@inproceedings{lapradorunsupervisedpretraineddense,
  title = {LaPraDoR: Unsupervised Pretrained Dense Retriever for Zero-Shot Text Retrieval},
  author = {Canwen Xu and Daya Guo and Nan Duan and Julian McAuley},
  year = {2022},
  booktitle = {Findings (ACL) 2022 5},
  eprint = {2203.06169},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2203.06169v2},
}