Author

Xu Zhang

h-index 0 View on Semantic Scholar

We have 2 of 3 papers

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#machine learning Preprint Sep 2026

SAM-on-the-Curve: Sharpness-Aware Mode Connectivity for Robust Weight-Space Interpolation

This work proposes Sharp Mode Connectivity (SMC), which applies a first-order sharpness-aware approximation to the resulting minimax functional, enforcing flatness along the entire curve rather than only on it, establishing path-wise flatness as a practical principle for robust weight-space interpolation.

Alejandro Calatrava, Xu Zhang, Wang Ren · 0 citations

Preprint Aug 2026

Robust CurveMoE: Multi-Norm Adversarial Defense for Mixture-of-Experts Models via Mode Connectivity

Experiments show that Robust CurveMoE consistently improves clean, norm-specific, and Union accuracy over MSD and ERMC and introduces contribution-guided partial updating, which selects influential curve parameters using initialization-based gradient scores, and theoretically bound the objective gap between partial and...

Xu Zhang, Wanggui Ren · 0 citations