United for change: deliberative coalition formation to change the status quo

Edith Elkind (), Davide Grossi (), Ehud Shapiro () and Nimrod Talmon ()
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Edith Elkind: University of Oxford
Davide Grossi: Groningen and University of Amsterdam
Ehud Shapiro: Weizmann Institute of Science
Nimrod Talmon: Ben-Gurion University

Social Choice and Welfare, 2024, vol. 63, issue 3, No 11, 717-746

Abstract: Abstract We study a setting in which a community wishes to identify a strongly supported proposal from a space of alternatives, in order to change the status quo. We describe a deliberation process in which agents dynamically form coalitions around proposals that they prefer over the status quo. We formulate conditions on the space of proposals and on the ways in which coalitions are formed that guarantee deliberation to succeed, that is, to terminate by identifying a proposal with the largest possible support. Our results provide theoretical foundations for the analysis of deliberative processes such as the ones that take place in online systems for democratic deliberation support.

Date: 2024
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DOI: 10.1007/s00355-024-01561-y

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