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Andreas Kontogiannis

3 accepted papers

2025

Efficient Kernelized Learning in Polyhedral Games beyond Full Information: From Colonel Blotto to Congestion Games

NeurIPS 2025poster

We examine the problem of efficiently learning coarse correlated equilibria (CCE) in polyhedral games, that is, normal-form games with an exponentially large number of actions per player and an underlying combinatorial structure—such as the classic Colonel Blotto game or congestion games. Achieving…

Cited by 0SourceScholar
2025

Enhancing Cooperative Multi-Agent Reinforcement Learning with State Modelling and Adversarial Exploration

ICML 2025poster

Learning to cooperate in distributed partially observable environments with no communication abilities poses significant challenges for multi-agent deep reinforcement learning (MARL). This paper addresses key concerns in this domain, focusing on inferring state representations from individual agent…

2024

The Computational Complexity of Finding Second-Order Stationary Points

ICML 2024poster

Non-convex minimization problems are universally considered hard, and even guaranteeing that a computed solution is locally minimizing is known to be NP-hard. In this general context, our paper focuses on the problem of finding stationary points that satisfy an approximate second-order optimality co…

Cited by 1SourcePDFScholar