@article{regretanalysisforhierarchicalexperts,
  title = {Regret Analysis for Hierarchical Experts Bandit Problem},
  author = {Qihan Guo and Siwei Wang and Jun Zhu},
  year = {2022},
  eprint = {2208.05622},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2208.05622v1},
}