VietSentiLex: a sentiment dictionary that considers the polarity of ambiguous sentiment words Huynh Quoc Viet Vo author Kazuhide Yamamoto author 2018-1–3 dec text Proceedings of the 32nd Pacific Asia Conference on Language, Information and Computation Stephen Politzer-Ahles editor Yu-Yin Hsu editor Chu-Ren Huang editor Yao Yao editor Association for Computational Linguistics Hong Kong conference publication vo-yamamoto-2018-vietsentilex https://aclanthology.org/Y18-1081/ 2018-1–3 dec