Abstract
We consider a one-to-one assignment problem consisting of matching n objects with n agents. Any matching leads to a utility vector whose n components measure the satisfaction of the various agents. We want to find an assignment maximizing a global utility defined as an ordered weighted average (OWA) of the n individual utilities. OWA weights are assumed to be non-increasing with ranks of satisfaction so as to include an idea of fairness in the definition of social utility. We first prove that the problem is NP-hard; then we propose a polynomial algorithm under some restrictions on the set of admissible weight vectors, proving that the problem belongs to XP.
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The referees are gratefully acknowledged for their constructive comments and suggestions which resulted in an improved presentation of the paper.
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Lesca, J., Minoux, M. & Perny, P. The Fair OWA One-to-One Assignment Problem: NP-Hardness and Polynomial Time Special Cases. Algorithmica 81, 98–123 (2019). https://doi.org/10.1007/s00453-018-0434-5
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DOI: https://doi.org/10.1007/s00453-018-0434-5