Procedural versus Opportunity-Wise Equal Treatment of Alternatives: Neutrality Revisited
Ozkes, Ali Ihsan; Sanver, Remzi (2017), Procedural versus Opportunity-Wise Equal Treatment of Alternatives: Neutrality Revisited. https://basepub.dauphine.fr/handle/123456789/21024
TypeDocument de travail / Working paper
Series titlePreprint Lamsade
MetadataShow full item record
Author(s)Ozkes, Ali Ihsan
Groupement de Recherche en Économie Quantitative d'Aix-Marseille [GREQAM]
Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Abstract (EN)We revisit the neutrality requirement in social choice theory. We propose a weakening of the standard neutrality condition, by allowing for different procedural treatment for different alternatives while entailing that alternatives enjoy same ex-ante possibility to be chosen. We compare these two conditions theoretically and computationally. Furthermore, we explore social choice problems in which this weakening resolves impossibilities that stem from a fundamental tension between neutrality and anonymity. Finally, we show that in certain social choice problems, this weakening provides an immediate refinement of anonymous, neutral, and Pareto optimal social choice rules towards retaining resoluteness.
Subjects / KeywordsPareto optimality; neutrality; anonymity; social choice functions
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