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arXiv 2306.03346cs.LGcs.AI
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稳定对比强化学习:基于离线数据实现机器人目标到达的技术

Stabilizing Contrastive RL: Techniques for Robotic Goal Reaching from Offline Data

Carnegie Mellon University(卡内基梅隆大学);Princeton University(普林斯顿大学);UC Berkeley(加州大学伯克利分校);University of Washington(华盛顿大学);Cornell University(康奈尔大学)

Chongyi Zheng, Benjamin Eysenbach, Homer Walke, Patrick Yin, Kuan Fang, Ruslan Salakhutdinov, Sergey Levine

AI总结:

本文研究自监督强化学习在真实机器人上的部署难题,通过仿真分析架构与超参数选择,将成功率提升2倍,并证明基于对比学习的方法可仅凭单张目标图像完成真实图像操作任务。

摘要:

主要依赖自监督学习的机器人系统有望减少学习控制策略所需的人工标注和工程工作量。正如以往机器人系统利用来自计算机视觉(CV)和自然语言处理(NLP)的自监督技术一样,我们的工作建立在先前研究的基础上:这些研究表明,强化学习(RL)本身可以被表述为一个自监督问题,即学习到达任意目标,而无需人工指定的奖励或标签。尽管这一思路看似具有吸引力,但此前几乎没有(如果有的话)工作证明自监督 RL 方法如何能够实际部署到机器人系统上。通过首先研究该任务的一个具有挑战性的仿真版本,我们发现了关于架构和超参数的设计决策,可将成功率提高 2 倍。这些发现为我们的主要结果奠定了基础:我们证明,一种基于对比学习的自监督 RL 算法能够解决真实世界中基于图像的机器人操作任务,并且任务由训练后提供的单张目标图像指定。

英文摘要:

Robotic systems that rely primarily on self-supervised learning have the potential to decrease the amount of human annotation and engineering effort required to learn control strategies. In the same way that prior robotic systems have leveraged self-supervised techniques from computer vision (CV) and natural language processing (NLP), our work builds on prior work showing that the reinforcement learning (RL) itself can be cast as a self-supervised problem: learning to reach any goal without human-specified rewards or labels. Despite the seeming appeal, little (if any) prior work has demonstrated how self-supervised RL methods can be practically deployed on robotic systems. By first studying a challenging simulated version of this task, we discover design decisions about architectures and hyperparameters that increase the success rate by $2 \times$. These findings lay the groundwork for our main result: we demonstrate that a self-supervised RL algorithm based on contrastive learning can solve real-world, image-based robotic manipulation tasks, with tasks being specified by a single goal image provided after training.

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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