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Consistency, Monotonicity and Implementation of Egalitarian Shapley Values

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Author Info
René van den Brink () (VU University, Amsterdam)
Yukihiko Funaki () (Waseda University, Tokyo, Japan)
Yuan Ju () (Keele University, Keele, UK)

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Abstract

One of the main issues in economics is the trade-off between marginalism and egalitarianism. In the context of cooperative games this trade-off can be framed as one of choosing to allocate according to the Shapley value or the equal division solution. In this paper we provide tools that make it possible to study this trade-off in a consistent way by providing three types of results on egalitarian Shapley values being convex combinations of the Shapley value and the equal division solution. First, we show that all these solutions satisfy the same reduced game consistency. Second, we characterize this class of solutions using monotonicity properties. Finally, we provide a non-cooperative implementation for these solutions which only differ in the probability of breakdown at a certain stage of the game.

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Publisher Info
Paper provided by Tinbergen Institute in its series Tinbergen Institute Discussion Papers with number 07-062/1.

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Date of creation: 24 Aug 2007
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Handle: RePEc:dgr:uvatin:20070062

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Web page: http://www.tinbergen.nl/

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Related research
Keywords: Shapley value Equal division solution Egalitarian Shapley value Reduced Game Consistency Monotonicity Implementation

Find related papers by JEL classification:
C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
D60 - Microeconomics - - Welfare Economics - - - General

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  1. Hart, Sergiu & Mas-Colell, Andreu, 1996. "Bargaining and Value," Econometrica, Econometric Society, vol. 64(2), pages 357-80, March. [Downloadable!] (restricted)
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  2. (*), Gerard van der Laan & RenÊ van den Brink, 1998. "Axiomatizations of the normalized Banzhaf value and the Shapley value," Social Choice and Welfare, Springer, vol. 15(4), pages 567-582. [Downloadable!] (restricted)
  3. Ju, Y. & Borm, P.E.M. & Ruys, P.H.M., 2004. "The consensus value : a new solution concept for cooperative games," Discussion Paper 50, Tilburg University, Center for Economic Research. [Downloadable!]
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  4. Yuan Ju & David Wettstein, 2006. "Implementing Cooperative Solution Concepts: a Generalized Bidding Approach," Keele Economics Research Papers KERP 2006/06, Centre for Economic Research, Keele University. [Downloadable!]
    Other versions:
  5. Hart, Sergiu & Mas-Colell, Andreu, 1989. "Potential, Value, and Consistency," Econometrica, Econometric Society, vol. 57(3), pages 589-614, May. [Downloadable!] (restricted)
  6. René van den Brink & Yukihiko Funaki, 2004. "Axiomatizations of a Class of Equal Surplus Sharing Solutions for Cooperative Games with Transferable Utility," Tinbergen Institute Discussion Papers 04-136/1, Tinbergen Institute. [Downloadable!]
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