Two Training Strategies for Improving Relation Extraction over Universal Graph Qin Dai author Naoya Inoue author Ryo Takahashi author Kentaro Inui author 2021-04 text Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume Paola Merlo editor Jorg Tiedemann editor Reut Tsarfaty editor Association for Computational Linguistics Online conference publication dai-etal-2021-two 10.18653/v1/2021.eacl-main.321 https://aclanthology.org/2021.eacl-main.321/ 2021-04 3673 3684