Lifelong-RL: Lifelong Relaxation Labeling for Separating Entities and Aspects in Opinion Targets Lei Shu author Bing Liu author Hu Xu author Annice Kim author 2016-11 text Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing Jian Su editor Kevin Duh editor Xavier Carreras editor Association for Computational Linguistics Austin, Texas conference publication shu-etal-2016-lifelong 10.18653/v1/D16-1022 https://aclanthology.org/D16-1022/ 2016-11 225 235