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Chao Xu

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#artificial intelligence Preprint Oct 2026

WORTH Benchmark: Evidence Discovery under Not-Fully-Cooperative Information -- A Two-Episode Pilot

The WORTH Benchmark is proposed: models read original mystery narratives without clue annotations, autonomously select key clue sentences, identify case participants, and explain their reasoning process, and it is suggested that not-fully-cooperative informational relationships may influence evidence selection and judg...

B. Zou, Chao Xu · 0 citations
Preprint Aug 2026

SCOPE: Subspace Clustering with Online Per-Head Top-K Estimation for Sparse Video Attention

SCOPE is a training-free sparse attention framework that combines 3D-RoPE-aligned key subspace clustering with online per-head Top-$k$ estimation for efficient video-DiT inference and consistently outperforms existing training-free baselines in both fidelity and latency.

Qi Zhao, Qi-Rui Li, Hanlin Tang et al. · 0 citations
Preprint Jul 2026

Beyond Time Shifts: Adapting Omni-LLM as a Reference-Free Evaluator for Generative Audio-Visual Models

As audio-visual generative models evolve into world simulators, cross-modal synchronization stands as a critical proxy for assessing the consistency of world dynamics and causality in generated content. However, existing evaluation metrics presume structural correctness, reducing synchronization to mere temporal alignm...

Yi-Jie Qian, Juncheng Wang, Chao Xu et al. · 0 citations
Jul 2026

Text Template Tokens Are Implicit Semantic Registers in Diffusion Transformers

A causal interpretability framework is introduced that reveals that the tokens encoding semantics at the input need not be those that maintain them during generation, but also provides a causal view of internal mechanisms in diffusion transformers.

Maohua Li, Qi-Rui Li, Yanke Zhou et al. · 0 citations

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