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Committee formation under constraints through randomized voting rules on separable domains

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  • Roy, Souvik
  • Sadhukhan, Soumyarup

Abstract

We consider the problem of choosing a committee from a set of available candidates through a randomized social choice function when there are restrictions on the committee to be formed and agents have separable preferences over the committees. We show that when the set of feasible committees is non-vacuously restricted, that is, cannot be seen as the set of all committees with a subset of members, a random social choice function is onto and strategy-proof if and only if it is random dictatorial.

Suggested Citation

  • Roy, Souvik & Sadhukhan, Soumyarup, 2023. "Committee formation under constraints through randomized voting rules on separable domains," Journal of Economic Theory, Elsevier, vol. 209(C).
    • Handle: RePEc:eee:jetheo:v:209:y:2023:i:c:s0022053123000443
    DOI: 10.1016/j.jet.2023.105648
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    References listed on IDEAS

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    1. Barbera, Salvador & Masso, Jordi & Neme, Alejandro, 2005. "Voting by committees under constraints," Journal of Economic Theory, Elsevier, vol. 122(2), pages 185-205, June.
    2. Bhaskar Dutta & Hans Peters & Arunava Sen, 2008. "Strategy-proof cardinal decision schemes," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 30(4), pages 701-702, May.
    3. Chatterji, Shurojit & Zeng, Huaxia, 2019. "Random mechanism design on multidimensional domains," Journal of Economic Theory, Elsevier, vol. 182(C), pages 25-105.
    4. Chatterji, Shurojit & Sen, Arunava & Zeng, Huaxia, 2014. "Random dictatorship domains," Games and Economic Behavior, Elsevier, vol. 86(C), pages 212-236.
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    8. Peters, Hans & Roy, Souvik & Sadhukhan, Soumyarup & Storcken, Ton, 2017. "An extreme point characterization of strategy-proof and unanimous probabilistic rules over binary restricted domains," Journal of Mathematical Economics, Elsevier, vol. 69(C), pages 84-90.
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    More about this item

    Keywords

    Committee formation under constraints; Random social choice function; Strategy-proofness; Ontoness; Random dictatorial rules;
    All these keywords.

    JEL classification:

    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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