Unary Constraints for Efficient Context-Free Parsing Nathan Bodenstab author Kristy Hollingshead author Brian Roark author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication bodenstab-etal-2011-unary https://aclanthology.org/P11-2119/ 2011-06 676 681