HITSZ-ICRC: A Report for SMM4H Shared Task 2019-Automatic Classification and Extraction of Adverse Effect Mentions in Tweets Shuai Chen author Yuanhang Huang author Xiaowei Huang author Haoming Qin author Jun Yan author Buzhou Tang author 2019-08 text Proceedings of the Fourth Social Media Mining for Health Applications (#SMM4H) Workshop & Shared Task Davy Weissenbacher editor Graciela Gonzalez-Hernandez editor Association for Computational Linguistics Florence, Italy conference publication chen-etal-2019-hitsz 10.18653/v1/W19-3206 https://aclanthology.org/W19-3206/ 2019-08 47 51