Improved Smoothing for N-gram Language Models Based on Ordinary Counts Robert C Moore author Chris Quirk author 2009-08 text Proceedings of the ACL-IJCNLP 2009 Conference Short Papers Keh-Yih Su editor Jian Su editor Janyce Wiebe editor Haizhou Li editor Association for Computational Linguistics Suntec, Singapore conference publication moore-quirk-2009-improved https://aclanthology.org/P09-2088/ 2009-08 349 352