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Author

Jun Wan

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#artificial intelligence Preprint Sep 2026

PETR: Prompt Ensembling with Training-free Routing for Vision-Language Models

Prompt learning efficiently adapts vision-language models (VLMs) to downstream tasks, but gains on seen classes often come at the expense of generalization to unseen classes. To address this limitation, we propose prompt ensembling with training-free routing (PETR), whose key innovation is a carefully designed dual-pro...

Wei-Han Cai, Hao Tan, Xin-Ping Gao et al. · 0 citations
Preprint Jul 2026

Veritas++: Value-aware On-Policy Distillation for Perception-Enhanced AIGI Detection

This work presents Veritas++, a perception-enhanced reasoning framework that establishes reliable perception as the foundation of authenticity reasoning, and introduces Value-aware On-Policy Distillation (VaOPD), an adaptive distillation mechanism that prioritizes high-value distillation signals over uniform supervisio...

Hao Tan, Jun Lan, Zichang Tan et al. · 1 citation
#generative ai Preprint Aug 2026

MotionPhys: Detecting AI-Generated Videos via Physical Consistency of Optical-Flow Trajectories

This work introduces MotionPhys, a lightweight and interpretable framework that treats sparse motion trajectories as physical evidence rather than relying on appearance artifacts or generator-specific traces and reveals subtle motion inconsistencies that are difficult to capture with conventional visual cues and transf...

Hao He, Hao Tan, Zichang Tan et al. · 0 citations

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