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arXiv 2506.06363physics.chem-phcond-mat.mtrl-scics.AIcs.LGphysics.comp-ph
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ChemGraph:面向计算化学工作流的智能体框架

ChemGraph: An Agentic Framework for Computational Chemistry Workflows

Argonne National Laboratory(阿贡国家实验室)

Thang D. Pham, Aditya Tanikanti, Murat Keçeli

AI总结:

本文提出 ChemGraph 智能体框架,结合图神经网络基础模型与 LLM 多智能体规划推理,自动化多方法计算化学工作流,并在 13 项基准上验证模型规模与任务分解的效果。

摘要:

原子尺度模拟是化学和材料科学中的重要工具,可加速新型催化剂、储能材料和药物的发现。然而,由于计算方法种类繁多、软件生态系统多样,并且在设置、执行和验证阶段需要专业知识与人工投入,运行这些模拟仍然具有挑战性。在本工作中,我们提出 ChemGraph,这是一个由人工智能和先进模拟工具驱动的智能体框架,用于简化并自动化计算化学与材料科学工作流。ChemGraph 利用基于图神经网络的基础模型实现准确且具有计算效率的计算,并利用大语言模型(LLM)进行自然语言理解、任务规划和科学推理,以提供直观的交互式界面。用户可以执行分子结构生成、单点能、几何优化、振动分析和热化学计算等任务,所用方法涵盖紧束缚、机器学习原子间势,以及基于密度泛函理论或波函数理论的方法。我们在 13 个基准任务上评估 ChemGraph,结果表明较小的 LLM(GPT-4o-mini、Claude-3.5-haiku、Qwen2.5-14B)在简单工作流上表现良好,而更复杂的任务则受益于 GPT-4o 等较大模型。重要的是,我们表明通过多智能体框架将复杂任务分解为较小子任务,可使较小的 LLM 在特定场景下达到或超过 GPT-4o 的性能。

英文摘要:

Atomistic simulations are essential tools in chemistry and materials science, accelerating the discovery of novel catalysts, energy storage materials, and pharmaceuticals. However, running these simulations remains challenging due to the wide range of computational methods, diverse software ecosystems, and the need for expert knowledge and manual effort for the setup, execution, and validation stages. In this work, we present ChemGraph, an agentic framework powered by artificial intelligence and state-of-the-art simulation tools to streamline and automate computational chemistry and materials science workflows. ChemGraph leverages graph neural network-based foundation models for accurate yet computationally efficient calculations and large language models (LLMs) for natural language understanding, task planning, and scientific reasoning to provide an intuitive and interactive interface. Users can perform tasks such as molecular structure generation, single-point energy, geometry optimization, vibrational analysis, and thermochemistry calculations with methods ranging from tight-binding and machine learning interatomic potentials to density functional theory or wave function theory-based methods. We evaluate ChemGraph across 13 benchmark tasks and demonstrate that smaller LLMs (GPT-4o-mini, Claude-3.5-haiku, Qwen2.5-14B) perform well on simple workflows, while more complex tasks benefit from using larger models like GPT-4o. Importantly, we show that decomposing complex tasks into smaller subtasks through a multi-agent framework enables smaller LLM models to match or exceed GPT-4o's performance in specific scenarios.

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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