@article{lipschitzandcomparatornormadaptivityin,
  title = {Lipschitz and Comparator-Norm Adaptivity in Online Learning},
  author = {Zakaria Mhammedi and Wouter M. Koolen},
  year = {2020},
  eprint = {2002.12242},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2002.12242v2},
}