Klasifikasi Transaksi Penipuan Pada Kartu Kredit Menggunakan Metode Resampling Dan Pembelajaran Mesin
 (*)Mukhlis Febriady  (Universitas Sriwijaya, Palembang, Indonesia)
Samsuryadi Samsuryadi (Universitas Sriwijaya, Palembang, Indonesia)
Dian Palupi Rini (Universitas Sriwijaya, Palembang, Indonesia)
(*) Corresponding Author Submitted: December 22, 2021; Published: April 25, 2022 |
Abstract
The high number of credit card fraud causes a lot of losses for both users and credit service providers. Because the rate of credit card transactions is very fast, it is necessary to detect credit card fraud as early as possible. However, another challenge that is no less important is the amount of data that is imbalanced between valid and invalid transactions. One solution to the problem of data imbalance is to use a resampling method that can improve the quantity of data so that the accuracy results are good. In this study, three types of resampling methods were implemented, SMOTE, bootstrap, and jackknife. Furthermore, to validate the success of the resampling method, three types of machine learning methods were used. The machine learning methods are SVM, ANN, and random forest. From the test results, it was found that the combination of resampling SMOTE and random forest methods produced the best performance with values of accuracy, precision, recall and F1-score of 99.95%, 81.63%, 90.91% and 86.02%, respectively.
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