Asking Before Acting: Gather Information in Embodied Decision Making with Language Models

• URL: http://arxiv.org/abs/2305.15695v2
• Date: Tue, 16 Apr 2024 13:24:59 GMT
• Title: Asking Before Acting: Gather Information in Embodied Decision Making with Language Models
• Authors: Xiaoyu Chen, Shenao Zhang, Pushi Zhang, Li Zhao, Jianyu Chen,
• Abstract summary: We show that Large Language Models (LLMs) encounter challenges in efficiently gathering essential information in unfamiliar environments. We propose textitAsking Before Acting (ABA), a method that empowers the agent to proactively inquire with external sources for pertinent information using natural language. We conduct extensive experiments involving a spectrum of environments including text-based household everyday tasks, robot arm manipulation tasks, and real world open domain image based embodied tasks.
• Score: 20.282749796376063
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: With strong capabilities of reasoning and a broad understanding of the world, Large Language Models (LLMs) have demonstrated immense potential in building versatile embodied decision-making agents capable of executing a wide array of tasks. Nevertheless, when deployed in unfamiliar environments, we show that LLM agents encounter challenges in efficiently gathering essential information, leading to suboptimal performance. Conversely, human individuals often seek additional information from their peers prior to taking action, harnessing external knowledge to avoid unnecessary trial and error. Drawing inspiration from this behavior, we propose \textit{Asking Before Acting} (ABA), a method that empowers the agent to proactively inquire with external sources for pertinent information using natural language during their interactions within the environment. In this way, the agent is able to enhance its efficiency and performance by circumventing potentially laborious steps and combating the difficulties associated with exploration in unfamiliar environments and vagueness of the instructions. We conduct extensive experiments involving a spectrum of environments including text-based household everyday tasks, robot arm manipulation tasks, and real world open domain image based embodied tasks. The experiments involve various models from Vicuna to GPT-4. The results demonstrate that, even with modest prompts modifications, ABA exhibits substantial advantages on both performance and efficiency over baseline LLM agents. Further finetuning ABA with reformulated metadata (ABA-FT) faciliates learning the rationale for asking and allows for additional enhancements especially in tasks that baselines struggle to solve.

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