arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2312.02419cs.RO
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人类演示是机器人的可泛化知识

Human Demonstrations are Generalizable Knowledge for Robots

School of Automation, Beijing Institute of Technology, Beijing, 100081, China(自动化学院,北京理工大学,北京,100081,中国);Beijing Zhongguancun Academy, Beijing, 100094, China(中关村学院,北京,100094,中国)

Te Cui, Tianxing Zhou, Zicai Peng, Mengxiao Hu, Haoyang Lu, Haizhou Li, Guangyan Chen, Meiling Wang, Yufeng Yue

AI总结:

本文提出DigKnow方法,将人类演示视频蒸馏为层次化可泛化知识,并结合大语言模型规划器检索知识进行规划与执行,从而提升机器人在不同任务和物体实例上的成功率。

摘要:

从人类演示中学习是设计智能机器人系统的新兴趋势。然而,以往的方法通常将视频视为指令,简单地将其划分为动作序列供机器人重复执行,这对泛化到多样化任务或物体实例构成了障碍。在本文中,我们提出了一种不同的视角,认为人类演示视频不仅仅是指令,而是机器人的知识来源。受这一视角以及大语言模型(LLMs)所展现出的卓越理解与泛化能力的启发,我们提出了DigKnow,一种以层次化结构蒸馏可泛化知识的方法。具体而言,DigKnow首先将人类演示视频帧转换为观测知识。随后对这些知识进行分析,以提取人类动作知识,并进一步蒸馏为涵盖任务和物体实例的模式知识,从而获得具有层次化结构的可泛化知识。在不同任务或物体实例的设置下,DigKnow检索与当前任务和物体实例相关的知识。接着,基于大语言模型的规划器根据检索到的知识进行规划,策略按照计划执行动作以完成指定任务。利用检索到的知识,我们验证并纠正规划与执行结果,从而显著提升成功率。在一系列任务和场景中的实验结果表明,该方法能够有效帮助真实世界机器人利用从人类演示中获取的知识完成任务。

英文摘要:

Learning from human demonstrations is an emerging trend for designing intelligent robotic systems. However, previous methods typically regard videos as instructions, simply dividing them into action sequences for robotic repetition, which poses obstacles to generalization to diverse tasks or object instances. In this paper, we propose a different perspective, considering human demonstration videos not as mere instructions, but as a source of knowledge for robots. Motivated by this perspective and the remarkable comprehension and generalization capabilities exhibited by large language models (LLMs), we propose DigKnow, a method that DIstills Generalizable KNOWledge with a hierarchical structure. Specifically, DigKnow begins by converting human demonstration video frames into observation knowledge. This knowledge is then subjected to analysis to extract human action knowledge and further distilled into pattern knowledge compassing task and object instances, resulting in the acquisition of generalizable knowledge with a hierarchical structure. In settings with different tasks or object instances, DigKnow retrieves relevant knowledge for the current task and object instances. Subsequently, the LLM-based planner conducts planning based on the retrieved knowledge, and the policy executes actions in line with the plan to achieve the designated task. Utilizing the retrieved knowledge, we validate and rectify planning and execution outcomes, resulting in a substantial enhancement of the success rate. Experimental results across a range of tasks and scenes demonstrate the effectiveness of this approach in facilitating real-world robots to accomplish tasks with the knowledge derived from human demonstrations.

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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