@article{adaptivityanduniversalityproblemdependen,
  title = {Adaptivity and Universality: Problem-dependent Universal Regret for Online Convex Optimization},
  author = {Peng Zhao and Yu-Hu Yan and Hang Yu and Zhi-Hua Zhou},
  year = {2025},
  eprint = {2511.19937},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2511.19937},
}