@article{asecondorderregretboundfornormalhedge,
  title = {A second order regret bound for NormalHedge},
  author = {Yoav Freund and Nicholas J. A. Harvey and Victor S. Portella and Yabing Qi and Yu-Xiang Wang},
  year = {2026},
  eprint = {2602.08151},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.08151},
}