Beyond the code-and-count analysis of tutoring dialogues - Stellan Ohlsson; Barbara Di Eugenio; Bettina Chow; Davide Fossati; Xin Lu; Trina C. Kershaw (Artificial Intelligence in Education, Building Technology Rich Learning Contexts That Work, Proceedings of the 13th International Conference on Artificial Intelligence in Education, AIED 2007, July 9-13, 2007, Los Angeles, California, USA, 2007)