@article{grpounifyingthegrpoframeworkswithlearnab,
  title = {$λ$-GRPO: Unifying the GRPO Frameworks with Learnable Token Preferences},
  author = {Yining Wang and Jinman Zhao and Chuangxin Zhao and Shuhao Guan and Gerald Penn and Shinan Liu},
  year = {2025},
  eprint = {2510.06870},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2510.06870},
}