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@inproceedings{1068895, author = {Pelánek, Radek and Jarušek, Petr}, address = {Heidelberg}, booktitle = {Proceeding ITS'12 Proceedings of the 11th international conference on Intelligent Tutoring Systems}, doi = {http://dx.doi.org/10.1007/978-3-642-30950-2_49}, editor = {Springer}, keywords = {Problem solving; intelligent tutoring systems; item response theory.}, howpublished = {tištěná verze "print"}, language = {eng}, location = {Heidelberg}, isbn = {978-3-642-30949-6}, pages = {379-388}, publisher = {Springer Berlin / Heidelberg}, title = {Analysis of a simple model of problem solving times}, url = {http://www.fi.muni.cz/~xpelanek/publications/its12.pdf}, year = {2012} }
TY - JOUR ID - 1068895 AU - Pelánek, Radek - Jarušek, Petr PY - 2012 TI - Analysis of a simple model of problem solving times PB - Springer Berlin / Heidelberg CY - Heidelberg SN - 9783642309496 KW - Problem solving KW - intelligent tutoring systems KW - item response theory. UR - http://www.fi.muni.cz/~xpelanek/publications/its12.pdf N2 - Our aim is to improve problem selection and recommendation in intelligent tutoring systems by modeling students problem solving times. We describe a simple model which assumes a linear relationship between latent problem solving ability and a logarithm of time to solve a problem. We show that this model is related to models from two different areas: the item response theory and collaborative filtering. Each of these areas provides inspiration for parameter estimation procedure and for possible extensions. The model is already applied in a widely used "Problem solving tutor"; using the data collected by this system we evaluate the model and analyse its parameter values. ER -
PELÁNEK, Radek and Petr JARUŠEK. Analysis of a simple model of problem solving times. In Springer. \textit{Proceeding ITS'12 Proceedings of the 11th international conference on Intelligent Tutoring Systems}. Heidelberg: Springer Berlin / Heidelberg, 2012, p.~379-388. ISBN~978-3-642-30949-6. Available from: https://dx.doi.org/10.1007/978-3-642-30950-2\_{}49.
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