@article{biasfittingtomitigatelengthbiasof,
  title = {Bias Fitting to Mitigate Length Bias of Reward Model in RLHF},
  author = {Kangwen Zhao and JianFeng Cai and Jinhua Zhu and Ruopei Sun and Dongyun Xue and Wengang Zhou and Li Li and Houqiang Li},
  year = {2025},
  eprint = {2505.12843},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2505.12843v1},
}