Blackwell's informativeness theorem using diagrams

• 成果类型: Article
• 署名作者: de Oliveira, Henrique
• 署名单位: Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
• 刊物名称: GAMES AND ECONOMIC BEHAVIOR
• ISSN/ISSBN: 0899-8256
• DOI: 10.1016/j.geb.2017.12.008
• 发表日期: 2018
• 页码: 126-131
• 关键词: Blackwell's theorem; INFORMATION; garbling; Category theory

摘要

This paper gives a simple proof of Blackwell's theorem on the ranking of information structures. The proof extends naturally to environments where information arrives over time (leading to the notion of adapted garbling) and environments where information is diffused among multiple players (leading to the notion of independent garbling). (C) 2017 Elsevier Inc. All rights reserved.