时间：4月9日（周四）10:30 a.m.-12:00

地点：北京大学经济学院305

主持老师：吴泽南，石凡奇（经院）；胡岠（国发院）

参与老师：胡涛，吴泽南，石凡奇（经院）；汪浩，胡岠，邢亦青（国发院）；翁翕，刘烁（光华）

主讲人：Sanjeev Goyal（Arthur Pigou Professor of Economics and Fellow of Christ’s College, University of Cambridge）

题目: Robust Market Interventions

摘要：

When can interventions in markets be designed to increase surplus robustly—i.e., with high probability—accounting for uncertainty due to imprecise information about economic primitives? In a setting with many strategic firms, each possessing some market power, we present conditions for such interventions to exist. The key condition, significant structure, requires large-scale complementarities among families of products. The analysis works by decomposing the incidence of interventions in terms of principal components of a Slutsky matrix. Under significant structure, a noisy signal of this matrix reveals enough about these principal components to design robust interventions. Our results demonstrate the usefulness of spectral methods for analyzing imperfectly observed strategic interactions with many agents.

主讲人介绍：

Sanjeev Goyal is the Arthur Pigou Professor of Economics and Fellow of Christ’s College, Cambridge. He is best known for his pioneering research on networks. His research has appeared in leading journals such as Econometrica, Journal of Political Economy, Review of Economic Studies, American Economic Review, Comparative Political Studies, Symposium on Theory of Computing (STOC), PNAS, and Management Science. He is a Fellow of the British Academy, a Fellow of the Econometric Society, a Fellow of Society for the Advancement of Economic Theory, and a Fellow of the Game Theory Society. He was the Founding Director of the Cambridge-INET Institute (renamed Janeway Institute) 2012-2014, and Chair of the Economics Faculty at Cambridge 2014-2018.