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Incentive-compatible simple mechanisms

Author

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  • Jung S. You

    (California State University, East Bay)

  • Ruben Juarez

    (University of Hawaii)

Abstract

We consider mechanisms for allocating a fixed amount of divisible resources among multiple agents when they have quasilinear preferences and can only report messages in a one-dimensional space. We show that in contrast with infinite-dimensional message spaces, efficiency is neither compatible with implementation in dominant strategies nor compatible with implementation in Bayesian Nash equilibrium. However, for the weaker notion of implementation, such as in the Nash equilibrium, we find that a class of ‘VCG-like’ mechanisms is the only efficient selection in one-dimensional message spaces. The trifecta in mechanism design, namely efficiency, fairness, and simplicity of implementation, is achieved via a mechanism that we introduce and characterize in this paper.

Suggested Citation

  • Jung S. You & Ruben Juarez, 2021. "Incentive-compatible simple mechanisms," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 71(4), pages 1569-1589, June.
    • Handle: RePEc:spr:joecth:v:71:y:2021:i:4:d:10.1007_s00199-021-01342-z
    DOI: 10.1007/s00199-021-01342-z
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    More about this item

    Keywords

    Resource-sharing; Cost-sharing; Implementation; Envy-free; VCG mechanisms;
    All these keywords.

    JEL classification:

    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • D79 - Microeconomics - - Analysis of Collective Decision-Making - - - Other

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