Multi-grained Named Entity Recognition Congying Xia author Chenwei Zhang author Tao Yang author Yaliang Li author Nan Du author Xian Wu author Wei Fan author Fenglong Ma author Philip Yu author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication xia-etal-2019-multi 10.18653/v1/P19-1138 https://aclanthology.org/P19-1138/ 2019-07 1430 1440