EDP Sciences},
volume = {53},
number = {2},
doi = {10.1051/ro/2018060},
mrnumber = {3961737},
zbl = {1423.90075},
language = {en},
url = {https://www.numdam.org/articles/10.1051/ro/2018060/}
}
TY - JOUR AU - Amin, Gholam R. AU - Oukil, Amar TI - Gangless cross-evaluation in DEA: an application to stock selection JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2019 SP - 645 EP - 655 VL - 53 IS - 2 PB - EDP Sciences UR - https://www.numdam.org/articles/10.1051/ro/2018060/ DO - 10.1051/ro/2018060 LA - en ID - RO_2019__53_2_645_0 ER -
%0 Journal Article %A Amin, Gholam R. %A Oukil, Amar %T Gangless cross-evaluation in DEA: an application to stock selection %J RAIRO - Operations Research - Recherche Opérationnelle %D 2019 %P 645-655 %V 53 %N 2 %I EDP Sciences %U https://www.numdam.org/articles/10.1051/ro/2018060/ %R 10.1051/ro/2018060 %G en %F RO_2019__53_2_645_0
Amin, Gholam R.; Oukil, Amar. Gangless cross-evaluation in DEA: an application to stock selection. RAIRO - Operations Research - Recherche Opérationnelle, Tome 53 (2019) no. 2, pp. 645-655. doi: 10.1051/ro/2018060
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