Multi-Grained Knowledge Retrieval for End-to-End Task-Oriented Dialog Fanqi Wan author Weizhou Shen author Ke Yang author Xiaojun Quan author Wei Bi author 2023-07 text Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication wan-etal-2023-multi 10.18653/v1/2023.acl-long.627 https://aclanthology.org/2023.acl-long.627/ 2023-07 11196 11210