1. A Kernel Approach for PDE Discovery and Operator Learning
- Author
-
Long, Da, Mrvaljevic, Nicole, Zhe, Shandian, and Hosseini, Bamdad
- Subjects
Statistics - Machine Learning ,Computer Science - Machine Learning - Abstract
This article presents a three-step framework for learning and solving partial differential equations (PDEs) using kernel methods. Given a training set consisting of pairs of noisy PDE solutions and source/boundary terms on a mesh, kernel smoothing is utilized to denoise the data and approximate derivatives of the solution. This information is then used in a kernel regression model to learn the algebraic form of the PDE. The learned PDE is then used within a kernel based solver to approximate the solution of the PDE with a new source/boundary term, thereby constituting an operator learning framework. Numerical experiments compare the method to state-of-the-art algorithms and demonstrate its competitive performance.
- Published
- 2022