Group Identification Problems in Different Settings

FEDERICO FIORAVANTI; FERNANDO TOHMÉ

Workshop; 1st Amsterdam/Saint-Etienne Workshop on Social Choice; 2023

Group identification Problems are introduced as the issue of classifying the members ofa group in terms of the opinions of their potential members. This involves a set ofagents N, each one having an opinion about which agents should be classifiedas belonging to a specific subset J. A Collective Identity Function (CIF) aggregatesthose opinions yielding the class of members deemed J. A social planner postulate axioms,intended to ensure fair and socially desirable outcomes, characterizing different CIFs. This problem is considered with a finite and an infinite set of agents, and when the opinions are fuzzy.