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Robust and verifiable proportionality axioms for multiwinner voting
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Brill, Markus and Peters, Jannik (2023) Robust and verifiable proportionality axioms for multiwinner voting. In: The Twenty-Fourth ACM Conference on Economics and Computation (EC'23), London, UK, 9-12 Jul 2023. Published in: Proceedings of the 24th ACM Conference on Economics and Computation (EC) p. 301. ISBN 9798400701047. doi:10.1145/3580507.3597785
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Official URL: http://dx.doi.org/10.1145/3580507.3597785
Abstract
When selecting a subset of candidates (a so-called committee) based on the preferences of voters, proportional representation is often a major desideratum. When going beyond simplistic models such as party-list or district-based elections, it is surprisingly challenging to capture proportionality formally. As a consequence, the literature has produced numerous competing criteria of when a selected committee qualifies as proportional. Two of the most prominent notions are proportionality for solid coalitions (PSC) [Dummett, 1984] and extended justified representation (EJR) [Aziz et al., 2017]. Both definitions guarantee proportional representation to groups of voters with very similar preferences; such groups are referred to as solid coalitions by Dummett and as cohesive groups by Aziz et al. However, they lose their bite when groups are only almost solid or cohesive.
Item Type: | Conference Item (Paper) | |||||||||
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Subjects: | H Social Sciences > HM Sociology J Political Science > JF Political institutions (General) Q Science > Q Science (General) Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | |||||||||
Library of Congress Subject Headings (LCSH): | Proportional representation, Proportional representation -- Simulation methods, Preferential ballot -- Data processing, Artificial Intelligence, Voting, Group decision making | |||||||||
Journal or Publication Title: | Proceedings of the 24th ACM Conference on Economics and Computation (EC) | |||||||||
Publisher: | ACM | |||||||||
ISBN: | 9798400701047 | |||||||||
Book Title: | Proceedings of the 24th ACM Conference on Economics and Computation | |||||||||
Official Date: | 7 July 2023 | |||||||||
Dates: |
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Page Range: | p. 301 | |||||||||
DOI: | 10.1145/3580507.3597785 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | © ACM, 2023. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proceedings of the 24th ACM Conference on Economics and Computation (EC) p. 301. http://doi.acm.org/10.1145/3580507.3597785 | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 2 August 2023 | |||||||||
Date of first compliant Open Access: | 2 August 2023 | |||||||||
RIOXX Funder/Project Grant: |
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Conference Paper Type: | Paper | |||||||||
Title of Event: | The Twenty-Fourth ACM Conference on Economics and Computation (EC'23) | |||||||||
Type of Event: | Conference | |||||||||
Location of Event: | London, UK | |||||||||
Date(s) of Event: | 9-12 Jul 2023 | |||||||||
Open Access Version: |
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