Distant Supervised Relation Extraction with Separate Head-Tail CNN Rui Xing author Jie Luo author 2019-11 text Proceedings of the 5th Workshop on Noisy User-generated Text (W-NUT 2019) Wei Xu editor Alan Ritter editor Tim Baldwin editor Afshin Rahimi editor Association for Computational Linguistics Hong Kong, China conference publication xing-luo-2019-distant 10.18653/v1/D19-5533 https://aclanthology.org/D19-5533/ 2019-11 249 258