@inproceedings{bertqecontextualizedqueryexpansionfor,
  title = {BERT-QE: Contextualized Query Expansion for Document Re-ranking},
  author = {Zhi Zheng and Kai Hui and Ben He and Xianpei Han and Le Sun and Andrew Yates},
  year = {2020},
  booktitle = {Findings of the Association for Computational Linguistics 2020},
  eprint = {2009.07258},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2009.07258v2},
}