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All Journal ELKHA : Jurnal Teknik Elektro Jurnas Nasional Teknologi dan Sistem Informasi Sinkron : Jurnal dan Penelitian Teknik Informatika Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Jurnal Sisfokom (Sistem Informasi dan Komputer) Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Building of Informatics, Technology and Science Jurnal Mantik Infotekmesin Jurnal Informatika dan Rekayasa Perangkat Lunak Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Teknik Informatika (JUTIF) Jurnal Algoritma Jurnal Informatika: Jurnal Pengembangan IT INOVTEK Polbeng - Seri Informatika
Wildanil Ghozi
Universitas Dian Nuswantoro
Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences

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Journal : Building of Informatics, Technology and Science

 1 
Impact of SMOTE for Imbalance Class in DDoS Attack Detection Using Deep Learning MLP Ilma, Zidni; Ghozi, Wildanil; Rafrastara, Fauzi Adi
Building of Informatics, Technology and Science (BITS) Vol 6 No 4 (2025): March 2025
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v6i4.6727

Abstract

DDoS attacks, which are becoming increasingly complex and frequent, pose significant challenges to network security, particularly with the rise of cyber exploitation of infrastructure. A major issue in detecting these attacks is the imbalance between normal traffic and attack data, which causes machine learning models to be biased toward the majority class. To address this, this study proposes the use of the Synthetic Minority Over-sampling Technique (SMOTE) to balance the CIC-DDoS2019 dataset, successfully enhancing the performance of a Multi-Layer Perceptron (MLP) in detecting various types of attacks. Analysis results indicate that, on the original dataset without SMOTE, the model achieved high accuracy but low F1-Score for minority classes, highlighting difficulties in recognizing underrepresented attack patterns. After applying SMOTE, the F1-Score significantly improved for minority classes, demonstrating the model's enhanced ability to identify attack patterns. All dataset subsets showed improved performance across key evaluation metrics, indicating that SMOTE effectively expanded the model's decision boundary for minority classes, enabling MLP to detect DDoS attacks more accurately in previously challenging data patterns. This approach illustrates increased model sensitivity to minority feature distributions without significantly compromising performance on majority classes.
Prediksi Potensi Kinerja Calon Karyawan Customer Service Call Center Menggunakan Model Machine Learning Berbasis Data Rekrutmen Pratama, Andriyan Yoga; Ghozi, Wildanil
Building of Informatics, Technology and Science (BITS) Vol 7 No 1 (2025): June (2025)
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v7i1.7285

Abstract

Employee selection process is a critical stage for companies in acquiring high-quality human resources (HR), particularly for customer service call center positions that demand excellent communication skills and strong work endurance. Data-driven recruitment methods have demonstrated improved accuracy compared to traditional, often subjective, approaches. This study aims to develop a predictive model to assess the potential performance of candidates during the HR interview stage, based on educational background, work experience, and other relevant factors, using machine learning algorithms. The dataset utilized includes demographic information, education levels, previous work experience, and other factors that may influence candidate performance in customer service roles. The models tested in this study include Decision Tree, Random Forest, and Artificial Neural Network algorithms. The analysis shows that GPA, prior work experience, and organizational involvement significantly correlate with the potential performance of candidates. The application of machine learning in the recruitment process can enhance selection effectiveness and improve HR efficiency. Through this approach, companies are expected to make more accurate hiring decisions and select the best candidates with greater precision.
Optimasi Deteksi Malware Android pada Dataset Drebin Menggunakan Ensemble Learning Usmany, Haidar Nafiis; Ghozi, Wildanil
Building of Informatics, Technology and Science (BITS) Vol 7 No 4 (2026): March 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v7i4.9443

Abstract

The increasing number and complexity of Android malware require detection systems that are accurate, efficient, and capable of handling high-dimensional data. Machine learning–based approaches have become one of the widely adopted solutions in cybersecurity research. However, the performance of classification models is often affected by feature redundancy and suboptimal hyperparameter configurations. This study aims to evaluate the effectiveness of combining Random Forest–based feature selection with modern boosting classification algorithms for Android malware detection. The dataset used in this study is the Drebin 215 dataset, which was selected because it is one of the most widely used benchmark datasets for Android malware detection based on static analysis, enabling more objective comparison with previous studies. Feature selection was performed using the Random Forest feature importance method to reduce data dimensionality prior to the classification stage. The classification models employed include XGBoost, Light Gradient Boosting Machine (LightGBM), and CatBoost. The experiments were conducted under two scenarios: without hyperparameter optimization (non-tuning) and with hyperparameter optimization using the Grid Search method. Model performance was evaluated using accuracy, precision, recall, F1-score, and ROC-AUC metrics, as well as computational time analysis. The experimental results show that all models achieved very strong classification performance on the Drebin benchmark dataset, with accuracy values exceeding 0.98. Among the evaluated models, LightGBM achieved the best performance, with an accuracy of 0.9900 and an F1-score of 0.9865. This performance advantage is likely influenced by the efficiency of its histogram-based learning mechanism and leaf-wise tree growth strategy, which enables faster and more effective learning on high-dimensional data. Nevertheless, the high performance observed on this benchmark dataset still requires further evaluation on more diverse datasets or dynamic environments to ensure the generalization capability of the model in real-world scenarios. The findings of this study indicate that the combination of Random Forest–based feature selection and boosting algorithms can serve as an effective approach for improving the efficiency and performance of Android malware detection systems.
Co-Authors Abdus Salam, Abdus Abdussalam Abdussalam, Abdussalam Adi Nugroho, Fahmi Bahtiar Adi Rafrastara, Fauzi Anargya, Muhammad Alden Nayef Bintoro, Jevan Catur Supriyanto Chaerul Umam Dwi Puji Prabowo, Dwi Puji Elkaf Rahmawan Pramudya Fauzi Adi Rafrastara Gustina Alfa Trisnapradika Heribertus Himawan Heru Lestiawan Hussein, Jasim Nadheer Hussein, Jassim Nadheer Ilma, Zidni L. Budi Handoko Latifah, Ines Aulia Maharrani, Ratih Hafsarah Oki Setiono Osman, Waleed Mahgoub Paramita, Cinantya Pramudya, Elkaf Pratama, Andriyan Yoga Putra Hartanto, Octaviano Ryan Eka Ramadhan Rakhmat Sani Ramadhani, Arsabilla Retno Astuti Setijaningsih Ricardus Anggi Pramunendar Rosyada, Salma Saputra, Ardi Tyas, Wahyu Suryaning Usmany, Haidar Nafiis Widyanto Utomo, Arya Yassin, Warusia Yuminah Yuminah