Phrase Retrieval Learns Passage Retrieval, Too Jinhyuk Lee author Alexander Wettig author Danqi Chen author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication lee-etal-2021-phrase 10.18653/v1/2021.emnlp-main.297 https://aclanthology.org/2021.emnlp-main.297/ 2021-11 3661 3672