Author

Jiaming He

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#artificial intelligence Jun 2026

TRACE: Trajectory-Based Safety Patch Learning for LLM Post-Training Realignment

This paper proposes TRACE, which simulates harmful SFT trajectories to produce progressively corrupted model states, and optimizes a safety patch simultaneously across these states, and improves the safety rate by up to 77 percentage points over the best baselines, while maintaining comparable utility to the undefended...

Changyue Li, Jiaming He, Youliang Yuan et al. · arXiv.org · 0 citations

Preprint Aug 2026

CertVLA: Certified Defense against Physical Visual Attacks for Vision-Language-Action Models

Vision-Language-Action (VLA) policies are vulnerable to localized physical perturbations, yet existing certified patch defenses target discrete labels and cannot directly certify continuous, temporally correlated actions. We introduce CertVLA, a certified defense for closed-loop VLA control under bounded patch and text...

Hui Lu, Zhi-Jie Peng, Yuqi Lin et al. · 0 citations

Preprint Aug 2026

ARENA: Automated Red-Teaming for Large Audio Language Models

Ablations show that feedback-based refinement and audio-variant search substantially improve attack discovery.

Jiaming He, Zhicong Huang, Tian Jin et al. · 0 citations