Unsupervised Relation Disambiguation Using Spectral Clustering Jinxiu Chen author Donghong Ji author Chew Lim Tan author Zhengyu Niu author 2006-07 text Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions Association for Computational Linguistics Sydney, Australia conference publication chen-etal-2006-unsupervised https://aclanthology.org/P06-2012/ 2006-07 89 96