Assessment meets Learning: On the relation between Item Response Theory and Bayesian Knowledge Tracing

03/15/2018
by   Benjamin Deonovic, et al.
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Few models have been more ubiquitous in their respective fields than Bayesian knowledge tracing and item response theory. Both of these models were developed to analyze data on learners. However, the study designs that these models are designed for differ; Bayesian knowledge tracing is designed to analyze longitudinal data while item response theory is built for cross-sectional data. This paper illustrates a fundamental connection between these two models. Specifically, the stationary distribution of the latent variable and the observed response variable in Bayesian knowledge Tracing are related to an item response theory model. Furthermore, recent advances in network psychometrics demonstrate how this relationship can be exploited and generalized to a network model.

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