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Shengqiong Wu

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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, Lingdong Kong et al. · 0 citations
Preprint Aug 2026

UrbanGround: From Local Perception to Spatial Agency in a Real-Scale City

This paper proposes UrbanGround, the first sandbox to make this question testable in a physically constrained replica of Hong Kong built from territory-wide 3D geospatial data, and hopes it will support broader study of how far current MLLM agents can explore reliably in complex, open-ended urban environments.

Tianjie Ju, Zheng Wu, Yueqing Sun et al. · 0 citations
Preprint Aug 2026

V-RAE: Rethinking Video Latent Spaces for Generation

V-RAE, a video representation autoencoder that builds compact generative latents on top of frozen vision foundation model representations, and tFVD, a temporal-coherence diagnostic that correlates more reliably with downstream generation quality are introduced.

Minghui Guo, Shengqiong Wu, Hao Fei · 0 citations