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About this paper
Hangwei Zhang, Nathan Rouillé, Chuanxia Zheng
CorrFlow adds a lightweight refiner that reviews the base model’s clean-sample prediction, conditioning, noise level, and hidden states before each sampling update. It estimates a velocity residual and corrects the velocity, adding one refiner pass per step but no additional base-model evaluation. On VideoPhy2’s ALL set, Joint reaches 27.0% versus Wan2.1-T2V-1.3B’s 24.8%, with Joint requiring both physical and semantic thresholds.
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