arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.07207cs.LGcs.AIcs.CLcs.CVcs.RO
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Language Models as Zero-Shot Planners: Extracting Actionable Knowledge for Embodied Agents

UC Berkeley(加州大学伯克利分校);Carnegie Mellon University(卡内基梅隆大学);Google(谷歌)

Wenlong Huang, Pieter Abbeel, Deepak Pathak, Igor Mordatch

英文摘要:

Can world knowledge learned by large language models (LLMs) be used to act in interactive environments? In this paper, we investigate the possibility of grounding high-level tasks, expressed in natural language (e.g. "make breakfast"), to a chosen set of actionable steps (e.g. "open fridge"). While prior work focused on learning from explicit step-by-step examples of how to act, we surprisingly find that if pre-trained LMs are large enough and prompted appropriately, they can effectively decompose high-level tasks into mid-level plans without any further training. However, the plans produced naively by LLMs often cannot map precisely to admissible actions. We propose a procedure that conditions on existing demonstrations and semantically translates the plans to admissible actions. Our evaluation in the recent VirtualHome environment shows that the resulting method substantially improves executability over the LLM baseline. The conducted human evaluation reveals a trade-off between executability and correctness but shows a promising sign towards extracting actionable knowledge from language models. Website at https://huangwl18.github.io/language-planner

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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