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Xingqiao Lin

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#artificial intelligence Preprint Sep 2026

MeanFlowAdvantage: Stable Reward Fine-Tuning for Few-Step Average-Velocity Generators

This work introduces MeanFlowAdvantage, a signed advantage-weighted least-squares objective for average-velocity generators, and uses a shared, detached MeanFlow derivative correction to express the reward objective in prediction space while making rollout and reference regularization exact penalties on the average-vel...

Hao-Cheng Tang, Tian-Chi Xie, Xing-Qiao Lin · 0 citations

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