Analysis of a simple model of problem solving times
| Authors | |
|---|---|
| Year of publication | 2012 |
| Type | Article in Proceedings |
| Conference | Proceeding ITS'12 Proceedings of the 11th international conference on Intelligent Tutoring Systems |
| MU Faculty or unit | |
| Citation | |
| Web | http://www.fi.muni.cz/~xpelanek/publications/its12.pdf |
| Doi | http://dx.doi.org/10.1007/978-3-642-30950-2_49 |
| Field | Informatics |
| Keywords | Problem solving; intelligent tutoring systems; item response theory. |
| Description | 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. |
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