Christos A. Ioannou

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Short Bio
I am a Full Professor (Professeur des Universités) in Economics at the University Paris 1 Panthéon-Sorbonne and a Research Fellow at the Centre d’Economie de la Sorbonne (since 2019). I graduated in 2009 with a Ph.D in Economics from the University of Minnesota under the supervision of Aldo Rustichini. Since 2021, I am also a member in the Council of the Cyprus Agency of Quality Assurance & Acceditation in Higher Education.

I am an applied game theorist interested in modelling economic behavior; in particular, I am intrigued by the study of behavior that deviates from perfect rationality. I thus employ experiments to collect data, which I analyze to better understand (and model) economic decision-making. Over the years, my research interests have spanned from an analysis and modelling of behavior in repeated games to that in prediction markets.

New Research
Data Mining in Repeated Games coauthored with Laurent Mathevet, Julian Romero and Huanren Zhang develops two pattern-mining methods to study learning within a repeated game. Our first approach, the action-convergence criterion, documents properties of the long run, especially in contrast to the short run, by imposing a bound on the mismatches over the evaluation period. We find that there is more stability, more efficiency, and more equality at the end of play than at the beginning. Moreover, complex agreements require time. The second approach, a modified version of the k-means clustering algorithm, records the match quality of patterns throughout the entire sequence to determine the progression of game play. The storylines detected span from very easy cooperation/coordination to noisy attempts (sometimes successful) to attain Nash/efficient/egalitarian profiles.

AAPG2021 Projet de Recherche Collaborative (PRC)
I was awarded in 2022 a grant from the Agence Nationale de la Recherche (ANR) in France to work on a project titled Bounded Rationality in Prediction Markets. More information on this project and the workshop in Paris can be found here.

The website was updated on February 10, 2025