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Shi-Jie Zhang

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#machine learning Preprint Sep 2026

Robustness of Diffusion Models under Distribution Shift

Score-based diffusion models are increasingly considered in settings where the underlying data distribution may differ from the training distribution, yet existing theoretical guarantees largely focus on the no-shift setting. In this work, we study robust score estimation under Wasserstein perturbations of a reference...

Wei Luo, N. K. Chada, Shi-Jie Zhang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Jailbreaking Text-to-Image Models Through Cracks: Navigating Heterogeneous Safety Filters via Multi-Agent Debate

The Detection Surface is introduced, a unified geometric framework that characterizes the decision boundaries induced by heterogeneous T2I safety filters and their joint effect on the jailbreak search space and reveals that successful evasion is governed by a sparse and non-convex region shaped by cross-layer conflicts...

Kai-Yan Wen, Shi-Jie Zhang, Lu Yu et al. · 0 citations

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