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Xingxing Wei

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#artificial intelligence Preprint Sep 2026

ThinkingGuard: Decoding Implicit Hazards via Step-by-Step Risk Attribution in Multimodal Large Language Models

A Step-Supervised Structured Reasoning training framework is proposed and employed to train ThinkingGuard, a specialized guard model that decouple implicit risk identification into progressive cognitive stages, and utilize a step-reward Monte Carlo Tree Search algorithm to explore optimal reasoning trajectories.

Ruo-Chen Zhang, Yao Huang, Yi-Tong Sun et al. · 0 citations
Preprint Aug 2026

AdvTiles: Physical Adversarial Camouflage Clothing against Person Detectors via Learnable Tiles

Physical adversarial attacks against person detectors have evolved from localized patches to full-body textures. However, achieving both visual naturalness and strong attack effectiveness remains challenging. Existing natural-looking methods typically optimize camouflage textures as a whole, limiting the flexibility to...

Jinlei Wang, Jiahuan Long, Mingkai Sun et al. · 0 citations

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