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Ordinal Intensity-Efficient Allocations

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  • Georgios Gerasimou

Abstract

We study the assignment problem in situations where, in addition to having ordinal preferences, agents also have *ordinal intensities*: they can make simple and internally consistent comparisons such as "I prefer $a$ to $b$ more than I prefer $c$ to $d$" without necessarily being able to quantify them. In this new informational social-choice environment we first introduce a rank-based criterion that enables interpersonal comparability of such ordinal intensities. Building on this criterion, we define an allocation to be *"intensity-efficient"* if it is Pareto efficient with respect to the preferences induced by the agents' intensities and also such that, when another allocation assigns the same pairs of items to the same pairs of agents but in a "flipped" way, the former allocation assigns the commonly preferred item in every such pair to the agent who prefers it more. We present some first results on the (non-)existence of such allocations without imposing restrictions on preferences or intensities other than strictness.

Suggested Citation

  • Georgios Gerasimou, 2020. "Ordinal Intensity-Efficient Allocations," Papers 2011.04306, arXiv.org, revised Jan 2024.
    • Handle: RePEc:arx:papers:2011.04306
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    References listed on IDEAS

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    1. Marc Fleurbaey & Stéphane Zuber, 2021. "Fair Utilitarianism," American Economic Journal: Microeconomics, American Economic Association, vol. 13(2), pages 370-401, May.
    2. Georgios Gerasimou, 2019. "Simple Preference Intensity Comparisons," Discussion Paper Series, School of Economics and Finance 201905, School of Economics and Finance, University of St Andrews, revised 27 Apr 2020.
    3. Yeon-Koo Che & Ian Gale & Jinwoo Kim, 2013. "Assigning Resources to Budget-Constrained Agents," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 80(1), pages 73-107.
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