BERT-QE: Contextualized Query Expansion for Document Re-ranking Zhi Zheng author Kai Hui author Ben He author Xianpei Han author Le Sun author Andrew Yates author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication zheng-etal-2020-bert 10.18653/v1/2020.findings-emnlp.424 https://aclanthology.org/2020.findings-emnlp.424/ 2020-11 4718 4728