Learning with Structured Representations for Negation Scope Extraction Hao Li author Wei Lu author 2018-07 text Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Iryna Gurevych editor Yusuke Miyao editor Association for Computational Linguistics Melbourne, Australia conference publication li-lu-2018-learning 10.18653/v1/P18-2085 https://aclanthology.org/P18-2085/ 2018-07 533 539