Shi Yanan author Tan Yanxin author Feng Fangxiang author Zheng Chunping author Wang Xiaojie author 2021-08 text eng Sheng Li editor Maosong Sun editor Yang Liu editor Hua Wu editor Kang Liu editor Wanxiang Che editor Shizhu He editor Gaoqi Rao editor Chinese Information Processing Society of China Huhhot, China conference publication yanan-etal-2021-category https://aclanthology.org/2021.ccl-1.89/ 2021-08 1000 1011