Visibly Fair Mechanisms

Fuente: arXiv
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Autores principales: Bó, Inácio, Caspari, Gian, Khanna, Manshu
Formato: Preprint
Publicado: 2025
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author Bó, Inácio
Caspari, Gian
Khanna, Manshu
author_facet Bó, Inácio
Caspari, Gian
Khanna, Manshu
contents Priority-based allocation of individuals to positions are pervasive, and elimination of justified envy is often, an absolute requirement. This leaves serial dictatorship (SD) as the only rule that avoids justified envy under standard direct mechanisms. What if SD outcomes are undesirable from a designer's perspective? We propose visible fairness, which demands fairness relative to the (potentially purposefully incomplete) preference information the mechanism elicits. Visibly fair mechanisms generalize SD; we fully characterize them and provide necessary and sufficient conditions for strategy-proofness. We show how to apply these results to design strategy-proof visibly fair rules that satisfy a broad class of distributional objectives. Visible fairness, however, results in a new information-efficiency trade-off: meeting distributional goals leads to the avoidance of eliciation of information about preferences that could prevent inefficiencies.
format Preprint
id arxiv_https___arxiv_org_abs_2506_19176
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Visibly Fair Mechanisms
Bó, Inácio
Caspari, Gian
Khanna, Manshu
Theoretical Economics
Priority-based allocation of individuals to positions are pervasive, and elimination of justified envy is often, an absolute requirement. This leaves serial dictatorship (SD) as the only rule that avoids justified envy under standard direct mechanisms. What if SD outcomes are undesirable from a designer's perspective? We propose visible fairness, which demands fairness relative to the (potentially purposefully incomplete) preference information the mechanism elicits. Visibly fair mechanisms generalize SD; we fully characterize them and provide necessary and sufficient conditions for strategy-proofness. We show how to apply these results to design strategy-proof visibly fair rules that satisfy a broad class of distributional objectives. Visible fairness, however, results in a new information-efficiency trade-off: meeting distributional goals leads to the avoidance of eliciation of information about preferences that could prevent inefficiencies.
title Visibly Fair Mechanisms
topic Theoretical Economics
url https://arxiv.org/abs/2506.19176