Implementation of Feature Selection Information Gain in Support Vector Machine Method for Stroke Disease Classification
(1) Universitas Islam Negeri Sultan Syarif Kasim Riau, Pekanbaru
(2) Universitas Islam Negeri Sultan Syarif Kasim Riau, Pekanbaru
(3) Universitas Islam Negeri Sultan Syarif Kasim Riau, Pekanbaru
(4) Universitas Islam Negeri Sultan Syarif Kasim Riau, Pekanbaru
(*) Corresponding Author
Abstract
Stroke is a disease with a high mortality and disability rate that requires early detection. However, the main challenge in the classification process of this disease is data imbalance and the large number of irrelevant features in the dataset. This study proposes a combination of Support Vector Machine (SVM) method with Information Gain feature selection technique and data balancing using Synthetic Minority Over-sampling Technique (SMOTE) to improve classification accuracy. The dataset used consists of 5,110 data with 10 variables and 1 label. Feature selection was performed with three threshold values (0.04; 0.01; and 0.0005), while SVM classification was tested on three different kernels: Linear, RBF, and Polynomial. Model evaluation was performed using Confusion Matrix and training and test data sharing using k-fold cross validation with k=10. The best results were obtained on the RBF kernel with Cost=100 and Gamma=5 parameters at an Information Gain threshold of 0.0005, with accuracy reaching 90.51%. These results show that the combination of techniques used aims to determine the variables that most affect SVM classification in detecting stroke disease
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DOI: http://dx.doi.org/10.61944/bids.v4i1.116
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