Volume 55, 2021Regular articles published in advance of the transition of the journal to Subscribe to Open (S2O). Free supplement sponsored by the Fonds National pour la Science Ouverte
|Page(s)||S385 - S399|
|Published online||02 March 2021|
Fuzzy weak link approach to the two-stage DEA
University of Piraeus, School of Information and Communication Technologies, Pireus, Greece.
2 Wroclaw University of Science and Technology, Faculty of Computer Science and Management, Wroclaw, Poland.
* Corresponding author: email@example.com
Accepted: 18 September 2019
This paper refers to a recent approach to two-stage DEA called the weak link approach. It underlines the lack of solution uniqueness in this approach to DEA and the fact that in order for the solution to the weak link approach to be unique, the decision maker needs to express a preference on which Pareto solution would be most satisfactory. In this paper, we propose to use a fuzzy set approach called fuzzy bicriterial programming to help the decision maker to express this preference. Fuzzy bicriterial programming is explained and then applied to the weak link approach to the DEA. It is shown that for each candidate (Pareto) solution to the original weak link approach, there exists an expert opinion that can lead to the unequivocal selection of this solution due to the use of the fuzzy approach. The proposal is illustrated with examples.
Mathematics Subject Classification: 90C70 / 90B50
Key words: Two-stage DEA / weak link approach / fuzzy preferences / fuzzy multicriteria programming
© EDP Sciences, ROADEF, SMAI 2021
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