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Scalable Multi-Agent Reinforcement Learning for Networked Systems with Average Reward
Guannan Qu · Yiheng Lin · Adam Wierman · Na Li

Tue Dec 08 09:00 PM -- 11:00 PM (PST) @ Poster Session 2 #579

It has long been recognized that multi-agent reinforcement learning (MARL) faces significant scalability issues due to the fact that the size of the state and action spaces are exponentially large in the number of agents. In this paper, we identify a rich class of networked MARL problems where the model exhibits a local dependence structure that allows it to be solved in a scalable manner. Specifically, we propose a Scalable Actor-Critic (SAC) method that can learn a near optimal localized policy for optimizing the average reward with complexity scaling with the state-action space size of local neighborhoods, as opposed to the entire network. Our result centers around identifying and exploiting an exponential decay property that ensures the effect of agents on each other decays exponentially fast in their graph distance.

Author Information

Guannan Qu (California Institute of Technology)
Yiheng Lin (California Institute of Technology)
Adam Wierman (California Institute of Technology)
Na Li (Harvard University)

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