Abstract
In this article, we generalize the position value, defined by Meessen (Master’s thesis, 1988) for the class of deterministic communication situations, to the class of generalized probabilistic communication situations (Gómez et al. in European Journal of Operational Research 190:539–556, 2008). We provide two characterizations of this new allocation rule. Following in Slikker’s (International Journal of Game Theory 33:505–514, 2005a) footsteps, we characterize the probabilistic position value using probabilistic versions of component efficiency and balanced link contributions. Then we generalize the notion of link potential, defined by Slikker (International Game Theory Review 7:473–489, 2005b) for the class of deterministic communication situations, to the class of generalized probabilistic communication situations, and use it to characterize our allocation rule.
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Notes
Observe that \(r_{\gamma}^{v}(\emptyset)=0\) because of the zero normalization of (N,v).
For communication situations where (N, v) is not zero-normalized, the position value of a player is defined as the sum of his individual value and his position value in the communication situation (N, w, γ), where (N, w) is the zero-normalization of (N, v), i.e. w(S)=v(S)−∑ i∈S v({i}) for each S⊂N. Our results hold for this more general setting, but to keep the notation simple, we restrict ourselves to zero-normalized games.
In a natural way, we denote by G p and \(G^{{\gamma}_{p}}\) the linear vector spaces of games with players sets p and γ p respectively.
Recall that N={1, …, n}.
References
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This research has been partially supported by the Plan Nacional de I+D+i of the Spanish Government, under the project MTM2008-06778-C02-02/MTM and by the OTKA (Hungarian Fund for Scientific Research) under the project ‘The strong, the Weak and the Cunning: Power and Strategy in Voting Games”. Authors would like to thank Sylvain Béal, Marc Fleurbaey, Guillaume Haeringer, Agnieszka Rusinowska, Philippe Solal and two anonymous referees for helpful comments and suggestions.
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Ghintran, A., González-Arangüena, E. & Manuel, C. A probabilistic position value. Ann Oper Res 201, 183–196 (2012). https://doi.org/10.1007/s10479-012-1195-1
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DOI: https://doi.org/10.1007/s10479-012-1195-1