@article{advantagecollapseingrouprelativepolicyop,
  title = {Advantage Collapse in Group Relative Policy Optimization: Diagnosis and Mitigation},
  author = {Xixiang He and Qiyao Sun and Ao Cheng and Xingming Li and Xuanyu Ji and Hailun Lu and Runke Huang and Qingyong Hu},
  year = {2026},
  eprint = {2605.21125},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.21125},
}