Automatic Learning of Language Model Structure Kevin Duh author Katrin Kirchhoff author 2004-aug 23–aug 27 text COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics COLING Geneva, Switzerland conference publication duh-kirchhoff-2004-automatic https://aclanthology.org/C04-1022/ 2004-aug 23–aug 27 148 154