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Author

Qiuhong Shen

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Preprint Oct 2026

Velox: Spatial Memory Makes World Models Efficient

Video world models turn actions and camera motion into long visual rollouts, making video a natural interface for interactive simulation. Such interaction requires responsive generation, yet coherent rollouts must retain visual memory of what has already been generated. Chunked video diffusion models usually keep this...

Qiuhong Shen, Shi-Zun Wang, Xin-Chao Wang · 0 citations
Preprint Oct 2026

Routing Policy Optimization for Online Diffusion Reinforcement Learning

Reinforcement learning can align visual generators with reward signals beyond their pretraining objectives, but existing score-function methods typically introduce stochasticity by perturbing the reverse denoising trajectory, leading to costly rollout-based optimization. We instead ask whether stochastic exploration ca...

Qiuhong Shen, Yiding Yang, Yu-Xin Zhang et al. · 0 citations

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