A comparison of Bayesian estimators for unsupervised Hidden Markov Model POS taggers Jianfeng Gao author Mark Johnson author 2008-10 text Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing Mirella Lapata editor Hwee Tou Ng editor Association for Computational Linguistics Honolulu, Hawaii conference publication gao-johnson-2008-comparison https://aclanthology.org/D08-1036/ 2008-10 344 352