John Hannon, Kevin McCarthy, Michael P. O'Mahony, Barry Smyth. A Multi-faceted User Model for Twitter. In Judith Masthoff, Bamshad Mobasher, Michel C. Desmarais, Roger Nkambou, editors, User Modeling, Adaptation, and Personalization - 20th International Conference, UMAP 2012, Montreal, Canada, July 16-20, 2012. Proceedings. Volume 7379 of Lecture Notes in Computer Science, pages 303-309, Springer, 2012. [doi]