3 papers
math.OC2026
A Stochastic GDA Method With Backtracking For Solving Nonconvex Concave Minimax Problems
Necdet Serhat Aybat, Qiushui Xu, Xuan Zhang +1
We propose a stochastic GDA (gradient descent ascent) method with backtracking (SGDA-B) to solve nonconvex-concave (NCC) minimax problems of the form: $\min_{\mathbf{x}} \max_y \su…
physics.optics2025
Compact and fully functional high-frequency sine wave gating InGaAs/InP single-photon detector module
Qi Xu, Chao Yu, Dajian Cui +7
High-frequency sine wave gating (SWG) InGaAs/InP single-photon detectors (SPDs) are widely used for synchronous near-infrared single-photon detection. For practical use, the size o…
math.OC2025
AGDA+: Proximal Alternating Gradient Descent Ascent Method with a Nonmonotone Adaptive Step-Size Search for Nonconvex Minimax Problems
Xuan Zhang, Qiushui Xu, Necdet Serhat Aybat
We consider double-regularized nonconvex-strongly concave (NCSC) minimax problems of the form , where , ar…