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Aggregating incomplete lists

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  • Puppe, Clemens
  • Tasnádi, Attila

Abstract

We study the aggregation of partial orders into a complete ordering, and prove both possibility and impossibility results in this context. First, we show that the standard independence of irrelevant alternatives condition is stronger here since even dictatorial aggregation rules may fail to satisfy it. On the other hand, domain restrictions enable non-dictatorial aggregation rules satisfying a number of attractive properties. In particular, we show that anonymous aggregation satisfying a weak form of independence of irrelevant alternatives is possible on a large class of 'extended' Condorcet domains.

Suggested Citation

  • Puppe, Clemens & Tasnádi, Attila, 2025. "Aggregating incomplete lists," Working Paper Series in Economics 172, Karlsruhe Institute of Technology (KIT), Department of Economics and Management.
    • Handle: RePEc:zbw:kitwps:323217
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    References listed on IDEAS

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    1. László Csató, 2023. "A comparative study of scoring systems by simulations," Journal of Sports Economics, , vol. 24(4), pages 526-545, May.
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    4. Puppe, Clemens & Tasnádi, Attila, 2025. "Violin virtuosi: Do their performances fade over time?," Working Paper Series in Economics 171, Karlsruhe Institute of Technology (KIT), Department of Economics and Management.
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    JEL classification:

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

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