Optimal Allocation with Costly Verification
研究委托人如何将物品分配给多个代理人，代理人拥有私人信息，委托人可以付费验证信息，最优机制是随机化选择最优的偏爱代理人机制。
A principal allocates an object to one of I agents. Each agent values receiving the object and has private information regarding the value to the principal of giving it to him. There are no monetary transfers, but the principal can check an agent’s information at a cost. A favored-agent mechanism specifies a value v* and an agent i*. If all agents other than i* report values below v*, then i* receives the good and no one is checked. Otherwise, whoever reports the highest value is checked and receives the good if and only if her report is confirmed. All optimal mechanisms are essentially randomizations over optimal favored-agent mechanisms.