A Comparison and Improvement of Online Learning Algorithms for Sequence Labeling Zhengyan He author Houfeng Wang author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication he-wang-2012-comparison https://aclanthology.org/C12-1070/ 2012-12 1147 1162