Skip to yearly menu bar Skip to main content


Poster

Bandit Learning in Concave N-Person Games

Mario Bravo · David Leslie · Panayotis Mertikopoulos

Room 210 #83

Keywords: [ Game Theory and Computational Economics ] [ Learning Theory ] [ Bandit Algorithms ]


Abstract:

This paper examines the long-run behavior of learning with bandit feedback in non-cooperative concave games. The bandit framework accounts for extremely low-information environments where the agents may not even know they are playing a game; as such, the agents’ most sensible choice in this setting would be to employ a no-regret learning algorithm. In general, this does not mean that the players' behavior stabilizes in the long run: no-regret learning may lead to cycles, even with perfect gradient information. However, if a standard monotonicity condition is satisfied, our analysis shows that no-regret learning based on mirror descent with bandit feedback converges to Nash equilibrium with probability 1. We also derive an upper bound for the convergence rate of the process that nearly matches the best attainable rate for single-agent bandit stochastic optimization.

Live content is unavailable. Log in and register to view live content