arXiv:2502.09490cs.LGcs.SY2025-02被引 1

用低秩分解加速逆向设计,速度比现有方法快3-5个数量级。

Inverse Design with Dynamic Mode Decomposition

  • 基于最小二乘的动态模态分解构建参数空间低维子空间。
  • 在结构振动与流体动力学问题上精度高10倍,速度提升3-5个数量级。
  • 适合需要快速、可解释、抗噪逆向设计的工程场景。

我们提出一种计算高效的逆向设计自动化方法。基于简单的最小二乘回归,动态模态分解算法可构建跨越多个实验的参数空间低秩子空间。所提出的逆向设计动态模态组合(ID-DMD)算法利用该低维子空间,在笔记本级计算设备上实现快速数字设计与优化,甚至可指定动态行为本身。该方法对噪声鲁棒,具有物理可解释性,并能提供不确定性量化指标。通过随机化算法,该架构还可高效扩展至大规模设计问题。其方法简洁且易于实现,相比竞争方法,在复杂工程设计问题(从结构振动到流体动力学)上精度提升一个数量级,同时速度加快3-5个数量级。凭借其速度、鲁棒性、可解释性和易用性,ID-DMD相较于其他先进机器学习方法,标志着数据驱动逆向设计与优化的重大进步,有望改变实际逆向设计范式。

原文摘要 · Abstract (English)

We introduce a computationally efficient method for the automation of inverse design in science and engineering. Based on simple least-square regression, the underlying dynamic mode decomposition algorithm can be used to construct a low-rank subspace spanning multiple experiments in parameter space. The proposed inverse design dynamic mode composition (ID-DMD) algorithm leverages the computed low-dimensional subspace to enable fast digital design and optimization on laptop-level computing, including the potential to prescribe the dynamics themselves. Moreover, the method is robust to noise, physically interpretable, and can provide uncertainty quantification metrics. The architecture can also efficiently scale to large-scale design problems using randomized algorithms in the ID-DMD. The simplicity of the method and its implementation are highly attractive in practice, and the ID-DMD has been demonstrated to be an order of magnitude more accurate than competing methods while simultaneously being 3-5 orders faster on challenging engineering design problems ranging from structural vibrations to fluid dynamics. Due to its speed, robustness, interpretability, and ease-of-use, ID-DMD in comparison with other leading machine learning methods represents a significant advancement in data-driven methods for inverse design and optimization, promising a paradigm shift in how to approach inverse design in practice.

逆向设计动态模态分解优化低秩建模

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