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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Prosiding SNATIF Jurnal Edukasi dan Penelitian Informatika (JEPIN) Infotech Journal Jurnal Ilmiah Matrik IKRA-ITH Informatika : Jurnal Komputer dan Informatika JITTER (Jurnal Ilmiah Teknologi Informasi Terapan) Jiko (Jurnal Informatika dan komputer) JURIKOM (Jurnal Riset Komputer) JUMANJI (Jurnal Masyarakat Informatika Unjani) MIND (Multimedia Artificial Intelligent Networking Database) Journal Jurnal Tekno Kompak METIK JURNAL Building of Informatics, Technology and Science Jurnal Informatika dan Rekayasa Elektronik JATI (Jurnal Mahasiswa Teknik Informatika) JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) JIKA (Jurnal Informatika) JOINT (Journal of Information Technology jurnal syntax admiration Jurnal Teknologi Informatika dan Komputer Innovation in Research of Informatics (INNOVATICS) Informatics and Digital Expert (INDEX) Jurnal Ilmiah Wahana Pendidikan Journal of Informatics and Communication Technology (JICT) Jurnal Locus Penelitian dan Pengabdian Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) Jurnal Algoritma Jurnal Sosial dan Sains Riwayat: Educational Journal of History and Humanities Jurnal Global Ilmiah Journal of Informatics and Communication Technology (JICT) Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK)
Fajri Rakhmat Umbara
Fakultas Sains Dan Informatika Universitas Jenderal Achmad Yani, Cimahi, Indonesia
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Journal : Jurnal Algoritma

 1 
Peningkatan Klasifikasi Serangan DDoS pada SDN Menggunakan XGBoost dan RAMOBoost Badar, Ahmad; Rakhmat Umbara, Fajri; Nurul Sabrina, Puspita
Jurnal Algoritma Vol 22 No 2 (2025): Jurnal Algoritma
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/algoritma/v.22-2.2460

Abstract

The aim of this study is to detect Distributed Denial of Service (DDoS) attacks in Software Defined Networking (SDN) environments using the XGBoost algorithm and the RAMOBoost balancing technique to address the issue of data imbalance. SDN offers flexibility in network management but remains vulnerable to DDoS attacks. The dataset used in this research consists of two classes (normal and attack) with an imbalanced distribution. XGBoost was chosen for its ability to deliver accurate predictions, while RAMOBoost was employed to enhance data representation for the minority class. The results show that before balancing, the model achieved 100% precision for the majority class and 96% precision for the minority class, with recall values of 97% and 100%, respectively. After applying RAMOBoost, precision and recall became more balanced, ranging between 97%–99%, while maintaining a high overall accuracy of 98%. Grouped Feature Importance analysis revealed that randomizing important features reduced accuracy from 97.88% to 49.78%, whereas randomizing unimportant features only slightly decreased accuracy to 97.82%. The main contribution of this study lies in the combined application of RAMOBoost and XGBoost, which proved effective in improving classification performance on imbalanced datasets, and in emphasizing the critical role of feature selection in maintaining model stability. These findings provide valuable insights for network administrators in developing effective attack detection systems for SDN environments.
Implementasi Yolo Untuk Menghitung Kepadatan Kendaraan Tempat Parkir Hidayat, Ferdian Afza; Umbara, Fajri Rakhmat; Ilyas, Ridwan
Jurnal Algoritma Vol 22 No 2 (2025): Jurnal Algoritma
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/algoritma/v.22-2.2919

Abstract

The significant increase in the number of vehicles entering the Universitas Jenderal Achmad Yani area—especially after the construction of the Faculty of Science and Informatics building—has caused congestion at several strategic points on campus, including the area in front of the campus mosque. This study aims to develop a real-time vehicle density monitoring system to support more efficient campus traffic management. The method used involves applying the YOLOv5 object detection algorithm to identify and count vehicles from video recordings in selected monitoring areas. The system is designed to deliver fast and accurate detection while providing real-time vehicle density information. Testing results show that the system achieved strong detection performance, with a maximum precision value of 1.00 at a confidence threshold of 0.983. The maximum recall value of 0.90 was obtained at a lower confidence threshold, reflecting the system’s ability to detect most objects present. These findings highlight the trade-off between model confidence in predictions and its ability to avoid missing relevant objects. The contribution of this study is the development of a prototype system capable of automatically and in real time monitoring vehicle density in campus areas. This system has the potential to become part of a smarter, data-driven campus traffic management solution to reduce congestion and improve the comfort and mobility of the academic community.
Klasifikasi Indeks Standar Pencemaran Udara Menggunakan Algoritma Catboost Dengan Teknik Balancing Data Random UnderSampling Aditya, Aldy; Umbara, Fajri Rakhmat; Sabrina, Puspita Nurul
Jurnal Algoritma Vol 22 No 2 (2025): Jurnal Algoritma
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/algoritma/v.22-2.2971

