A frozen teacher provides minimal evidence patches to repair missing spatiotemporal context in video reasoning, paired with a Robust Improvement Reward inside GRPO to yield accuracy gains on benchmarks.
The teacher uses predefined tools to examine specific frames, temporal segments, or spatial regions, generating targeted guidance without revealing the answer
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Find, Fix, Reason: Context Repair for Video Reasoning
A frozen teacher provides minimal evidence patches to repair missing spatiotemporal context in video reasoning, paired with a Robust Improvement Reward inside GRPO to yield accuracy gains on benchmarks.