33rd IEEE Conference on Signal Processing and Communications Applications, SIU 2025, İstanbul, Türkiye, 25 - 28 Haziran 2025, (Tam Metin Bildiri)
Internet of Things (IoT) devices, despite their wide range of applications, often produce datasets with imbalanced class distributions. This imbalance negatively impacts the accuracy of intrusion detection systems. In this study, the Synthetic Minority Over-sampling Technique (SMOTE) was employed to address the class imbalance in data collected from IoT devices. By artificially generating minority class samples, the performance of the K-Nearest Neighbors (KNN) and Support Vector Machine (SVM) algorithms was evaluated. Experiments were conducted on the ToN_IoT dataset, which includes data from seven different IoT devices, and performance was assessed using metrics such as accuracy, precision, and F1-score. The results demonstrate significant improvements in accuracy, particularly for Modbus and motion light devices. KNN showed greater improvement after applying SMOTE, achieving an accuracy of 99.9% for the weather device. This study highlights the effectiveness of SMOTE in mitigating data imbalance in IoT applications.