D. Inkpen, O. Feiguina, and G. Hirst. Proceedings of the AAAI Spring Symposium on Exploring Attitude and
Affect in Text: Theories and Applications, Stanford, California, (2004)
J. Morris, and G. Hirst. Proceedings of the AAAI Spring Symposium on Exploring Attitude and
Affect in Text: Theories and Applications, Stanford, US, (2004)