S-MART: Novel Tree-based Structured Learning Algorithms Applied to Tweet Entity Linking Yi Yang author Ming-Wei Chang 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 yang-chang-2015-mart 10.3115/v1/P15-1049 https://aclanthology.org/P15-1049/ 2015-07 504 513