SD-GRPO extends GRPO by computing per-segment advantages via z-normalization of verifiable segment rewards, yielding gains on long-form VL tasks with varying semantic independence across segments.
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SD-GRPO: Verifiable Segment Decomposition for Long-Form Vision-Language Generation
SD-GRPO extends GRPO by computing per-segment advantages via z-normalization of verifiable segment rewards, yielding gains on long-form VL tasks with varying semantic independence across segments.