Martin, B.Mitrovic, Antonija2007-08-072007-08-072005Martin, B., Mitrovic, A. (2005) Using learning curves to mine student models. Edinburgh, Scotland, UK: 10th International Conference on User Modeling (UM'2005), 24-29 Jul 2005. Lecture Notes in Computer Science, 3538, 79-88.3-540-27885-0http://hdl.handle.net/10092/341This paper presents an evaluation study that measures the effect of modifying feedback generality in an Intelligent Tutoring System (ITS) based on Student Models. A taxonomy of the tutor domain was used to group existing knowledge elements into plausible, more general, concepts. Existing student models were then used to measure the validity of these new concepts, demonstrating that at least some of these concepts appear to be more effective at capturing what the students learned than the original knowledge elements. We then trialled an experimental ITS that gave feedback at a higher level. The results suggest that it is feasible to use this approach to determine how feedback might be fine-tuned to better suit student learning, and hence that learning curves are a useful tool for mining student models.enConference Contributions - PublishedFields of Research::280000 Information, Computing and Communication Sciences::280200 Artificial Intelligence and Signal and Image Processing::280201 Expert systemsFields of Research::280000 Information, Computing and Communication Sciences::280100 Information Systems::280104 Computer-human interactionhttps://doi.org/10.1007/11527886_12