Wiley Encyclopedia of Operations Research and Management Science 2011
DOI: 10.1002/9780470400531.eorms0669
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Power Indices

Abstract: This paper deals with simple games, that is a voting situation in which a single alternative, such as a bill or amendment, is pitted against the status quo. In these systems, each voter responds with a vote “yea” or “nay.” A simple game is simply a set of rules that specifies exactly which collections of “yea” votes yield passage of the issue at hand. After studying a little the mathematical structure of simple games, we proceed to introduce power, which is a central concept in political sciences. We revise so… Show more

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Cited by 6 publications
(3 citation statements)
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“…The most conspicuous representatives of this line of research are the Shapley-Shubik (Shapley and Shubik, 1954) and the Banzhaf-Coleman (Penrose, 1946;Banzhaf III, 1964;Coleman, 1971;Owen, 1975;Moshe'Machover Dan, 1998) power indices. A survey about power indices can be found in (Freixas, 2010).…”
Section: Introductionmentioning
confidence: 99%
“…The most conspicuous representatives of this line of research are the Shapley-Shubik (Shapley and Shubik, 1954) and the Banzhaf-Coleman (Penrose, 1946;Banzhaf III, 1964;Coleman, 1971;Owen, 1975;Moshe'Machover Dan, 1998) power indices. A survey about power indices can be found in (Freixas, 2010).…”
Section: Introductionmentioning
confidence: 99%
“…Under this interpretation, we show that the satisfaction measure coincides with the Rae index and that the power measure is twice the Banzhaf value. Therefore, according to the use of the Banzhaf value in game theory, we get a natural justification of the use of satisfaction or power as measures for leadership [13].…”
Section: Introductionmentioning
confidence: 99%
“…The second one is similar to Banzhaf index, but only considering the swings that are MWCs. For an overview about them, see [81,88,4,22]. Now we concentrate on the most common solution concepts based on the stability criterion.…”
Section: Solution Conceptsmentioning
confidence: 99%