arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1903.09243cs.ROcs.AIcs.CLcs.LG
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机器人指令高效自然语言理解的紧凑表示推理

Inferring Compact Representations for Efficient Natural Language Understanding of Robot Instructions

University of Rochester(罗切斯特大学);Toyota Technological Institute at Chicago(芝加哥丰田技术学院)

Siddharth Patki, Andrea F. Daniele, Matthew R. Walter, Thomas M. Howard

摘要:

机器人能够解释自然语言的速度和准确性是实现有效人机交互的基础。大量的注意力已经放在开发提高语言理解效率的模型和近似推理算法上。然而,现有的方法仍然试图推理的环境是平坦的,不必要的详细,这限制了可伸缩性的表示。一个开放的问题,然后开发的方法,能够产生最紧凑的环境模型,足以准确和有效的自然语言理解。我们提出了一个模型,利用环境相关的信息编码内的指令,以确定必要的观察和感知分类器的子集,感知一个简洁的,特定的环境表示。该框架使用三个概率图形模型从语料库的注释指令来推断突出的场景语义,感知分类器和接地符号。两个机器人在不同环境中运行的实验结果表明,通过利用内容和结构的指令,我们的方法学习紧凑的环境表示,显着提高自然语言符号接地的效率。

英文摘要:

The speed and accuracy with which robots are able to interpret natural language is fundamental to realizing effective human-robot interaction. A great deal of attention has been paid to developing models and approximate inference algorithms that improve the efficiency of language understanding. However, existing methods still attempt to reason over a representation of the environment that is flat and unnecessarily detailed, which limits scalability. An open problem is then to develop methods capable of producing the most compact environment model sufficient for accurate and efficient natural language understanding. We propose a model that leverages environment-related information encoded within instructions to identify the subset of observations and perceptual classifiers necessary to perceive a succinct, instruction-specific environment representation. The framework uses three probabilistic graphical models trained from a corpus of annotated instructions to infer salient scene semantics, perceptual classifiers, and grounded symbols. Experimental results on two robots operating in different environments demonstrate that by exploiting the content and the structure of the instructions, our method learns compact environment representations that significantly improve the efficiency of natural language symbol grounding.

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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