@article{yourgrouprelativeadvantageisbiased,
  title = {Your Group-Relative Advantage Is Biased},
  author = {Fengkai Yang and Zherui Chen and Xiaohan Wang and Xiaodong Lu and Jiajun Chai and Guojun Yin and Wei Lin and Shuai Ma and Fuzhen Zhuang and Deqing Wang and Yaodong Yang and Jianxin Li and Yikun Ban},
  year = {2026},
  eprint = {2601.08521},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.08521},
}