@article{fastratesforofflinecontextualbanditswith,
  title = {Fast Rates for Offline Contextual Bandits with Forward-KL Regularization under Single-Policy Concentrability},
  author = {Qingyue Zhao and Kaixuan Ji and Heyang Zhao and Quanquan Gu},
  year = {2026},
  eprint = {2605.09214},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.09214},
}