Extracting and Understanding Contrastive Opinion through Topic Relevant Sentences Ebuka Ibeke author Chenghua Lin author Adam Wyner author Mohamad Hardyman Barawi author 2017-11 text Proceedings of the Eighth International Joint Conference on Natural Language Processing (Volume 2: Short Papers) Greg Kondrak editor Taro Watanabe editor Asian Federation of Natural Language Processing Taipei, Taiwan conference publication ibeke-etal-2017-extracting https://aclanthology.org/I17-2067/ 2017-11 395 400