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Guang Lin

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#artificial intelligence Preprint Sep 2026

Verifier Errors in RLVR: Reward Hacking, Limits of Feedback, and Selective Control

In reinforcement learning with verifiable rewards (RLVR), imperfect verifiers can reward incorrect responses, creating opportunities for reward hacking. Using gradient flow with a fixed verifier, we characterize the conditions under which reward rises while correctness falls. We then show that the observations availabl...

Christian Moya, E. Thornley, Guang Lin · 0 citations
Preprint Aug 2026

GraspMeanFlow: SE(3)-Equivariant MeanFlow for Few-Step 6-DoF Grasp Generation

This work proposes GraspMeanFlow, an SE(3)-equivariant MeanFlow framework for few-step 6-DoF grasp generation, and proves that a point-cloud-conditioned distribution transported by an equivariant average-velocity flow map remains invariant, so equivariance is retained under few-step sampling.

J. Kwon, Yikun Bai, Amirhossein Mollaali et al. · 0 citations

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