Unsupervised Models for Coreference Resolution Vincent Ng author 2008-10 text Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing Mirella Lapata editor Hwee Tou Ng editor Association for Computational Linguistics Honolulu, Hawaii conference publication ng-2008-unsupervised https://aclanthology.org/D08-1067/ 2008-10 640 649