RePrompt: Planning by Automatic Prompt Engineering for Large Language Models Agents

• URL: http://arxiv.org/abs/2406.11132v2
• Date: Thu, 13 Feb 2025 21:38:42 GMT
• Title: RePrompt: Planning by Automatic Prompt Engineering for Large Language Models Agents
• Authors: Weizhe Chen, Sven Koenig, Bistra Dilkina,
• Abstract summary: We propose a novel method, textscRePrompt, which does agradient descent"-like approach to optimize the step-by-step instructions in the prompts given to LLM agents.<n>By leveraging intermediate feedback, textscRePrompt can optimize the prompt without the need for a final solution checker.
• Score: 27.807695570974644
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In the past year, large language models (LLMs) have had remarkable success in domains outside the traditional natural language processing, and their capacity is further expanded into the so-called LLM agents when connected with external tools. In all domains, the prompt to the LLMs has been shown to make a big difference in what the LLM would generate and thus affect the performance of the LLM agents. Therefore, automatic prompt engineering (APE) has become an important question for many researchers and users of LLMs. However, previous works in APE rely on a final checker to evaluate the performance of the given prompt -- a requirement that is hard to meet in the case of LLM agents, where intermediate feedback is easier to obtain, and the final evaluation could be expensive, inaccurate, or even missing. In this paper, we propose a novel method, \textsc{RePrompt}, which does a ``gradient descent"-like approach to optimize the step-by-step instructions in the prompts given to LLM agents, based on the chat history obtained from interactions and reflections with LLM agents. By leveraging intermediate feedback, \textsc{RePrompt} can optimize the prompt without the need for a final solution checker. We evaluate our approach on PDDL generation, TravelPlanner, and Meeting Planning to show that our method could generally improve performance for different reasoning tasks.

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