3 papers
math.OC2026
Hessian-Free Distributed Bilevel Optimization via Penalization with Time-Scale Separation
Youcheng Niu, Jinming Xu, Ying Sun +2
This paper considers a class of distributed bilevel optimization (DBO) problems with a coupled inner-level subproblem. Existing approaches typically rely on hypergradient estimatio…
cs.CV2025
WCCNet: Wavelet-context Cooperative Network for Efficient Multispectral Pedestrian Detection
Xingjian Wang, Li Chai, Jiming Chen +1
Multispectral pedestrian detection is essential to various tasks especially autonomous driving, for which both the accuracy and computational cost are of paramount importance. Most…
cs.CV2025
Frequency-Domain Refinement with Multiscale Diffusion for Super Resolution
Xingjian Wang, Li Chai, Jiming Chen
The performance of single image super-resolution depends heavily on how to generate and complement high-frequency details to low-resolution images. Recently, diffusion-based DDPM m…