Cooperation and Incentives in Models with Asymmetric Information

不完全信息的分析对经济理论产生了深远的影响，特别是在非合作模型的背景下。然而，在信息不对称的情况下，合作理论还远未得到解决。这个项目将研究不对称信息下合作和激励的重要公开问题，着眼于拍卖和讨价还价等应用。由于个体激励的重要性，研究将在很大程度上依赖于非合作博弈论和机制设计的见解。当经济主体能够相互合作时，重要的是考虑不受自利集团或联盟引起的变化的经济分配。联盟稳定性的概念通常是通过被称为“核心”的一套分配来形式化的，这也与竞争市场理论有关。本课题研究的是信息不对称环境下的核心理论。当信息不对称的代理人联盟形成时，还不清楚他们之间将分享多少信息，因为隐藏一些信息可能符合他们的个人利益。本研究将分析在此背景下如何将联盟稳定性形式化。它将提供一种方法，使内生的信息池的数量在代理之间，并调查条件下的“核心”分配集是非空的。这项研究还将探讨如何设计非合作的分散机制，以实现社会期望的结果。该项目的成果将有助于更好地了解重要的社会、政治和经济现象，包括拍卖中的串通和在讨价还价问题上结成联盟。

The analysis of incomplete information has had a profound impact on economic theory, especially in the context of non-cooperative models. However, cooperative theory in the presence of asymmetric information is much less settled. This project will study important open problems of cooperation and incentives under asymmetric information, with an eye on applications such as auctions and bargaining. Due to the importance of individual incentives, the research will rely heavily on insights from non-cooperative game theory and mechanism design.When economic agents can cooperate with each other, it is important to consider economic allocations that are immune to changes induced by self-interested groups or coalitions. The idea of coalitional stability is typically formalized through the set of allocations known as the `core,' also connected with the theory of competitive markets. This project is concerned with the theory of the core in an environment with asymmetric information. When a coalition of asymmetrically informed agents forms, it is not clear how much information will be shared among them because it may be in their individual interest to hide some of it. The research will analyze how to formalize coalitional stability in this context. It will provide a way of making endogenous the amount of information pooling among agents, and investigate conditions under which the set of "core" allocations is non-empty. The research will also explore how non-cooperative decentralized mechanisms may be designed to implement socially desirable outcomes. The results of the project will lead to a better understanding of important social, political and economic phenomena, including collusion in auctions and coalition formation in problems of bargaining.