Author

Lei-Gang Qu

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Preprint Aug 2026

Routing Before Looking: Query-Adaptive Evidence Acquisition for Long-form Video Understanding

Long-form video understanding remains challenging for video agents due to the mismatch between query demands and evidence acquisition strategies. Although recent planning-before-perception methods outperform query-agnostic pipelines, they often rely on a single dominant strategy, either generation-based strategy or ret...

Tianyu Wang, Xu-Ying Wu, Yuxiang Ma et al. · 1 citation

Preprint Aug 2026

On-Policy Self-Distillation in Diffusion Models

The results support on-policy self-distillation as an efficient and analyzable approach to diffusion post-training by converting image-level reward guidance into explicit and continually refreshed intermediate supervision, thereby opening a path toward more efficient and diagnosable alignment.

Weina Zhou, Xiongwei Zhu, Ling-Dong Kong et al. · 4 citations

Preprint Jul 2026

Optimizing Visual Generative Models via Distribution-wise Rewards

A novel framework that finetunes generative models using distribution-wise rewards, ensuring better alignment with real-world data distributions is presented, and a subset-replace strategy that efficiently provides reward signals by updating only a small subset of a generated reference set is introduced.

Ruihang Li, Mengde Xu, Shuyang Gu et al. · 0 citations