Homotopy-Based Semi-Supervised Hidden Markov Models for Sequence Labeling Gholamreza Haffari author Anoop Sarkar author 2008-08 text Proceedings of the 22nd International Conference on Computational Linguistics (Coling 2008) Donia Scott editor Hans Uszkoreit editor Coling 2008 Organizing Committee Manchester, UK conference publication haffari-sarkar-2008-homotopy https://aclanthology.org/C08-1039/ 2008-08 305 312