通过迭代修正提升PINN训练速度,实现在流体、空气动力学等领域的高效精准求解。
Scale-PINN: Learning Efficient Physics-Informed Neural Networks Through Sequential Correction
- 将数值求解中的残差迭代修正思想融入损失函数设计
- 在挑战性流体问题上将训练时间从数小时缩短至2分钟以内
- 适合需要快速高精度求解偏微分方程的科研与工程场景
物理信息神经网络(PINNs)作为求解偏微分方程的一种无网格范式展现出巨大潜力,但其在科学与工程领域的应用受限于训练缓慢和精度不足。本文提出顺序修正学习策略——Scale-PINN,将现代物理信息学习与数值算法相结合。Scale-PINN直接在损失函数中引入数值求解的核心思想——迭代残差修正,实现损失函数构建的范式转变。该方法在多个物理领域偏微分方程问题上均实现前所未有的收敛速度,例如将当前最优PINN在复杂流体动力学问题上的训练时间从数小时降至2分钟以下,同时保持优异精度,并成功应用于空气动力学和城市科学中的代表性问题。通过融合数值方法的严谨性与深度学习的灵活性,Scale-PINN为科学与工程中可扩展的物理信息学习提供了重要突破。代码已开源:https://github.com/chiuph/SCALE-PINN。
原文摘要 · Abstract (English)
Physics-informed neural networks (PINNs) have emerged as a promising mesh-free paradigm for solving partial differential equations, yet adoption in science and engineering is limited by slow training and modest accuracy relative to modern numerical solvers. We introduce the Sequential Correction Algorithm for Learning Efficient PINN (Scale-PINN), a learning strategy that bridges modern physics-informed learning with numerical algorithms. Scale-PINN incorporates the iterative residual-correction principle, a cornerstone of numerical solvers, directly into the loss formulation, marking a paradigm shift in how PINN losses can be conceived and constructed. This integration enables Scale-PINN to achieve unprecedented convergence speed across PDE problems from different physics domain, including reducing training time on a challenging fluid-dynamics problem for state-of-the-art PINN from hours to sub-2 minutes while maintaining superior accuracy, and enabling application to representative problems in aerodynamics and urban science. By uniting the rigor of numerical methods with the flexibility of deep learning, Scale-PINN marks a significant leap toward the practical adoption of PINNs in science and engineering through scalable, physics-informed learning. Codes are available at https://github.com/chiuph/SCALE-PINN.
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