@article{proximalonlinegradientisoptimumfor,
  title = {Proximal Online Gradient is Optimum for Dynamic Regret},
  author = {Yawei Zhao and Shuang Qiu and Ji Liu},
  year = {2018},
  eprint = {1810.03594},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1810.03594v6},
}