【Micro Seminar】Axiomatizing Correlation Preference: A Structure Theorem
2025/12/09
研討會日期 : 2025-12-09
時間 : 10:30
主講人 : Professor Yi-Chun Chen (陳逸羣)
地點 : Conference Room B110
主持人 : Professor Meng-Yu Liang
演講者簡介 : Professor Yi-Chun Chen received his Ph.D. in Economics from Northwestern University in 2009. He is currently a Professor at the National University of Singapore. His research interests are Game Theory and Mechanism Design.
演講摘要 : We study preferences over lotteries that satisfy completeness and betweenness, allowing the decision maker (DM) to be sensitive to correlation between lotteries. We prove a structure theorem for correlation preferences: the DM is either correlation-insensitive in comparing every pair of lotteries or correlation-sensitive in comparing almost every pair of lotteries. In the former case, the DM's preference is represented by a skew-symmetric bilinear (SSB) form (Fishburn, 1982), and in the latter case, it is a sum of the SSB representation and the correlation-sensitive representation of Lanzani (2022), which includes regret theory and salience theory. We obtain the axiomatization and structure theorem for betweenness correlation preferences by leveraging their convex structure via a network-flow approach.
