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On Random Matching Markets: Properties and Equilibria

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  • Joana Pais

Abstract

We consider centralized matching markets in which, starting from an arbitrary match- ing, frms are successively chosen in a random fashion and offer their positions to the workers they prefer the most. We propose an algorithm that generalizes some well-known algorithms and explore some of its properties. In particular, different executions of the algorithm may lead to different output matchings. We then study incentives in the rev- elation game induced by the algorithm. We prove that ordinal equilibria always exist. Furthermore, every matching that results from an equilibrium play of the game is stable for a particular preference profile. Namely, if an ordinal equilibrium exists in which firms reveal their true preferences, only matchings that are stable for the true preferences can be obtained.

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Bibliographic Info

Paper provided by ISEG - School of Economics and Management, Department of Economics, University of Lisbon in its series Working Papers Department of Economics with number 2006/11.

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Date of creation: 2006
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Handle: RePEc:ise:isegwp:wp112006

Contact details of provider:
Postal: Department of Economics, ISEG - School of Economics and Management, University of Lisbon, Rua do Quelhas 6, 1200-781 LISBON, PORTUGAL
Web page: https://aquila1.iseg.ulisboa.pt/aquila/departamentos/EC

Related research

Keywords: Matching Markets; Stability; Random Mechanism.;

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References

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  1. Joana Pais, 2006. "Incentives in Decentralized Random Matching Markets," Working Papers Department of Economics 2006/12, ISEG - School of Economics and Management, Department of Economics, University of Lisbon.
  2. EHLERS, Lars, 2003. "In Search of Advice for Physicians in Entry-Level Medical Markets," Cahiers de recherche 13-2003, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
  3. Ehlers, Lars & Masso, Jordi, 2007. "Incomplete information and singleton cores in matching markets," Journal of Economic Theory, Elsevier, vol. 136(1), pages 587-600, September.
  4. Blum, Yosef & Roth, Alvin E. & Rothblum, Uriel G., 1997. "Vacancy Chains and Equilibration in Senior-Level Labor Markets," Journal of Economic Theory, Elsevier, vol. 76(2), pages 362-411, October.
  5. Alvin E. Roth & Uriel G. Rothblum, 1999. "Truncation Strategies in Matching Markets--In Search of Advice for Participants," Econometrica, Econometric Society, vol. 67(1), pages 21-44, January.
  6. Sotomayor, Marilda, 1996. "A Non-constructive Elementary Proof of the Existence of Stable Marriages," Games and Economic Behavior, Elsevier, vol. 13(1), pages 135-137, March.
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Cited by:
  1. César Alonso-Borrego & Antonio Romero-Medina & Matteo Triossi, 2007. "Converging to Efficiency: the Ramón y Cajal Program Experience," Carlo Alberto Notebooks 49, Collegio Carlo Alberto.
  2. Joana Pais, 2008. "Random matching in the college admissions problem," Economic Theory, Springer, vol. 35(1), pages 99-116, April.
  3. Pais, Joana, 2008. "Incentives in decentralized random matching markets," Games and Economic Behavior, Elsevier, vol. 64(2), pages 632-649, November.

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