Monte Carlo methods for the Shapley-Shubik power index

Yuto Ushioda, Masato Tanaka and Tomomi Matsui

This paper deals with the problem of calculating the Shapley-Shubik power index in weighted majority games. We propose an efficient Monte Carlo algorithm based on an implicit hierarchical structure of permutations of players. Our algorithm outputs a vector of power indices preserving the monotonicity, with respect to the voting weights. We show that our algorithm reduces the required number of samples, compared with the naive algorithm.

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Year of publication:	2022
Authors:	Ushioda, Yuto ; Tanaka, Masato ; Matsui, Tomomi
Published in:	Games. - Basel : MDPI, ISSN 2073-4336, ZDB-ID 2527220-2. - Vol. 13.2022, 3, Art.-No. 44, p. 1-14
Subject:	Monte Carlo algorithm \| power index \| voting game \| weighted majority game \| Monte-Carlo-Simulation \| Monte Carlo simulation \| Spieltheorie \| Game theory \| Abstimmungsregel \| Voting rule \| Abstimmungsspiel \| Voting game

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Type of publication:	Article
Type of publication (narrower categories):	Aufsatz in Zeitschrift ; Article in journal
Language:	English
Notes:	"This paper is an extended version of our paper published in the 21st Japan-Korea Joint Workshop on Algorithms and Computation (WAAC), Fukuoka, Japan, 26–27 August 2018." - Fußnote
Other identifiers:	10.3390/g13030044 [DOI]
Source:	ECONIS - Online Catalogue of the ZBW

Persistent link: https://www.econbiz.de/10013252753