2 papers
math.OC2025
A fast iterative thresholding and support-and-scale shrinking algorithm (fits3) for non-lipschitz group sparse optimization (i): the case of least-squares fidelity
Yanan Zhao, Qiaoli Dong, Yufei Zhao +1
We consider to design a new efficient and easy-to-implement algorithm to solve a general group sparse optimization model with a class of non-convex non-Lipschitz regularizations, n…
physics.geo-ph2024
Superstep wavefield propagation
Tamas Nemeth, Kurt Nihei, Alex Loddoch +10
This paper describes how to propagate wavefields for arbitrary numbers of traditional time steps in a single step, called a superstep. We show how to construct operators that accom…