arXiv:2606.08297econ.THcs.CL2026-06被引 3

为不完全信息博弈构建可计算最优反应的最小信息结构。

Strategic Type Spaces

  • 用贝叶斯信念层级定义玩家类型,实现最优策略推理
  • 证明最小战略类型空间存在且唯一,具有递归结构
  • 适合研究博弈论中信息建模与理性决策的学者

在任意不完全信息博弈中,我们提出了战略商数作为信息表示,使玩家能够计算对其他参与者的最优反应。我们证明:1)存在且本质唯一一个最小战略商数,称为战略类型空间(STS),其中每个类型由一个中期相关理性化层级定义,代表对其他玩家类型和自然状态的信念集合,这些信念可合理化该层级;2)最小的STS具有递归结构,可用有限自动机刻画。

原文摘要 · Abstract (English)

We provide a strategic foundation for information: in any given game with incomplete information we define strategic quotients as information representations that are sufficient for players to compute best-responses to other players. We prove 1/ existence and essential uniqueness of a minimal strategic quotient called the Strategic Type Space (STS) in which a type is given by an interim correlated rationalizability hierarchy and represents a set of beliefs over other players' types and nature that rationalize this hierarchy and 2/ that the minimal STS has a recursive structure that is captured by a finite automaton.

博弈论信息模型理性化

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