Toward Contextual Valence Shifters in Vietnamese Reviews Thien Khai Tran author Tuoi Thi Phan author 2017-11 text Proceedings of the 29th Conference on Computational Linguistics and Speech Processing (ROCLING 2017) Lun-Wei Ku editor Yu Tsao editor The Association for Computational Linguistics and Chinese Language Processing (ACLCLP) Taipei, Taiwan conference publication tran-phan-2017-toward https://aclanthology.org/O17-1016/ 2017-11 152 159