Biography
Iosif (Joseph) Sakos received his BCS (2018) and MSc (2019) from the Athens University of Economics and Business (AUEB), Greece. He joined the Singapore University of Technology and Design for an internship (Summer 2019) under the supervision of Prof. Costas Courcoubetis, and in 2024, he received his Ph.D. from Engineering Systems and Design, SUTD. His research interests include dynamics of non-cooperative non-concave games, equilibrium selection, strategic multi-agent system identification and control, non-convex optimization, and large-scale semidefinite programming.
Education
- PhD, Singapore University of Technology and Design, 2024
- MSc, Athens University of Economics and Business, 2019
- BCS, Athens University of Economics and Business, 2018
Research Interest
- Dynamics of non-cooperative non-concave games
- Equilibrium selection
- Strategic multi-agent system identification and control
- Non-convex optimization
- Large-scale semidefinite programming
Selected Publications
- I. Sakos, A. Varvistiotis, G. Piliouras. “Data-Scarce Identification of Game Dynamics via Sum-of-Squares Optimization”. WINE 2024. https://arxiv.org/abs/2307.06640
- I. Sakos, S. Leonardos, S. A. Stavroulakis, W. Overman, I. Panageas, G. Piliouras. “Beating Price of Anarchy and Gradient Descent without Regret in Potential Games”. ICLR 2024. https://openreview.net/forum?id=36L7W3ri4U¬eId=R7UbfC64jj
- I. Sakos, E.V. Vlatakis-Gkaragkounis, P. Mertikopoulos, G. Piliouras. “Exploiting Hidden Structures in Non-Convex Games for Convergence to Nash Equilibrium”. NeurIPS 2023. https://openreview.net/forum?id=05P1U0jk8r¬eId=PE9SVR0B89
- S. Leonardos, J. Sakos, C. Courcoubetis, G. Piliouras. “Catastrophe by Design in Population Games: A Mechanism to Destabilize Inefficient Locked-in Technologies”. ACM, TEAC, Volume 11, 2023 (Featured Article). https://doi.org/10.1145/3583782
- A. Mladenovic, I. Sakos, G. Gidel, G. Piliouras. “Generalized Natural Gradient Flows in Hidden Convex-Concave Games and GANs”. ICLR 2022. https://openreview.net/forum?id=bsycpMi00R1