Multi-agent Reinforcement Learning for Networked System Control

Tianshu Chu, Sandeep Chinchali, Sachin Katti

Keywords: deep reinforcement learning, multi-agent reinforcement learning, decision and control

TL;DR: This paper proposes a new formulation and a new communication protocol for networked multi-agent control problems

Abstract: This paper considers multi-agent reinforcement learning (MARL) in networked system control. Specifically, each agent learns a decentralized control policy based on local observations and messages from connected neighbors. We formulate such a networked MARL (NMARL) problem as a spatiotemporal Markov decision process and introduce a spatial discount factor to stabilize the training of each local agent. Further, we propose a new differentiable communication protocol, called NeurComm, to reduce information loss and non-stationarity in NMARL. Based on experiments in realistic NMARL scenarios of adaptive traffic signal control and cooperative adaptive cruise control, an appropriate spatial discount factor effectively enhances the learning curves of non-communicative MARL algorithms, while NeurComm outperforms existing communication protocols in both learning efficiency and control performance.

Code: https://github.com/cts198859/deeprl_network

Community Implementations: [ 1 code implementation](https://www.catalyzex.com/paper/arxiv:2004.01339/code)