@article{asimpleandadaptivelearningrateforftrl,
  title = {A Simple and Adaptive Learning Rate for FTRL in Online Learning with Minimax Regret of $Θ(T^{2/3})$ and its Application to Best-of-Both-Worlds},
  author = {Taira Tsuchiya and Shinji Ito},
  year = {2024},
  eprint = {2405.20028},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2405.20028v1},
}