自動運転の戦術的意思決定における計画と深層強化学習の統合
Combining Planning and Deep Reinforcement Learning in Tactical Decision Making for Autonomous Driving
AlphaGo Zeroを連続状態空間に拡張し、モンテカルロ木探索と深層強化学習を組み合わせた自動運転の戦術的意思決定フレームワークを提案。高速道路のシミュレーションでベースラインを上回る性能を示した。
著者: Carl-Johan Hoel, Katherine Driggs-Campbell, Krister Wolff, Leo Laine, Mykel J. Kochenderfer
分類: cs.RO, cs.AI, cs.LG
原文アブストラクト
Tactical decision making for autonomous driving is challenging due to the diversity of environments, the uncertainty in the sensor information, and the complex interaction with other road users. This paper introduces a general framework for tactical decision making, which combines the concepts of planning and learning, in the form of Monte Carlo tree search and deep reinforcement learning. The method is based on the AlphaGo Zero algorithm, which is extended to a domain with a continuous state space where self-play cannot be used. The framework is applied to two different highway driving cases in a simulated environment and it is shown to perform better than a commonly used baseline method. The strength of combining planning and learning is also illustrated by a comparison to using the Monte Carlo tree search or the neural network policy separately.
