In plain words: They study games by simulating matches among a small set of strategies and solving the smaller game, proving its equilibrium stays close to the real one and how many simulations are needed. It also handles players with different strategy sets, not just interchangeable ones.
Abstract · A Generalised Method for Empirical Game Theoretic Analysis
This paper provides theoretical bounds for empirical game theoretical analysis of complex multi-agent interactions. We provide insights in the empirical meta game showing that a Nash equilibrium of the meta-game is an approximate Nash equilibrium of the true underlying game. We investigate and show how many data samples are required to obtain a close enough approximation of the underlying game. Additionally, we extend the meta-game analysis methodology to asymmetric games. The state-of-the-art has only considered empirical games in which agents have access to the same strategy sets and the payoff structure is symmetric, implying that agents are interchangeable. Finally, we carry out an empirical illustration of the generalised method in several domains, illustrating the theory and evolutionary dynamics of several versions of the AlphaGo algorithm (symmetric), the dynamics of the Colonel Blotto game played by human players on Facebook (symmetric), and an example of a meta-game in Leduc Poker (asymmetric), generated by the PSRO multi-agent learning algorithm.
Karl Tuyls, Julien Perolat, Marc Lanctot, Joel Z Leibo, Thore Graepel
arXiv:1803.06376 · cs.GT, cs.MA · submitted Mar 16, 2018
abstract · pdf · html · will appear at AAMAS'18