AlphaStar Unplugged: Large-Scale Offline Reinforcement Learning

• URL: http://arxiv.org/abs/2308.03526v1
• Date: Mon, 7 Aug 2023 12:21:37 GMT
• Title: AlphaStar Unplugged: Large-Scale Offline Reinforcement Learning
• Authors: Micha\"el Mathieu, Sherjil Ozair, Srivatsan Srinivasan, Caglar Gulcehre, Shangtong Zhang, Ray Jiang, Tom Le Paine, Richard Powell, Konrad \.Zo{\l}na, Julian Schrittwieser, David Choi, Petko Georgiev, Daniel Toyama, Aja Huang, Roman Ring, Igor Babuschkin, Timo Ewalds, Mahyar Bordbar, Sarah Henderson, Sergio G\'omez Colmenarejo, A\"aron van den Oord, Wojciech Marian Czarnecki, Nando de Freitas, Oriol Vinyals
• Abstract summary: StarCraft II is one of the most challenging simulated reinforcement learning environments. Blizzard has released a massive dataset of millions of StarCraft II games played by human players. We define a dataset (a subset of Blizzard's release), tools standardizing an API for machine learning methods, and an evaluation protocol.
• Score: 38.75717733273262
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: StarCraft II is one of the most challenging simulated reinforcement learning environments; it is partially observable, stochastic, multi-agent, and mastering StarCraft II requires strategic planning over long time horizons with real-time low-level execution. It also has an active professional competitive scene. StarCraft II is uniquely suited for advancing offline RL algorithms, both because of its challenging nature and because Blizzard has released a massive dataset of millions of StarCraft II games played by human players. This paper leverages that and establishes a benchmark, called AlphaStar Unplugged, introducing unprecedented challenges for offline reinforcement learning. We define a dataset (a subset of Blizzard's release), tools standardizing an API for machine learning methods, and an evaluation protocol. We also present baseline agents, including behavior cloning, offline variants of actor-critic and MuZero. We improve the state of the art of agents using only offline data, and we achieve 90% win rate against previously published AlphaStar behavior cloning agent.

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