AIBullisharXiv – CS AI · 8h ago7/10
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Imagine to Ensure Safety in Hierarchical Reinforcement Learning
Researchers propose a hierarchical reinforcement learning method that combines learned world models with dual-level policies to enable safe exploration in long-horizon tasks. The approach uses high-level subgoals to guide exploration toward safe regions and low-level imagined rollouts to minimize unsafe behaviors, demonstrating significant improvements over existing Safe RL baselines on complex navigation and manipulation tasks.