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Strategy-Proofness Makes the Difference: Deferred-Acceptance with Responsive Priorities

Author

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  • Lars Ehlers

    () (Département de Sciences Économiques and CIREQ, Université de Montréal, Montréal, Québec H3C 3J7, Canada)

  • Bettina Klaus

    () (Faculty of Business and Economics, University of Lausanne, Internef 538, CH-1015, Lausanne, Switzerland)

Abstract

In college admissions and student placements at public schools, the admission decision can be thought of as assigning indivisible objects with capacity constraints to a set of students such that each student receives at most one object and monetary compensations are not allowed. In these important market design problems, the agent-proposing deferred-acceptance (DA) mechanism with responsive strict priorities performs well, and economists have successfully implemented DA-mechanisms or slight variants thereof. We show that almost all real-life mechanisms used in such environments---including the large classes of priority mechanisms and linear programming mechanisms---satisfy a set of simple and intuitive properties. Once we add strategy-proofness to these properties, DA-mechanisms are the only ones surviving. In market design problems that are based on weak priorities (like school choice), generally multiple tie-breaking (MTB) procedures are used and then a mechanism is implemented with the obtained strict priorities. By adding stability with respect to the weak priorities, we establish the first normative foundation for MTB-DA-mechanisms that are used in New York City.

Suggested Citation

  • Lars Ehlers & Bettina Klaus, 2014. "Strategy-Proofness Makes the Difference: Deferred-Acceptance with Responsive Priorities," Mathematics of Operations Research, INFORMS, vol. 39(4), pages 949-966, November.
  • Handle: RePEc:inm:ormoor:v:39:y:2014:i:4:p:949-966
    DOI: 10.1287/moor.2014.0662
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Ehlers, Lars & Klaus, Bettina, 2016. "Object allocation via deferred-acceptance: Strategy-proofness and comparative statics," Games and Economic Behavior, Elsevier, vol. 97(C), pages 128-146.
    2. Ehlers, Lars & Hafalir, Isa E. & Yenmez, M. Bumin & Yildirim, Muhammed A., 2014. "School choice with controlled choice constraints: Hard bounds versus soft bounds," Journal of Economic Theory, Elsevier, vol. 153(C), pages 648-683.
    3. Lars Ehlers & Bettina Klaus, 2013. "House Allocation via Deferred-Acceptance," Cahiers de recherche 06-2013, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
    4. Afacan, Mustafa Og̃uz & Dur, Umut Mert, 2017. "When preference misreporting is Harm[less]ful?," Journal of Mathematical Economics, Elsevier, vol. 72(C), pages 16-24.
    5. Doğan, Battal & Klaus, Bettina, 2018. "Object allocation via immediate-acceptance: Characterizations and an affirmative action application," Journal of Mathematical Economics, Elsevier, vol. 79(C), pages 140-156.
    6. Lars Ehlers & Bettina Klaus, 2013. "House Allocation via Deferred-Acceptance (N.B.: This paper has been extended and results are now contained in working paper 14.08.)," Cahiers de Recherches Economiques du Département d'économie 13.10, Université de Lausanne, Faculté des HEC, Département d’économie.
    7. Karakaya, Mehmet & Klaus, Bettina & Schlegel, Jan Christoph, 2019. "Top trading cycles, consistency, and acyclic priorities for house allocation with existing tenants," Journal of Economic Theory, Elsevier, vol. 184(C).
    8. Bettina Klaus & David F. Manlove & Francesca Rossi, 2014. "Matching under Preferences," Cahiers de Recherches Economiques du Département d'économie 14.07, Université de Lausanne, Faculté des HEC, Département d’économie.
    9. Nanyang Bu, 2014. "Characterizations of the sequential priority rules in the assignment of object types," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 43(3), pages 635-645, October.
    10. Battal Dogan & Serhat Dogan & Kemal Yildiz, 2017. "Lexicographic Choice under Variable Capacity Constraints," Cahiers de Recherches Economiques du Département d'économie 17.02, Université de Lausanne, Faculté des HEC, Département d’économie.
    11. Bettina Klaus & Alexandru Nichifor, 2020. "Serial dictatorship mechanisms with reservation prices," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 70(3), pages 665-684, October.
    12. Harless, Patrick, 2014. "A School Choice Compromise: Between Immediate and Deferred Acceptance," MPRA Paper 61417, University Library of Munich, Germany.

    More about this item

    Keywords

    deferred-acceptance mechanism; indivisible objects allocation; multiple tie-breaking; school choice; strategy-proofness;

    JEL classification:

    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
    • D70 - Microeconomics - - Analysis of Collective Decision-Making - - - General

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