Lifelong Learning for Sentiment Classification Zhiyuan Chen author Nianzu Ma author Bing Liu author 2015-07 text Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers) Chengqing Zong editor Michael Strube editor Association for Computational Linguistics Beijing, China conference publication chen-etal-2015-lifelong 10.3115/v1/P15-2123 https://aclanthology.org/P15-2123/ 2015-07 750 756