T3S: タスク固有特徴セレクタとスケジューラによるマルチタスク強化学習の改善
T3S: Improving Multi-Task Reinforcement Learning with Task-Specific Feature Selector and Scheduler
マルチタスク強化学習におけるタスク間干渉を解決するため、ハイパーネットワークでタスク固有のソフトマスクを生成する特徴セレクタと、タスクの進捗と学習速度に基づいて学習タスクを選択するスケジューラを提案した。ロボット操作タスクで既存手法より優れた性能を示した。
詳しい要約
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著者: Yuanqiang Yu, Tianpei Yang, Yongliang Lv, Yan Zheng, Jianye Hao
分類: cs.LG
原文アブストラクト
Multi-task reinforcement learning (MTRL) is a technique to train multiple tasks simultaneously, where previous works usually train a single model to solve different tasks by sharing parameters across various tasks. However, these methods are faced with inter-task interference since what parameters should be shared across tasks is not addressed, dramatically reducing learning efficiency. To solve these problems, we propose a novel MTRL framework called Task-Specific feature Selector and Scheduler (T3S), which consists of two components: a feature selector and a task scheduler. Specifically, the feature selectors employ hypernetworks to construct task-specific soft masks, which can be applied by globally shared representation to construct task-specific features. The task scheduler selects tasks for learning through two metrics, where the selection probability is inversely proportional to task progress (e.g., success rate) and task learning speed. Experimental results show that T3S consistently outperforms the state-of-the-art MTRL algorithms on various robotics manipulation tasks.