演講者簡介 : Tilman Börgers got his Ph.D. in Economics from University of London in 1987. He is currently serving as Professor of Economics and Samuel Zell Professor of the Economics of Risk at University of Michigan. His research interest is in game theory, mechanism design, auctions, and voting.
演講摘要 : The paper introduces a notion of complementarity (substitutability) of two signals which requires that in all decision problems each signal becomes more (less) valuable when the other signal becomes available. We provide a general characterization which relates complementarity and substitutability to a Blackwell comparison of two auxiliary signals. In a setting with a binary state space and binary signals, we find an explicit characterization that permits an intuitive interpretation of complementarity and substitutability. We demonstrate how these conditions extend to more general settings.
