OleNet at SemEval-2019 Task 9: BERT based Multi-Perspective Models for Suggestion Mining Jiaxiang Liu author Shuohuan Wang author Yu Sun author 2019-06 text Proceedings of the 13th International Workshop on Semantic Evaluation Jonathan May editor Ekaterina Shutova editor Aurelie Herbelot editor Xiaodan Zhu editor Marianna Apidianaki editor Saif M Mohammad editor Association for Computational Linguistics Minneapolis, Minnesota, USA conference publication liu-etal-2019-olenet 10.18653/v1/S19-2216 https://aclanthology.org/S19-2216/ 2019-06 1231 1236