Abstract

Air quality is an important factor that affects public health and the environment. The Air Pollution Index is used as an indicator to measure the level of air pollution in a region. The main challenge in the air quality classification process is the imbalance of data that can affect the modeling results. This study aims to analyze the performance of the Categorical Boosting (CatBoost) algorithm in ISPU classification by applying the Random Under sampling technique to overcome class imbalance. The dataset used was obtained from air quality monitoring in DKI Jakarta for the period 2020–2024 with a total of 5,386 records and 12 attributes. The research stages included data collection, data cleaning, data transformation, data balancing, feature selection using Recursive Feature Elimination (RFE), modeling with CatBoost, and model evaluation using a confusion matrix. The feature selection results showed five main features that had the most influence, namely PM10, PM2.5, SO2, NO2, and max. The CatBoost model built with the best parameters produced an accuracy of 98 percent, precision of 100 percent, recall of 98.91 percent, and an F1-score of 99.44 percent. Thus, the application of CatBoost and Random Under sampling techniques proved to be effective in improving ISPU classification performance. The results of this study are expected to be used as a decision support system in efforts to mitigate the impact of air pollution in DKI Jakarta.
Co-Authors -, Agus Komarudin -, Ridwan Ilyas Adam, Marcellino Ade Kania Ningsih Aditya Bahrul 'Alam, Moch Aditya, Aldy Adzani, Nadhif Nurul Fajri AGIEL FADILLAH HERMAWAN Agri Yodi Prayoga Ahsin Fauzi Aldi Sidik Permana Anwar Fauzi, Mochammad Ardiyansyah, Muhamad Salman Ashaury, Herdi Asrul Badar, Ahmad Cepi, Gan Dava Maulana, Muhammad Delfany Arcadia Valeska Destiyanti, Fitri Dewi Kartika Sari Dewi, Wulan Dian Nursantika Drl, Indra Raja Ella Wahyu Guntari Erna Sesarliana* Fadhilahsyah Ramadhan, Muhammad Diky Faiza Renaldi Fauzan, Ariq Febriansyah Istianto, Andrian Ferdiansyah Ferdian FERDIANSYAH, ALDOVA fery bayu aji FIQRI FAKHRUL GUNAWAN Firmansyah, Rolan Fitri Nurbaya Gestavito, Rio Ginanjar Rahayu Gita Mahesa Hadiana, Asep Id Hasna, Aisyah Nur Hendro, Tacbir Herdi Ashaury Hidayat, Ferdian Afza Hidayat, Mazid Hidayatulah Himawan Hovi Sohibul Wafa Hovi Hovi, Hovi Sohibul Wafa Ilham Danoppati Junior, Rifqi Pratama Kahfi, Muhammad Dzatul Kasyidi, Fatan Kharis Pratama, Adam Kharisma Jevi Shafira Sepyanto Krisdianto Sitanggang, Sari Levi Sabili, Naufal Lio Wilianto Mazid Hidayat Melina Melina Miftahul Falah Muhamad Ramdan, Muhamad Muhammad Ramdhani, Muhammad Nelsih Putriani Novi Hermansyah Nugroho, Akbar Satrio Nurul Sabrina, Puspita Nusantara, Madya Dharma Oktariansyah, Indro Abri Permana, Acep Handika Pujo Sulardi Puspita Nurul Sabrina Puspita Nurul Sabrina Puspita Nurul Sabrina, Puspita Nurul Putra, Dion Revaldy Putri, Ika Rahmah Rachadian Novansyah Rahandanu Rachmat Reno Setiawan Rezki Yuniarti Ridwan Ilyas Salsabila Fajriati Romli Salsabila Salsabila, Salsabila Fajriati Romli Sapari, Albi Mulyadi Sepyanto, Kharisma Jevi Shafira SETIAWAN, YOSEP Shisi Prayesti Sigit Pratama Siti Aisah Sulardi, Pujo Susanti, Adisti Dwi Susilowati, Merliana Tri Syarifudin Yoga Pinasty Syarifudin Yoga Pinasty Tacbir Hendro Tacbir Hendro Pudjiantoro Tacbir Hendro Pudjiantoro Tacbir Hendro Pudjiantoro Tacbir Hendro Pudjiantoro Tacbir Hendro Pudjiantoro Tiara Rahmawati Tri Wijaya Permana Sidik Wibowo, Ditto Ridhwan Wilianto, Lio Wina Witanti Wina Witanti Yanuar, Muhammad Rizki Yazid, Rija Muhamad Yoga, Yoga Yulison Herry Chrisnanto