Sparse Information Extraction: Unsupervised Language Models to the Rescue Doug Downey author Stefan Schoenmackers author Oren Etzioni author 2007-06 text Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics Annie Zaenen editor Antal van den Bosch editor Association for Computational Linguistics Prague, Czech Republic conference publication downey-etal-2007-sparse https://aclanthology.org/P07-1088/ 2007-06 696 703