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arXiv 2107.08183cs.LG
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基于流基深度生成模型的最优层级同步分层强化学习

Hierarchical Reinforcement Learning with Optimal Level Synchronization Based on Flow-Based Deep Generative Model

University of Technology Sydney(悉尼科技大学)

JaeYoon Kim, Junyu Xuan, Christy Liang, Farookh Hussain

AI总结:

研究强化学习中高维状态等复杂场景,提出基于流基深度生成模型支持直接离策略校正的新型分层强化学习模型,利用模型逆操作与解决其局限性,经实验验证该模型性能优于现有模型。

摘要:

强化学习环境中高维状态和动作空间与稀疏奖励结构相结合,通常需要先进控制架构。分层强化学习(HRL)在此类场景中性能优于原子强化学习方法。其关键挑战之一是通过最优数据收集有效训练各层级策略。离策略校正对HRL中高效的离策略训练至关重要,但现有方法采用间接概率方法,无法准确捕捉下层策略当前能力,限制了上层策略训练效果。本文提出基于流基深度生成模型(FDGM)支持直接离策略校正的新型HRL模型,利用FDGM逆操作使目标与下层策略当前知识一致,还解决了FDGM局限性以在HRL中有效应用。通过在基准环境下对比实验,该模型性能优于现有模型。

英文摘要:

High-dimensional state and action spaces combined with sparse reward structures in reinforcement learning (RL) environments typically require advanced control architectures. Hierarchical Reinforcement Learning (HRL) demonstrates superior performance compared to atomic RL approaches in these challenging scenarios. HRL can manage the complexity of commands to achieve task objectives through its hierarchical structure. One of the key challenges in HRL is efficiently training each level's policy with optimal data collection from its experience. Off-policy correction is a critical technique for facilitating sample-efficient off-policy training in HRL, as it addresses the non-stationary issue of higher-level policy training. However, existing methods typically employ indirect probabilistic approaches that fail to accurately capture the current capability of the lower-level policy. This mismatch ultimately constrains the effectiveness of higher-level policy training. In this paper, we propose a novel HRL model that supports direct off-policy correction based on a Flow-based Deep Generative Model (FDGM). This approach leverages the inverse operation of FDGM to achieve goals aligned with the current knowledge of the lower-level policy. Additionally, our model addresses the limitations of FDGM to enable its effective use in HRL. Through comparative experiments on benchmark environments, our model demonstrates superior performance over existing models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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