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arXiv 1204.0280cs.RO
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基于POMDP的人机任务通信框架

Framing Human-Robot Task Communication as a POMDP

Harvard University(哈佛大学)

Mark P. Woodward, Robert J. Wood

摘要:

随着通用机器人的能力越来越强,在工厂对所有任务进行预编程将变得不那么实际。我们希望非技术人员能够通过与他们的机器人进行交互来交流新任务的细节;我们称这种交互为“任务通信”。在任务通信过程中,机器人必须从非结构化的人类信号中推断出任务的细节,并且必须选择促进这种推断的动作。在本文中,我们提出使用部分可观察马尔可夫决策过程(POMDP)来表示任务通信问题;在状态中捕获的人类教师的不可观察的任务细节和不可观察的意图,来自人类的所有信号表示为观察,并选择成本函数来惩罚不确定性。我们的工作通过一个示例表示的任务通信作为POMDP,并从用户实验的交互式虚拟机器人,与人类控制的虚拟机器人相比,涉及一个单一的对象运动和二进制批准输入的任务,从教师的结果。结果表明,建议POMDP表示产生的机器人是强大的教师错误,可以准确地推断任务的细节,并认为是智能的。

英文摘要:

As general purpose robots become more capable, pre-programming of all tasks at the factory will become less practical. We would like for non-technical human owners to be able to communicate, through interaction with their robot, the details of a new task; we call this interaction "task communication". During task communication the robot must infer the details of the task from unstructured human signals and it must choose actions that facilitate this inference. In this paper we propose the use of a partially observable Markov decision process (POMDP) for representing the task communication problem; with the unobservable task details and unobservable intentions of the human teacher captured in the state, with all signals from the human represented as observations, and with the cost function chosen to penalize uncertainty. We work through an example representation of task communication as a POMDP, and present results from a user experiment on an interactive virtual robot, compared with a human controlled virtual robot, for a task involving a single object movement and binary approval input from the teacher. The results suggest that the proposed POMDP representation produces robots that are robust to teacher error, that can accurately infer task details, and that are perceived to be intelligent.

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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