The One World Mathematical Game Theory Seminar is an international online seminar whose goal is keeping our research community connected, allowing people to regularly meet and exchange ideas.

This seminar is a part of One World Seminars, currently held in probability, PDEs,  Data  driven maths, Waves, Mathematical Methods for Arbitrary  Data Source (MADS),  IMAGing and INvErse problem (IMAGINE)  and Optimization.

The seminar takes place twice a month, on Mondays at 15:00  CEST.

To join the seminar’s mailing list, click here and fill the basic details. In case the link changes, we will send the new one by e-mail and post it on this page.

Please contact one of the organizers if you have an exciting project you would like to share with the community.

The organizers:

Xavier Venel, Ziv Hellman, Eilon Solan, János Flesch, Miklós Pintér, Galit Ashkenazi-Golan

June 12, 15:00 - 16:00 CEST,  Laura Doval, Columbia Business School and CEPR.

Title: Persuasion and Welfare       

Abstract: Information policies such as scores, ratings, and recommendations are increasingly shaping society's choices in high-stakes domains. We provide a framework to study the welfare implications of information policies on a population of heterogeneous individuals. We define and characterize the Bayes welfare set, consisting of the population's utility profiles that are feasible under some information policy. The Pareto frontier of this set can be recovered by a series of standard Bayesian persuasion problems, in which a utilitarian planner takes the role of the information designer. We provide necessary and sufficient conditions under which an information policy exists that Pareto dominates the no-information policy. We extend our results to the case in which information policies are restricted in the data they can use and show that "blinding" algorithms to sensitive inputs is welfare decreasing. We illustrate our results with applications to privacy, recommender systems, and credit ratings. 

Joint work with Alex Smolin (Toulouse School of Economics and CEPR)

Link to the paper (click here)

Calendar:

You can add the calendar with the list of the speaker for the year 2022/2023 to your google calendar by clicking there.

Past Talks (abstracts and videos):

• The list of past talk with links to the video can be found there or  there

• The list of past abstracts can be found there.

• The video of past talks can be found in our youtube channel.