Dimensions of Subjectivity in Natural Language Wei Chen author 2008-06 text Proceedings of ACL-08: HLT, Short Papers Johanna D Moore editor Simone Teufel editor James Allan editor Sadaoki Furui editor Association for Computational Linguistics Columbus, Ohio conference publication chen-2008-dimensions https://aclanthology.org/P08-2004/ 2008-06 13 16