Dynamic Semantic Graph Construction and Reasoning for Explainable Multi-hop Science Question Answering Weiwen Xu author Huihui Zhang author Deng Cai author Wai Lam author 2021-08 text Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021 Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication xu-etal-2021-dynamic 10.18653/v1/2021.findings-acl.90 https://aclanthology.org/2021.findings-acl.90/ 2021-08 1044 1056