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Strategy-proof Preference Aggregation

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  • BOSSERT, Walter
  • SPRUMONT, Yves

Abstract

An aggregation rule maps each profile of individual strict preference orderings over a set of alternatives into a social ordering over that set. We call such a rule strategyproof if misreporting one’s preference never produces a social ordering that is strictly between the original ordering and one’s own preference. After describing a few examples of manipulable rules, we study in some detail three classes of strategy-proof rules: (i)rules based on a monotonic alteration of the majority relation generated by the preference profile; (ii)rules improving upon a fixed status-quo; and (iii) rules generalizing the Condorcet-Kemeny aggregation method.

Suggested Citation

  • BOSSERT, Walter & SPRUMONT, Yves, 2012. "Strategy-proof Preference Aggregation," Cahiers de recherche 2012-10, Universite de Montreal, Departement de sciences economiques.
    • Handle: RePEc:mtl:montde:2012-10
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    File URL: http://hdl.handle.net/1866/8856
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    References listed on IDEAS

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    1. Fleurbaey,Marc & Maniquet,François, 2011. "A Theory of Fairness and Social Welfare," Cambridge Books, Cambridge University Press, number 9780521715348.
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    Cited by:

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    2. Jean Lainé & Ali Ozkes & Remzi Sanver, 2016. "Hyper-stable social welfare functions," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 46(1), pages 157-182, January.

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    JEL classification:

    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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