Agreement/Disagreement Classification: Exploiting Unlabeled Data using Contrast Classifiers Sangyun Hahn author Richard Ladner author Mari Ostendorf author 2006-06 text Proceedings of the Human Language Technology Conference of the NAACL, Companion Volume: Short Papers Robert C Moore editor Jeff Bilmes editor Jennifer Chu-Carroll editor Mark Sanderson editor Association for Computational Linguistics New York City, USA conference publication hahn-etal-2006-agreement https://aclanthology.org/N06-2014/ 2006-06 53 56