Lagrangian Relaxation for Inference in Natural Language Processing Michael Collins author 2011-10 text Proceedings of the 12th International Conference on Parsing Technologies Harry Bunt editor Joakim Nivre editor Özlem Çetinoglu editor Association for Computational Linguistics Dublin, Ireland conference publication collins-2011-lagrangian https://aclanthology.org/W11-2918/ 2011-10 150