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arXiv 2109.07133cs.RO
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结合情境感知和规划从示范中学习行为树

Combining Context Awareness and Planning to Learn Behavior Trees from Demonstration

KTH - Royal Institute of Technology(瑞典皇家理工学院);ABB Corporate Research(ABB集团研究院);ABB Robotics(ABB机器人部)

Oscar Gustavsson, Matteo Iovino, Jonathan Styrud, Christian Smith

摘要:

在不可预测的协作环境中快速变化的任务对于中小型公司来说是典型的,其中机器人应用程序正在增加。因此,机器人程序应该在短时间内产生小的努力,和机器人能够动态地对环境作出反应。为了解决这个问题,我们提出了一种结合上下文感知和规划来学习行为树(BTs)的方法,行为树是一种反应式策略表示,在机器人技术中越来越流行,并已成功地用于许多协作场景。上下文感知允许从演示中推断出执行动作的帧,并捕获任务的相关方面,而规划器用于从演示的动作序列自动生成BT。学习BT解决非平凡的操作任务,学习上下文是实现目标的基础。此外,我们收集了非专家的演示,以研究该算法在工业场景中的性能。

英文摘要:

Fast changing tasks in unpredictable, collaborative environments are typical for medium-small companies, where robotised applications are increasing. Thus, robot programs should be generated in short time with small effort, and the robot able to react dynamically to the environment. To address this we propose a method that combines context awareness and planning to learn Behavior Trees (BTs), a reactive policy representation that is becoming more popular in robotics and has been used successfully in many collaborative scenarios. Context awareness allows to infer from the demonstration the frames in which actions are executed and to capture relevant aspects of the task, while a planner is used to automatically generate the BT from the sequence of actions from the demonstration. The learned BT is shown to solve non-trivial manipulation tasks where learning the context is fundamental to achieve the goal. Moreover, we collected non-expert demonstrations to study the performances of the algorithm in industrial scenarios.

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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