Publication details

Application of Time Decay Functions and the Elo System in Student Modeling



Year of publication 2014
Type Article in Proceedings
Conference Proceedings of the 7th International Conference on Educational Data Mining (EDM 2014)
MU Faculty or unit

Faculty of Informatics

Field Informatics
Keywords adaptive learning; student modeling; Elo rating system
Description One of the key aspects of educational data mining is estimation of student skills. This estimation is complicated by the fact that students skills change during the use of an educational system. In this work we study two flexible approaches to skill estimation: time decay functions and the Elo rating system. Results of experiments in several different settings show that these simple approaches provide good and consistent performance. We argue that since these approaches have several pragmatical advantages (flexibility, speed, ease of application) they should be considered in educational data mining at least as a baseline approach.
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