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Zhongyu Zhao

3 accepted papers

2026

BranchGRPO: Stable and Efficient GRPO with Structured Branching in Diffusion Models

ICLR 2026poster

Recent progress in aligning image and video generative models with Group Relative Policy Optimization (GRPO) has improved human preference alignment, but existing variants remain inefficient due to sequential rollouts and large numbers of sampling steps, unreliable credit assignment,as sparse termin…

Cited by 0SourcecodeScholar
2026

ManipDreamer3D: Synthesizing Plausible Robotic Manipulation Video with Occupancy-aware 3D Trajectory

AAAI 2026technical

Data scarcity continues to be a critical bottleneck in the field of robotic manipulation, limiting the ability to train robust and generalizable models. While diffusion models provide a promising approach to synthesizing realistic robotic manipulation videos, their effectiveness hinges on the availa

Cited by 0SourcePDFScholar
2025

EMD: Explicit Motion Modeling for High-Quality Street Gaussian Splatting

ICCV 2025poster

Photorealistic reconstruction of street scenes is essential for developing real-world simulators in autonomous driving. While recent methods based on 3D/4D Gaussian Splatting (GS) have demonstrated promising results, they still encounter challenges in complex street scenes due to the unpredictable m…