Showing math.NAShow all
3 papers · 1 filter
math.NA2026
Revisiting CUR Perturbation Analysis: A Local Tangent-Space Expansion
Longxiu Huang
CUR decompositions approximate a matrix using selected columns, rows, and their intersection. Classical CUR theory provides exactness results for low-rank matrices and perturbation…
math.NA2025
Randomized Space-Time Sampling for Affine Graph Dynamical Systems
Le Gong, Longxiu Huang
This paper investigates the problem of dynamical sampling for graph signals influenced by a constant source term. We consider signals evolving over time according to a linear dynam…
math.NA2024
Random space-time sampling and reconstruction of sparse bandlimited graph diffusion field
Longxiu Huang, Dongyang Li, Sui Tang +1
In this work, we investigate the sampling and reconstruction of spectrally -sparse bandlimited graph signals governed by heat diffusion processes. We propose a random space-time…