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arXiv 2301.04793physics.comp-phcs.NAmath.DSmath.NA
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动力学偏微分方程的PINN不是训练更深的网络,而是学习平流和时间方差

PINN for Dynamical Partial Differential Equations is Not Training Deeper Networks Rather Learning Advection and Time Variance

Siddharth Rout

摘要:

研究了物理信息神经网络(PINNs)的概念和技术,并指出了其局限性,使其能够有效地近似动力学方程。潜在的工作研究领域进行了探索,以增加这种技术的鲁棒性的偏微分方程的可解性。它被确定为PINN潜在的失败,以更强的平流和更长的持续时间。此外,优化功能和约束设置需要更智能。即使是浅层网络也能解决很多问题,而强大的深层网络则会失败。提出了一种基于水库计算的递归神经网络结构来求解动力学问题。

英文摘要:

The concepts and techniques of physics-informed neural networks (PINNs) is studied and limitations are identified to make it efficient to approximate dynamical equations. Potential working research domains are explored for increasing the robustness of this technique for the solvability of partial differential equations. It is identified that PINNs potentially fails to stronger advection and longer time duration. Also, optimization function and constraint posing needs to be smarter. Even a shallow network is good for a lot of problems while powerful deeper network fails. Reservoir computing based recurrent neural network architecture is recommended to solve dynamical problems.

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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