Efficient algorithm for designing weighted voting games

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Abstract

Weighted voting games are mathematical models, used to analyse situations where voters with variable voting weight vote in favour of or against a decision. They have been applied in various political and economic organizations. Similar combinatorial models are also encountered in neuro-science and distributed systems. The calculation of voting powers of players in a weighted voting game has been extensively researched in the last few years. However, the inverse problem of designing a weighted voting game with a desirable distribution of power has received less attention. We present an elegant algorithm which uses generating functions and interpolation to compute an integer weight vector for target Banzhaf power indices. This algorithm has better performance than any other known to us. It can also be used to design egalitarian two-tier weighted voting games and the representative weighted voting game for a multiple weighted voting game.

Item Type: Report
Subjects: H Social Sciences > HB Economic Theory
H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management
J Political Science > JF Political institutions (General)
Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
Divisions: Faculty of Science, Engineering and Medicine > Science > Computer Science
Library of Congress Subject Headings (LCSH): Generating functions, Decision making -- Mathematical models, Voting -- Mathematical models, Game theory
Series Name: Department of Computer Science Research Report
Publisher: University of Warwick. Department of Computer Science
Official Date: 20 May 2007
Dates:
Date
Event
20 May 2007
UNSPECIFIED
Number: Number 434
Number of Pages: 22
DOI: CS-RR-434
Institution: University of Warwick
Theses Department: Department of Computer Science
Status: Not Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons open licence)
Date of first compliant deposit: 28 July 2016
Date of first compliant Open Access: 28 July 2016
Related URLs:
URI: https://wrap.warwick.ac.uk/61600/

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