Opinions Summarization: Aspect Similarity Recognition Relaxes The Constraint of Predefined Aspects Nguyen Huy Tien author Le Tung Thanh author Nguyen Minh Le author 2019-09 text Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2019) Ruslan Mitkov editor Galia Angelova editor INCOMA Ltd. Varna, Bulgaria conference publication huy-tien-etal-2019-opinions 10.26615/978-954-452-056-4_058 https://aclanthology.org/R19-1058/ 2019-09 487 496