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Efficient targets and reference sets in selectively convex technologies

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  • Mehdiloo, Mahmood
  • Papaioannou, Grammatoula
  • Podinovski, Victor V.

Abstract

Conventional models of data envelopment analysis (DEA) typically assume that the underlying production technology is a convex set. It is known that such assumption may be clearly unsubstantiated in certain cases. Examples include studies in which some inputs or outputs are stated as proportions or percentages, or are represented by categorical measures. Excluding such “problematic” inputs and outputs from the assumption of convexity while assuming the latter for the remaining measures leads to the notion of selective convexity. Further examples of selectively convex technologies include technologies parameterized by an environmental factor and technologies in which only the input or output sets are convex. In this paper, we consider the identification of efficient targets and reference sets of decision making units in a selectively convex technology, which has not yet been explored in the literature. We show that, for such technologies, the conventional method based on the solution of the additive DEA model may not correctly identify the reference sets and needs an adjustment.

Suggested Citation

  • Mehdiloo, Mahmood & Papaioannou, Grammatoula & Podinovski, Victor V., 2024. "Efficient targets and reference sets in selectively convex technologies," Omega, Elsevier, vol. 129(C).
    • Handle: RePEc:eee:jomega:v:129:y:2024:i:c:s0305048324001208
    DOI: 10.1016/j.omega.2024.103155
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