This book presents research about comparison between the efficiency of unsupervised and supervised discretization methods for educational data from blended learning environment. Naïve Bayes classifier was trained for each discretized data set and comparative analysis of prediction models was conducted. The research goal was to transform numeric features into maximum independent discrete values with minimum loss of information and reduction of classification error. Proposed unsupervised discretization method was based on the histogram distribution and implementation of oversampling technique. The main contribution of this research is improvement of prediction accuracy using unsupervised discretization method which reducing the effect of ignoring class feature for educational data set.

Autorentext

Gabrijela Dimi recieved MSc from Technical faculty, University of Novi Sad. She enrolled her PhD studies in Faculty of electronic engineering in Ni, study programme: computer science and informatics. She currently works as teaching assistant on High School of Electrical Engineering and Computer Science of Applied Studies in Belgrade.