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@article{1338740,
author = {Pelánek, Radek and Jarušek, Petr},
article_number = {4},
doi = {http://dx.doi.org/10.1007/s40593-015-0048-x},
keywords = {student modeling; problem solving; time},
language = {eng},
issn = {1560-4292},
journal = {International Journal of Artificial Intelligence in Education},
title = {Student Modeling Based on Problem Solving Times},
volume = {25},
year = {2015}
}
TY - JOUR
ID - 1338740
AU - Pelánek, Radek - Jarušek, Petr
PY - 2015
TI - Student Modeling Based on Problem Solving Times
JF - International Journal of Artificial Intelligence in Education
VL - 25
IS - 4
SP - 493-519
EP - 493-519
SN - 15604292
KW - student modeling
KW - problem solving
KW - time
N2 - Student modeling in intelligent tutoring systems is mostly concerned with modeling correctness of students' answers. As interactive problem solving activities become increasingly common in educational systems, it is useful to focus also on timing information associated with problem solving. We argue that the focus on timing is natural for certain types of educational problems and we describe a simple model of problem solving times which assumes a linear relationship between a latent problem solving skill and a logarithm of a time to solve a problem. The model is closely related to models from two different areas: the item response theory and collaborative filtering. We describe two parameter estimation techniques for the model and several extensions - models with multidimensional skill, learning, or variability of performance. We describe an application of the proposed models in a widely used computerized practice system. Using both simulated data and real data from the system we evaluate the model, analyse its parameter values, and discuss the insight into problem difficulty which the model brings.
ER -
PELÁNEK, Radek a Petr JARUŠEK. Student Modeling Based on Problem Solving Times. \textit{International Journal of Artificial Intelligence in Education}. 2015, roč.~25, č.~4, s.~493-519. ISSN~1560-4292. Dostupné z: https://dx.doi.org/10.1007/s40593-015-0048-x.
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