Journal of Advanced Technology and Multidiscipline (JATM)
Vol. 5 No. 1 (2026): Journal of Advanced Technology and Multidiscipline

Classification of Students Online Education Adaptability: Impact of Undersampling vs SMOTE on Decision Tree Performance

Yutika Amelia Effendi (Unknown)
Muhammad Ilham (Universitas Airlangga)
Dina Taubah (Universitas Airlangga)



Article Info

Publish Date
30 Jun 2026

Abstract

Online education has gained unprecedented prominence since the COVID-19 pandemic, highlighting the crucial role of student adaptability in ensuring academic success. In this context, accurately predicting adaptability levels categorized (Low, Moderate, and High) has become a vital research focus. This study investigates such classification using a Decision Tree algorithm and addresses a key limitation found in previous research, which suggested the need to implement oversampling techniques to reduce class confusion, particularly between adjacent categories. A public dataset comprising 1,205 student records was used, originally published by Suzan et al. (2021). The dataset was significantly imbalanced (Moderate: 625, Low: 480, High: 100), implementing the application of two resampling strategies: random undersampling and SMOTE (Synthetic Minority Over-sampling Technique). Results show a clear performance gap between the two approaches. The undersampled model achieved an accuracy of 76.67%, while the SMOTE based model reached 95% accuracy. Improvements were particularly notable in minority class performance.

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Journal Info

Abbrev

JATM

Publisher

Subject

Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Description

Journal of Advanced Technology and Multidiscipline (JATM) aims to explore global knowledge on sciences, information, and advanced technology. JATM provides a place for researchers, engineers, and scientists around the world to build research connections and collaborations as well as sharing ...