Mitigating False-Negative Contexts in Multi-document Question Answering with Retrieval Marginalization Ansong Ni author Matt Gardner author Pradeep Dasigi 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 ni-etal-2021-mitigating 10.18653/v1/2021.emnlp-main.497 https://aclanthology.org/2021.emnlp-main.497/ 2021-11 6149 6161