SAM-R1: Leveraging SAM for Reward Feedback in Multimodal Segmentation via Reinforcement Learning - Huang, Jiaqi; Xu, Zunnan; Zhou, Jun; Liu, Ting; Xiao, Yicheng; Ou, Mingwen; Ji, Bowen; Li, Xiu; Yuan, Kehong (Advances in Neural Information Processing Systems, 2025)