Relation Extraction Using Label Propagation Based Semi-Supervised Learning Jinxiu Chen author Donghong Ji author Chew Lim Tan author Zhengyu Niu author 2006-07 text Proceedings of the 21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics Nicoletta Calzolari editor Claire Cardie editor Pierre Isabelle editor Association for Computational Linguistics Sydney, Australia conference publication chen-etal-2006-relation 10.3115/1220175.1220192 https://aclanthology.org/P06-1017/ 2006-07 129 136