@misc{ramesh2024group,
  title={Group Robust Preference Optimization in Reward-free RLHF},
  author={Shyam Sundhar Ramesh and Yifan Hu and Iason Chaimalas and Viraj Mehta and Pier Giuseppe Sessa and Haitham Bou Ammar and Ilija Bogunovic},
  year={2024},
  eprint={2405.20304},
  archivePrefix={arXiv},
  primaryClass={cs.CL},
  url={https://arxiv.org/abs/2405.20304}
}