@article{rewardmaptacklingsparserewardsinfinegrai,
  title = {RewardMap: Tackling Sparse Rewards in Fine-grained Visual Reasoning via Multi-Stage Reinforcement Learning},
  author = {Sicheng Feng and Kaiwen Tuo and Song Wang and Lingdong Kong and Jianke Zhu and Huan Wang},
  year = {2025},
  eprint = {2510.02240},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2510.02240},
}