Span Detection for Aspect-Based Sentiment Analysis in Vietnamese Kim Nguyen Thi Thanh author Sieu Huynh Khai author Phuc Pham Huynh author Luong Phan Luc author Duc-Vu Nguyen author Kiet Nguyen Van author 2021-11 text Proceedings of the 35th Pacific Asia Conference on Language, Information and Computation Kaibao Hu editor Jong-Bok Kim editor Chengqing Zong editor Emmanuele Chersoni editor Association for Computational Lingustics Shanghai, China conference publication thanh-etal-2021-span https://aclanthology.org/2021.paclic-1.34/ 2021-11 318 328