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- W3125514441 abstract "Aumann (1987)'s theorem shows that correlated is an expression of Bayesian rationality. We extend this result to games with incomplete information. First, we rely on Harsanyi (1967)'s model and represent the underlying multiperson decision problem as a fixed game with imperfect information. We survey four definitions of correlated which have appeared in the literature. We show that these definitions are not equivalent to each other. We prove that one of them fits Aumann's framework; the agents normal form correlated equilibrium is an expression of Bayesian rationality in games with incomplete information. We also follow a Bayesian approach based on Mertens and Zamir (1985)'s construction of the beliefs space. Hierarchies of beliefs over independent variables (states of nature) and dependent variables (actions) are then constructed simultaneously. We establish that the universal set of Bayesian solutions satisfies another extension of Aumann's theorem. We get the following corollary : once the types of the players are not fixed by the model, the various definitions of correlated previously considered are equivalent." @default.
- W3125514441 created "2021-02-01" @default.
- W3125514441 creator A5021046780 @default.
- W3125514441 date "1993-03-01" @default.
- W3125514441 modified "2023-09-27" @default.
- W3125514441 title "Five Legitimate Definitions of Correlated Equilibrium in Games with Incomplete Information" @default.
- W3125514441 hasPublicationYear "1993" @default.
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