@article{unbiasedlearningtorankonlineoroffline,
  title = {Unbiased Learning to Rank: Online or Offline?},
  author = {Qingyao Ai and Tao Yang and Huazheng Wang and Jiaxin Mao},
  year = {2020},
  eprint = {2004.13574},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2004.13574v3},
}