Determining Term Subjectivity and Term Orientation for Opinion Mining Andrea Esuli author Fabrizio Sebastiani author 2006-04 text 11th Conference of the European Chapter of the Association for Computational Linguistics Diana McCarthy editor Shuly Wintner editor Association for Computational Linguistics Trento, Italy conference publication esuli-sebastiani-2006-determining https://aclanthology.org/E06-1025/ 2006-04 193 200