2 papers
cs.LG2026
TRACE: Spatiotemporal Contact Memory Graph Network Simulator for Granular Dynamics
Changjian Zhou, Negin Yousefpour, Jie Qi +3
Learned graph simulators provide an efficient alternative to high-fidelity solvers for granular dynamics. However, granular motion depends strongly on inter-granular contact histor…
cs.LG2026
PhysGuard: Fisher-Guided Gradient Projection for Sim-to-Real Neural PDE Surrogates
Changjian Zhou, Junfeng Fang, Negin Yousefpour +3
Neural operator models trained on simulation data often lose accuracy when applied to experimental measurements due to the sim-to-real gap. Standard fine-tuning with limited real d…