Less is More: Significance-Based N-gram Selection for Smaller, Better Language Models Robert C Moore author Chris Quirk author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication moore-quirk-2009-less https://aclanthology.org/D09-1078/ 2009-08 746 755