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Article Dans Une Revue European Journal of Operational Research Année : 2022

Procedures for ranking technical and cost efficient units: With a focus on nonconvexity

Jafar Sadeghi
  • Fonction : Auteur
Mehdi Toloo
  • Fonction : Auteur
Ignace van de Woestyne
  • Fonction : Auteur

Résumé

This contribution extends the literature on super-efficiency by focusing on ranking cost-efficient observations. To the best of our knowledge, the focus has always been on technical super-efficiency and this focus on ranking cost-efficient observations may well open up a new topic. Furthermore, since the convexity axiom has both an impact on technical and cost efficiency, we pay a particular attention to the effect of nonconvexity on both super-efficiency notions. Apart from a numerical example, we use a secondary data set guaranteeing replication to illustrate these efficiency and super-efficiency concepts. Two empirical conclusions emerge. First, the cost super-efficiency notion ranks differently from the technical super-efficiency concept. Second, both cost and technical super-efficiency notions rank differently under convex and nonconvex technologies.
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Dates et versions

hal-03595989 , version 1 (17-05-2022)

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Citer

Kristiaan Kerstens, Jafar Sadeghi, Mehdi Toloo, Ignace van de Woestyne. Procedures for ranking technical and cost efficient units: With a focus on nonconvexity. European Journal of Operational Research, 2022, 300 (1), pp.269-281. ⟨10.1016/j.ejor.2021.10.023⟩. ⟨hal-03595989⟩
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