International Journal of Modern Education and Computer Science (IJMECS)
IJMECS Vol. 8, No. 7, 8 Jul. 2016
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Detecting Anomalies in Students‟ Results Using Decision Trees
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Author(s)
Hamza O. Salami
1,*
Ruqayyah S. Ibrahim
1
Mohammed O. Yahaya
2
Index Terms
Decision trees, examination results, anomaly detection, educational data mining, result anomaly
Abstract
Examinations are one of the most important activities that take place in institutions of learning. In many Nigerian universities, series of meetings are held to manually examine and approve computed student examination results. During such meetings, students‟ results are scrutinized. Reasonable explanations must be provided for any anomaly that is discovered in a result before the result is approved. This result approval process is prone to some challenges such as fatigue arising from the long duration of the meetings and wastage of man-hours that could have been used for other productive tasks. The aim of this work is to build decision tree models for automatically detecting anomalies in students‟ examination results. The Waikato Environment for Knowledge Analysis (WEKA) data mining workbench was used to build decision tree models, which generated interesting rules for each anomaly. Results of the study yielded high performances when evaluated using accuracy, sensitivity and specificity. Moreover, a Windows-based anomaly detection tool was built which incorporated the decision tree rules.
Cite This Paper
Hamza O. Salami, Ruqayyah S. Ibrahim, Mohammed O. Yahaya, "Detecting Anomalies in Students' Results Using Decision Trees", International Journal of Modern Education and Computer Science(IJMECS), Vol.8, No.7, pp.31-40, 2016. DOI:10.5815/ijmecs.2016.07.04
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