Efficient Combinatorial Exchanges with Opt-Out Types
We investigate combinatorial exchanges as a generalization of auctions and bilateral trades, where multiple heterogeneous commodities are initially possessed not only by a central planner but also by participants. We assume private values, quasi-linearity, risk neutrality, and independent type distribution. Efficiency, Bayesian Incentive Compatibility, and Interim Individual Rationality in a type-dependent manner are required. We introduce a stability notion in the ex-ante term, namely marginal core. By assuming the presence of opt-out types for each player, we show a full characterization in that the central planner inevitably has a deficit if and only if the marginal core is non-empty.
|Date of creation:||Nov 2011|
|Date of revision:||Aug 2012|
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- Sushil Bikhchandani & Shurojit Chatterji & Ron Lavi & Ahuva Mu'alem & Noam Nisan & Arunava Sen, 2006. "Weak Monotonicity Characterizes Deterministic Dominant-Strategy Implementation," Econometrica, Econometric Society, vol. 74(4), pages 1109-1132, 07.
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