Giyong Hong

Buckingham $\pi$-Invariant Test‑Time Projection for Robust PDE Surrogate Modeling

PDE surrogate models such as FNO and PINN struggle to predict solutions across inputs with diverse physical units and scales, limiting their out-of-distribution (OOD) generalization. We propose a $\pi$-invariant test-time projection that aligns test inputs with the training distribution by solving a…