Retrieve What You Need: A Mutual Learning Framework for Open-domain Question Answering Dingmin Wang author Qiuyuan Huang author Matthew Jackson author Jianfeng Gao author 2024 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal wang-etal-2024-retrieve 10.1162/tacl_a_00646 https://aclanthology.org/2024.tacl-1.14/ 2024 12 247 263