ENPAR:Enhancing Entity and Entity Pair Representations for Joint Entity Relation Extraction Yijun Wang author Changzhi Sun author Yuanbin Wu author Hao Zhou author Lei Li author Junchi Yan 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 wang-etal-2021-enpar 10.18653/v1/2021.eacl-main.251 https://aclanthology.org/2021.eacl-main.251/ 2021-04 2877 2887