{"type":"ScholarlyArticle","title":"An Experimental Comparison of Multiwinner Voting Rules on Approval Elections","authors":[{"name":"Piotr Faliszewski","slug":"piotr-faliszewski","given":"Piotr","family":"Faliszewski","affiliation":"AGH University , Poland"},{"name":"Martin Lackner","slug":"martin-lackner","given":"Martin","family":"Lackner","affiliation":"TU Wien , Austria"},{"name":"Krzysztof Sornat","slug":"krzysztof-sornat","given":"Krzysztof","family":"Sornat","affiliation":"IDSIA , USI-SUPSI , Switzerland"},{"name":"Stanisław Szufa","slug":"stanis-aw-szufa","given":"Stanisław","family":"Szufa","affiliation":"AGH University , Poland"}],"abstract":"In this paper, we experimentally compare major approval based multiwinner voting rules. To this end, we define a measure of similarity between two equal sized committees subject to a given election. Using synthetic elections coming from several distributions, we analyze how similar are the committees provided by prominent voting rules. Our results can be visualized as maps of voting rules, which provide a counterpoint to a purely axiomatic classification of voting rules. The strength of our proposed method is its independence from preimposed classifications (such as the satisfaction of concrete axioms), and that it indeed offers a much finer distinction than the current state of axiomatic analysis.","doi":"10.24963/ijcai.2023/298","url":"https://ijcai.org/proceedings/2023/298","pdf":"https://ijcai.org/proceedings/2023/0298.pdf","markdown":"https://ijcai.org/proceedings/2023/298.md","bibtex":"https://ijcai.org/proceedings/2023/bibtex/298","volume":{"slug":"2023","title":"Proceedings of the Thirty-Second International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2023","url":"https://ijcai.org/proceedings/2023/","year":2023,"location":"Macao, SAR","dates":"19-25 August 2023","editors":"Edith Elkind","isbn":"978-1-956792-03-4","publisher":"International Joint Conferences on Artificial Intelligence Organization","doi_prefix":"10.24963/ijcai.2023"},"section":"Game Theory and Economic Paradigms","track":"Main Track","number":298,"pages":{"first":2675,"last":2683},"keywords":["Game Theory and Economic Paradigms: GTEP: Computational social choice"],"videos":[],"references":[{"position":1,"raw":"[Aziz et al., 2017] H. 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