B-GRTO extends GRPO by reusing rollouts to optimize auxiliary segmentation decoder objectives, yielding substantial gains over plain GRPO on referring segmentation tasks.
On the effectiveness of textual prompting with lightweight fine-tuning for sam3 remote sensing segmentation, 2026
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B-GRTO: Bootstrapped Group Relative Tool Optimization for Referring Segmentation
B-GRTO extends GRPO by reusing rollouts to optimize auxiliary segmentation decoder objectives, yielding substantial gains over plain GRPO on referring segmentation tasks.