发表机构
Sei Labs; University of Portsmouth(Sei Labs; 朴茨茅斯大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文证明在Komo-Kominers-Roughgarden模型中,单一公共拍卖可同时存在防托与非防托均衡,并通过三投标人单物品示例验证了两种均衡的共存及其预期收益。
AI 中文摘要
在Komo、Kominers和Roughgarden的模型中,单一拍卖可能同时存在防托均衡和非防托均衡。我们给出了一个明确的单物品示例,该示例具有三个投标人位置、公开可观察的行动、正的成交价格以及严格正则的独立同分布价值分布。真实投标人在两种均衡中都有严格激励。初始公开行动传达了关于最终位置是否为真实的信息。由此产生的信念改变了中间投标人的响应,并逆转了第一个托的两种行动之间的严格偏好。我们验证了这两种均衡并计算了它们的预期收益。
英文摘要
A single auction can have both a shill-proof equilibrium and a non-shill-proof equilibrium in the model of Komo, Kominers, and Roughgarden. We give an explicit single item example with three bidder positions, publicly observed actions, positive winning prices, and a strictly regular i.i.d.\ value distribution. Real bidders have strict incentives in both equilibria. An initial public action conveys information about whether the final position is real. The resulting belief changes the middle bidder's response and reverses the first shill's strict preference between two actions. We verify both equilibria and compute their expected revenues.