SphereRE: Distinguishing Lexical Relations with Hyperspherical Relation Embeddings Chengyu Wang author Xiaofeng He author Aoying Zhou 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 wang-etal-2019-spherere 10.18653/v1/P19-1169 https://aclanthology.org/P19-1169/ 2019-07 1727 1737