減衰残差方策最適化による実世界自動運転レースの効率化
Efficient Real-World Autonomous Racing via Attenuated Residual Policy Optimization
残差方策学習を拡張し、ベース方策を徐々に減衰させて単独のニューラル方策を得る手法を提案し、1/10スケールの自動運転レースでシミュレーションと実機の両方で性能を向上させた。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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著者: Raphael Trumpp, Denis Hoornaert, Mirco Theile, Marco Caccamo
分類: cs.RO, cs.AI
原文アブストラクト
Residual policy learning (RPL), in which a learned policy refines a static base policy using deep reinforcement learning (DRL), has shown strong performance across various robotic applications. Its effectiveness is particularly evident in autonomous racing, a domain that serves as a challenging benchmark for real-world DRL. However, deploying RPL-based controllers introduces system complexity and increases inference latency. We address this by introducing an extension of RPL named attenuated residual policy optimization ($\alpha$-RPO). Unlike standard RPL, $\alpha$-RPO yields a standalone neural policy by progressively attenuating the base policy, which initially serves to bootstrap learning. Furthermore, this mechanism enables a form of privileged learning, where the base policy is permitted to use sensor modalities not required for final deployment. We design $\alpha$-RPO to integrate seamlessly with PPO, ensuring that the attenuated influence of the base controller is dynamically compensated during policy optimization. We evaluate $\alpha$-RPO by building a framework for 1:10-scaled autonomous racing around it. In both simulation and zero-shot real-world transfer to Roboracer cars, $\alpha$-RPO not only reduces system complexity but also improves driving performance compared to baselines - demonstrating its practicality for robotic deployment. Our code is available at: https://github.com/raphajaner/arpo_racing.
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