Spectrum value for coalitional games

Álvarez-Mozos, M. and Hellman, Z. and Winter, E. (2013) Spectrum value for coalitional games. Games and Economic Behavior, 82. pp. 132-142. ISSN 0899-8256

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Abstract

Assuming a 'spectrum' or ordering of the players of a coalitional game, as in a political spectrum in a parliamentary situation, we consider a variation of the Shapley value in which coalitions may only be formed if they are connected with respect to the spectrum. This results in a naturally asymmetric power index in which positioning along the spectrum is critical. We present both a characterization of this value by means of properties and combinatoric formulae for calculating it. In simple majority games, the greatest power accrues to 'moderate' players who are located neither at the extremes of the spectrum nor in its center. In supermajority games, power increasingly accrues towards the extremes, and in unanimity games all power is held by the players at the extreme of the spectrum. © 2013 Elsevier Inc.

Item Type:
Journal Article
Journal or Publication Title:
Games and Economic Behavior
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2000/2002
Subjects:
ID Code:
126912
Deposited By:
Deposited On:
14 Aug 2018 14:08
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Sep 2020 05:10