Author

Chao Xu

h-index 2 View on Semantic Scholar

We have 3 of 12 papers

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

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. · arXiv.org · 0 citations