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Finding all stable matchings with assignment constraints

Author

Listed:
  • Gutin, Gregory Z.
  • Neary, Philip R.
  • Yeo, Anders

Abstract

In this paper we consider stable matchings subject to assignment constraints. These are matchings that require certain assigned pairs to be included, insist that some other assigned pairs are not, and, importantly, are stable. Our main contribution is an algorithm, based on the iterated deletion of unattractive alternatives (Balinski and Ratier, 1997; Gutin et al., 2023), that determines if and when a given list of constraints is compatible with stability. Whenever there is a stable matching that satisfies the constraints, our algorithm outputs all of them (each in polynomial time per solution). This provides market designers with (i) a tool to test the feasibility of stable matchings subject to assignment constraints, and (ii) a tool to implement them when feasible.

Suggested Citation

  • Gutin, Gregory Z. & Neary, Philip R. & Yeo, Anders, 2024. "Finding all stable matchings with assignment constraints," Games and Economic Behavior, Elsevier, vol. 148(C), pages 244-263.
    • Handle: RePEc:eee:gamebe:v:148:y:2024:i:c:p:244-263
    DOI: 10.1016/j.geb.2024.09.004
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    Keywords

    Stable matchings; Assignment constraints; Iterated deletion of unattractive alternatives; Normal form;
    All these keywords.

    JEL classification:

    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • D47 - Microeconomics - - Market Structure, Pricing, and Design - - - Market Design
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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