Automated scoring systems provide multiple benefits but also pose challenges, notably potential bias. Various methods exist to evaluate these algorithms and their outputs for bias. Upon detecting bias, the next logical step is to investigate its cause, often by examining feature distributions. Recently, Johnson and McCaffrey proposed an…

In educational research, a fundamental goal is identifying which skills students have mastered, which skills they have not, and which skills they are in the process of mastering. As the number of examinees, items, and skills increases, the estimation of even simple cognitive diagnosis models becomes difficult. We adopt a faster, simpler approach:…

Discusses the role of certain types of classifications in a modern automated environment. (Author/PF)

The Second International Conference on Educational Data Mining (EDM2009) was held at the University of Cordoba, Spain, on July 1-3, 2009. EDM brings together researchers from computer science, education, psychology, psychometrics, and statistics to analyze large data sets to answer educational research questions. The increase in instrumented…