Exploiting Pinyin Constraints in Pinyin-to-Character Conversion Task: a Class-Based Maximum Entropy Markov Model Approach Jinghui Xiao author Bingquan Liu author Xiaolong Wang author 2007-09 text International Journal of Computational Linguistics & Chinese Language Processing, Volume 12, Number 3, September 2007: Special Issue on Invited Papers from ISCSLP 2006 conference publication xiao-etal-2007-exploiting https://aclanthology.org/O07-5006/ 2007-09 325 348