Exploring Fine-grained Entity Type Constraints for Distantly Supervised Relation Extraction Yang Liu author Kang Liu author Liheng Xu author Jun Zhao author 2014-08 text Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers Junichi Tsujii editor Jan Hajic editor Dublin City University and Association for Computational Linguistics Dublin, Ireland conference publication liu-etal-2014-exploring https://aclanthology.org/C14-1199/ 2014-08 2107 2116