Optimal substructure of set-valued solutions of normal-form games and coordination |
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Authors: | Norimasa Kobayashi Kyoichi Kijima |
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Institution: | (1) Department of Value and Decision Science, Tokyo Institute of Technology, Tokyo 152-8550, Japan |
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Abstract: | A number of solution concepts of normal-form games have been proposed in the literature on subspaces of action profiles that
have Nash type stability. While the literature mainly focuses on the minimal of such stable subspaces, this paper argues that
non-minimal stable subspaces represent well the multi-agent situations to which neither Nash equilibrium nor rationalizability
may be applied with satisfaction. As a theoretical support, the authors prove the optimal substructure of stable subspaces
regarding the restriction of a game. It is further argued that the optimal substructure characterizes hierarchical diversity
of coordination and interim phases in learning. |
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Keywords: | Coordination curb set learning Nash equilibrium optimal substructure prep set rationalizability restriction retract |
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