汉语否定焦点识别研究:数据集与基线系统(Research on Chinese Negative Focus Identification: Dataset and Baseline) Jiaxuan Sheng author Bowei Zou author Longxiang Shen author Jing Ye author Yu Hong author 2020-10 text zho Proceedings of the 19th Chinese National Conference on Computational Linguistics Maosong Sun editor Sujian Li editor Yue Zhang editor Yang Liu editor Chinese Information Processing Society of China Haikou, China conference publication sheng-etal-2020-yi https://aclanthology.org/2020.ccl-1.51/ 2020-10 550 560