Progressive Self-Supervised Attention Learning for Aspect-Level Sentiment Analysis Jialong Tang author Ziyao Lu author Jinsong Su author Yubin Ge author Linfeng Song author Le Sun author Jiebo Luo author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication tang-etal-2019-progressive 10.18653/v1/P19-1053 https://aclanthology.org/P19-1053/ 2019-07 557 566