Unsupervised Relation Extraction by Mining Wikipedia Texts Using Information from the Web Yulan Yan author Naoaki Okazaki author Yutaka Matsuo author Zhenglu Yang author Mitsuru Ishizuka author 2009-08 text Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP Keh-Yih Su editor Jian Su editor Janyce Wiebe editor Haizhou Li editor Association for Computational Linguistics Suntec, Singapore conference publication yan-etal-2009-unsupervised https://aclanthology.org/P09-1115/ 2009-08 1021 1029