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Yichi Zhang

5 papers indexed

arxivcs.MAcs.AI2026-07-12

Auditing Belief-Conditioned LLM Agents in Hidden-Information Social Deduction Games

Yuan Gao, Jiangyi Yang, Yao Zhao, Yichi Zhang

Evaluating LLM agents in hidden-information multi-agent settings is hard: final outcomes are high-variance and rarely reveal why an agent decided as it did. We study this in a 9-player Werewolf environment where agents act under strict, code-level information isolation, and we bu…

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arxivcs.RO2026-06-30

UniTacVLA: Unified Tactile Understanding and Prediction in Vision Language Action Models

Xidong Zhang, Yichi Zhang, Jiaxin Shi, Fucai Zhu, Siyu Zhu, Michael Yu Wang, et al.

Vision-language-action (VLA) models have achieved strong performance in many robotic manipulation tasks, yet remain limited in contact-rich dexterous manipulation. To overcome this limitation, recent vision-tactile-language-action (VTLA) methods incorporate tactile sensing into V…

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arxivcs.CRcs.CV2026-06-29

Rethinking Forgery Attacks on Semantic Watermarks in Black-Box Settings: A Geometric Distortion Perspective

Cheng-Yi Lee, Yichi Zhang, Yuchen Yang, Chun-Shien Lu, Jun-Cheng Chen

Recent studies have shown that semantic watermarks, which embed information into the initial noise of latent diffusion models (LDMs), are vulnerable to black-box forgery attacks. However, existing methods primarily rely on empirical evidence and lack a rigorous theoretical unders…

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