Coupled Sequence Labeling on Heterogeneous Annotations: POS Tagging as a Case Study Zhenghua Li author Jiayuan Chao author Min Zhang author Wenliang Chen author 2015-07 text Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Michael Strube editor Association for Computational Linguistics Beijing, China conference publication li-etal-2015-coupled 10.3115/v1/P15-1172 https://aclanthology.org/P15-1172/ 2015-07 1783 1792