Proportionality Degree in Participatory Budgeting

Fuente: arXiv
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Autori principali: Filos-Ratsikas, Aris, Gogulapati, Sreedurga, Kalantzis, Georgios
Natura: Preprint
Pubblicazione: 2026
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author Filos-Ratsikas, Aris
Gogulapati, Sreedurga
Kalantzis, Georgios
author_facet Filos-Ratsikas, Aris
Gogulapati, Sreedurga
Kalantzis, Georgios
contents We initiate the study of the proportionality degree for participatory budgeting, with a particular focus on two popular methods: the Method of Equal Shares (MES) and Phragmen's Sequential Rule. Among other results, we derive tight bounds (up to small constant factors) on the proportionality degree of these two rules, which showcase that, despite MES satisfying stronger axiomatic guarantees, the two rules have the same proportionality degree from a quantitative perspective. We complement our theoretical findings with an extensive experimental evaluation on real-world participatory budgeting datasets, the results of which closely mirror those of our developed theory. Our experiments also provide more insights into the comparisons between the rules.
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id arxiv_https___arxiv_org_abs_2603_09660
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Proportionality Degree in Participatory Budgeting
Filos-Ratsikas, Aris
Gogulapati, Sreedurga
Kalantzis, Georgios
Computer Science and Game Theory
We initiate the study of the proportionality degree for participatory budgeting, with a particular focus on two popular methods: the Method of Equal Shares (MES) and Phragmen's Sequential Rule. Among other results, we derive tight bounds (up to small constant factors) on the proportionality degree of these two rules, which showcase that, despite MES satisfying stronger axiomatic guarantees, the two rules have the same proportionality degree from a quantitative perspective. We complement our theoretical findings with an extensive experimental evaluation on real-world participatory budgeting datasets, the results of which closely mirror those of our developed theory. Our experiments also provide more insights into the comparisons between the rules.
title Proportionality Degree in Participatory Budgeting
topic Computer Science and Game Theory
url https://arxiv.org/abs/2603.09660