@inproceedings{beyonducboptimalandefficientcontextual,
  title = {Beyond UCB: Optimal and Efficient Contextual Bandits with Regression Oracles},
  author = {Dylan J. Foster and Alexander Rakhlin},
  year = {2020},
  booktitle = {ICML 2020 1},
  eprint = {2002.04926},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2002.04926v2},
}