Optimal information structures in bilateral trade
研究在双边贸易中如何设计信息结构和交易机制来最大化预期贸易收益，发现最优信息结构能显著缩小信息不对称造成的效率损失，对二进制类型可实现超过95%的最优效率。
With the goal of maximizing expected gains from trade, this paper analyzes the jointly optimal information structure and mechanism in a bilateral trade setting. The difference in gains from trade between the optimal information structure and first best constitutes the minimal loss due to asymmetric information. With binary underlying types it is shown that more than 95% of first best can be achieved while the optimal mechanism without information design may achieve less than 90% of first best. For more general type distributions, the optimal information structure is a monotone partition of the type space and the optimal mechanism is deterministic. Necessary conditions for the optimal information structure are derived and a closed form solution is given for the binary type case.