Answering Ambiguous Questions through Generative Evidence Fusion and Round-Trip Prediction Yifan Gao author Henghui Zhu author Patrick Ng author Cicero Nogueira dos Santos author Zhiguo Wang author Feng Nan author Dejiao Zhang author Ramesh Nallapati author Andrew O Arnold author Bing Xiang author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication gao-etal-2021-answering 10.18653/v1/2021.acl-long.253 https://aclanthology.org/2021.acl-long.253/ 2021-08 3263 3276