Collinearity between the Shapley value and the egalitarian division rules for cooperative games

Collinearity between the Shapley value and the egalitarian division rules for cooperative games

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Article ID: iaor19972448
Country: Germany
Volume: 18
Issue: 2
Start Page Number: 97
End Page Number: 105
Publication Date: Apr 1996
Journal: OR Spektrum
Authors: , ,
Abstract:

For each cooperative n-person game v and each equ1, let equ2 be the average worth of coalitions of size equ3 and equ4 the average worth of coalitions of size h which do not contain player equ5 The paper introduces the notion of a proportional average worth game (or PAW-game), i.e., the zero-normalized game v for which there exist numbers equ6 such that equ7 for all equ8, and equ9. The notion of average worth is used to prove a formula for the Shapley value of a PAW-game. It is shown that the Shapley value, the value representing the center of the imputation set, the egalitarian non-separable contribution value and the egalitarian non-separable contribution value and the egalitarian non-average contribution value of a PAW-game are collinear. The class of PAW-games contains strictly the class of k-coalitional games possessing the collinearity property discussed by Driessen and Funaki. Finally, it is illustrated that the unanimity games and the landlord games are PAW-games.

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