Class Imbalanced Learning Menggunakan Algoritma Synthetic Minority Over-sampling Technique – Nominal (SMOTE-N) pada Dataset Tuberculosis Anak
DOI:
https://doi.org/10.24002/jbi.v10i2.2441Abstract
Abstract.
Class Imbalanced Learning (CIL) is the learning process for data representation and information extraction with severe data distribution to develop effective decisions supporting the decision-making process. SMOTE-N is one of the data level approach in CIL using over-sampling method. It generates synthetic instances to balance its minority class. This research applied SMOTE-N on Children Tuberculosis Dataset that has class imbalance. Over-sampling method is chosen to avoid important information loss because the Childhood Tuberculosis Dataset has a small number of instances. The Naive Bayes Classifier has been applied to the balance dataset to evaluate its model. The results show that SMOTE-N can improve CIL performance metrics.
Keywords: Class Imbalance Learning, Over-sampling, SMOTE-N, Naïve Bayes Classifier
Abstrak.
Class Imbalance Learning (CIL) merupakan proses pembelajaran untuk representasi data dan ekstraksi informasi dengan distribusi data yang buruk untuk mendukung pembuatan keputusan yang efektif dalam proses pengambilan keputusan. SMOTE-N adalah salah satu pendekatan data-level dalam CIL mengunakan metode over-sampling. SMOTE-N menghasilkan instance sintesis untuk menyeimbangkan jumlah instance pada kelas minoritasnya. Penelitian ini mengaplikasikan SMOTE-N pada dataset Tuberculosis Anak (TB Anak) yang memiliki ketidakseimbangan kelas. Metode over-sampling dipilih untuk menghindari kehilangan informasi yang penting dikarenakan dataset TB Anak memiliki jumlah instance yang sedikit. Naïve Bayes Classifier digunakan untuk mengevaluasi model dari dataset yang sudah seimbang. Hasilnya menunjukkan bahwa SMOTE-N dapat meningkatkan kinerja pada CIL.
Kata Kunci: Class Imbalance Learning, Over-sampling, SMOTE-N, Naïve Bayes Classifier
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