FMint: Bridging Human Designed and Data Pretrained Models for Differential Equation Foundation Model
作者: Zezheng Song, Jiaxin Yuan, Haizhao Yang
分类: cs.LG, cs.AI, cs.CE, math.DS, math.NA
发布日期: 2024-04-23 (更新: 2024-09-30)
🔗 代码/项目: GITHUB
💡 一句话要点
提出FMint以解决动态系统快速仿真问题
🎯 匹配领域: 支柱九:具身大模型 (Embodied Foundation Models)
关键词: 动态系统 微分方程 深度学习 多模态学习 快速仿真 误差修正 数值求解 通用求解器
📋 核心要点
- 现有方法在求解微分方程时受限于特定类型或需要大量数据,限制了其在实际应用中的有效性。
- 本文提出FMint模型,通过结合数值和文本数据,利用传统求解器的粗略解进行误差修正,实现动态系统的快速仿真。
- 实验结果表明,FMint在准确性和效率上均优于经典数值求解器,准确性提升1到2个数量级,速度提升5倍。
📝 摘要(中文)
动态系统的快速仿真是科学和工程应用中的一项关键挑战,如天气预报、疾病控制和药物发现。随着深度学习的成功,利用神经网络以数据驱动的方式求解微分方程的兴趣日益增加。然而,现有方法受限于特定类型的微分方程或需要大量数据进行训练,限制了其在数据稀缺或获取成本高的实际应用中的可行性。为此,本文提出了一种新颖的多模态基础模型FMint,旨在弥合人类设计模型与数据驱动模型之间的差距。FMint基于解码器架构,利用数值和文本数据学习动态系统的通用误差修正方案。经过在40K个常微分方程上的预训练,FMint在处理具有混沌行为和高维度的复杂常微分方程时表现出色,显示出其作为通用求解器的潜力。
🔬 方法详解
问题定义:本文旨在解决动态系统快速仿真中的微分方程求解问题,现有方法通常局限于特定类型的方程或需要大量训练数据,导致在数据稀缺的情况下难以应用。
核心思路:FMint模型通过结合人类设计的数值解和数据驱动的学习方法,利用传统求解器的粗略解进行误差修正,从而实现高效的动态系统仿真。
技术框架:FMint基于解码器架构,采用了上下文学习的方式,整合数值和文本数据。模型的训练过程包括预训练和微调两个阶段,使用40K个常微分方程的语料库进行学习。
关键创新:FMint的主要创新在于其多模态学习能力,能够有效结合人类设计的解和数据驱动的学习,显著提高了求解的准确性和效率。这与传统方法的单一依赖于数据或模型设计形成鲜明对比。
关键设计:模型采用了特定的损失函数来优化误差修正过程,网络结构设计为解码器架构,支持上下文学习,能够处理多种输入形式的数据信息。
🖼️ 关键图片
📊 实验亮点
实验结果显示,FMint在处理复杂常微分方程时,准确性提升了1到2个数量级,相较于传统数值算法实现了5倍的速度提升,展现出其作为通用求解器的强大潜力。
🎯 应用场景
FMint模型在天气预报、疾病控制和药物发现等领域具有广泛的应用潜力。其高效的动态系统仿真能力能够帮助科学家和工程师在数据稀缺的情况下快速获得准确的结果,推动相关领域的研究和应用进展。
📄 摘要(原文)
The fast simulation of dynamical systems is a key challenge in many scientific and engineering applications, such as weather forecasting, disease control, and drug discovery. With the recent success of deep learning, there is increasing interest in using neural networks to solve differential equations in a data-driven manner. However, existing methods are either limited to specific types of differential equations or require large amounts of data for training. This restricts their practicality in many real-world applications, where data is often scarce or expensive to obtain. To address this, we propose a novel multi-modal foundation model, named \textbf{FMint} (\textbf{F}oundation \textbf{M}odel based on \textbf{In}i\textbf{t}ialization), to bridge the gap between human-designed and data-driven models for the fast simulation of dynamical systems. Built on a decoder-only transformer architecture with in-context learning, FMint utilizes both numerical and textual data to learn a universal error correction scheme for dynamical systems, using prompted sequences of coarse solutions from traditional solvers. The model is pre-trained on a corpus of 40K ODEs, and we perform extensive experiments on challenging ODEs that exhibit chaotic behavior and of high dimensionality. Our results demonstrate the effectiveness of the proposed model in terms of both accuracy and efficiency compared to classical numerical solvers, highlighting FMint's potential as a general-purpose solver for dynamical systems. Our approach achieves an accuracy improvement of 1 to 2 orders of magnitude over state-of-the-art dynamical system simulators, and delivers a 5X speedup compared to traditional numerical algorithms. The code for FMint is available at \url{https://github.com/margotyjx/FMint}.