【Micro Seminar】Grand Mechanism and Population Uncertainty

  • 研討會日期 : 2023-02-14
  • 時間 : 14:30
  • 主講人 : Professor Seung Han Yoo
  • 地點 : Conference room B110
  • 主持人 : Professor Kong-Pin Chen
  • 演講者簡介 : Professor Seung Han Yoo received his Ph.D. in Economics from Cornell University in 2005. He is currently a Professor at Korea University. His research interests are Microeconomic Theory, Game Theory, and Political Economy.
  • 演講摘要 : This paper studies an informed mechanism designer problem in which the principal’s private information is a number of agents. The principal designs both a protocol structure with respect to how to reveal the information and a collection of sub-mechanisms. The former is a mapping from numbers of agents to probability distributions over information revelation rules, and the latter’s different sub-mechanisms may contain different allocation and payment functions depending on the principal’s private information as well as a rule. Since choosing a protocol structure and such a collection are interwoven, we establish the existence of the grand mechanism using an expected payoff linearity. Then, we first show that there is a single threshold for the optimal grand mechanism if a sub-mechanism cannot depend on the principal’s private information. Interestingly, the main result shows that if a sub-mechanism can also depend on his private information, the optimal grand mechanism is characterized by double thresholds such that the principal does not announce the number of agents if it is in the middle range. We further extend the protocol structure to include rich sets of rules.