Efficient Document Retrieval by End-to-End Refining and Quantizing BERT Embedding with Contrastive Product Quantization Zexuan Qiu author Qinliang Su author Jianxing Yu author Shijing Si author 2022-12 text Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing Yoav Goldberg editor Zornitsa Kozareva editor Yue Zhang editor Association for Computational Linguistics Abu Dhabi, United Arab Emirates conference publication qiu-etal-2022-efficient 10.18653/v1/2022.emnlp-main.54 https://aclanthology.org/2022.emnlp-main.54/ 2022-12 853 863