NLANGP: Supervised Machine Learning System for Aspect Category Classification and Opinion Target Extraction Zhiqiang Toh author Jian Su author 2015-06 text Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015) Preslav Nakov editor Torsten Zesch editor Daniel Cer editor David Jurgens editor Association for Computational Linguistics Denver, Colorado conference publication toh-su-2015-nlangp 10.18653/v1/S15-2083 https://aclanthology.org/S15-2083/ 2015-06 496 501