Diabetes Classification using Gain Ratio Feature Selection in Support Vector Machine Method
(1) Universitas Islam Negerti Sultan Syarif Kasim Riau, Pekanbaru
(2) Universitas Islam Negerti Sultan Syarif Kasim Riau, Pekanbaru
(3) Universitas Islam Negerti Sultan Syarif Kasim Riau, Pekanbaru
(4) Universitas Islam Negerti Sultan Syarif Kasim Riau, Pekanbaru
(*) Corresponding Author
Abstract
Diabetes is a major cause of many chronic diseases such as visual impairment, stroke and kidney failure. Early detection especially in groups that have a high risk of developing diabetes needs to be done to prevent problems that have a wide impact. Indonesia is ranked seventh in the world with a prevalence of 10.7% of the total number of people with diabetes. This research aims to determine the attributes in the diabetes dataset that most affect the classification and apply the Support Vector Machine method for diabetes classification. For the determination process, Gain Ratio feature selection technique is applied. The dataset used consists of 768 data with 8 attributes. In this classification process, 3 SVM kernels (Linear, Polynomial, and RBF) are used with three possible data divisions using the ratio (70:30; 80:20; 90:10). Before applying feature selection, there were 8 attributes used and achieved the highest accuracy of 94.81% at a ratio of 80:20 using the RBF kernel with a combination of two parameters namely C = 100, Gamma = 3 and C = 100, Gamma = Scale. Feature selection parameters in the form of thresholds used include 0.02; 0.03; and 0.05. After applying feature selection, the attribute that produces the highest accuracy uses 6 attributes. The highest accuracy after applying feature selection reached 95.45% at a threshold of 0.02 with a ratio of 80:20 using the RBF kernel with parameters C = 100 and Gamma = Scale. The results showed that there was an increase in accuracy after applying feature selection
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DOI: http://dx.doi.org/10.61944/bids.v4i1.114
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