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arXiv — cs.AI preprintsInternational7 October 2026

Beyond Scalar IoU: Structured Verification from Rollout Groups for Video Temporal Grounding

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arXiv:2610.07601v1 Announce Type: new Abstract: Reinforcement learning with verifiable rewards (RLVR) provides a natural framework for adapting pretrained models to video temporal grounding, where generated temporal intervals can be scored directly against ground truth intervals. Yet existing overlap verifiers typically score each rollout independently, leaving the joint structure of the rollout group unused. We introduce SUTURE, which conditions verification on the rollout group and exploits its structure at two complementary scales: disagreement across rollouts controls how strongly the targ
— arXiv — cs.AI preprints

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