Proposed pseudo self-referenced early stopping for Deep Image Prior uses constructed image pairs to detect overfitting, outperforming existing methods across inverse imaging problems without requiring noise level estimates.
Wasserstein gradient flows and forward-only diffusion share metastable dynamics causing exponentially slow mixing across well-separated modes, revealing a structural limit of local sampling.
A forward-only gradient approximation for bilinear forms of Hermitian matrix functions reuses the Lanczos pass with minimal overhead, offering provable error bounds and unconditional stability without reorthogonalization.