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Random Forest Optimization Using Recursive Feature Elimination for Stunting Classification Marpaung, Sophya Hadini; Sinaga, Frans Mikael; Rambe, Khairul Hawani; Simamora, Fandi Presly; Kelvin, Kelvin
Indonesian Journal of Artificial Intelligence and Data Mining Vol 8, No 1 (2025): March 2025
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/ijaidm.v8i1.35295

Abstract

Stunting is still a major health problem in Indonesia, with a prevalence of 27% in toddlers in 2023, far from the WHO target of below 20%. RSU Mitra Medika Tanjung Mulia in Medan serves patients with various socio-economic backgrounds, which affects the quality of services, including stunting detection. Conventional methods are prone to bias and error. This study used the Random Forest algorithm and the Recursive Feature Elimination (RFE) feature selection method to improve the accuracy of stunting classification. After data preprocessing and feature selection, two main variables were identified, namely age and height. The initial Random Forest model achieved an accuracy of 94.38%, which increased to 94.42% after hyperparameter tuning. The results showed that this approach produced an accurate, efficient model that can be integrated into clinical systems, helping medical personnel identify children at risk of stunting quickly and accurately, increasing the effectiveness of interventions, and supporting government efforts to reduce the prevalence of stunting
Pemasangan jaringan komputer untuk peningkatan pembelajaran pada Yayasan Perguruan Letjen Haryono MT Caroline, Caroline; Halim, Apriyanto; Rambe, Khairul Hawani
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 5 (2025): September (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i5.33603

Abstract

Abstrak Yayasan Perguruan Letjen Haryono MT. merupakan institusi sekolah swasta yang bergerak di bidang pendidikan mulai dari tingkat TK sampai SMA. Kendala yang dihadapi oleh mitra adalah jaringan komputer yang sering mengalami gangguan dengan rata-rata 2–3 kali setiap minggu dan durasi downtime sekitar 5–10 menit per kejadian. Gangguan ini berdampak pada proses belajar mengajar di laboratorium lama yang hanya memiliki 20 unit komputer aktif. Kondisi tersebut mengakibatkan keterlambatan praktik, berkurangnya efektivitas pembelajaran, dan ketidaknyamanan siswa. Tujuan dari kegiatan ini adalah untuk menciptakan laboratorium komputer yang baru dengan pemasangan jaringan yang baik sehingga dapat mendukung operasional sekolah. Adapun metode yang digunakan dalam kegiatan ini meliputi pengumpulan kebutuhan mitra, pembangunan sketsa pemasangan jaringan, menyiapkan alat dan bahan yang diperlukan, memasang kabel UTP ke konektor RJ45, konfigurasi jaringan LAN, pengujian jaringan LAN, implementasi sesuai sketsa, dan pemeliharaan. Hasil dari pengabdian ini sesuai dengan tujuan kegiatan yaitu terbentuknya laboratorium komputer baru dengan instalasi ulang jaringan yang menerapkan topologi bintang. Penggunaan laboratorium tidak terlepas dari pengguna yang mengoperasikannya. Oleh sebab itu, disarankan agar perangkat komputer dan kabel yang ada dijaga dan dirawat dengan baik. Kata kunci: jaringan; local area network; pengabdian; topologi bintang. Abstract Yayasan Perguruan Letjen Haryono MT. is a private educational institution that provides learning services from kindergarten to senior high school levels. The main problem faced by the partner is the instability of the computer network, which experiences an average of 2–3 disruptions per week with a downtime duration of approximately 5–10 minutes per incident. This disruptions significantly hampers the teaching and learning process in the old computer laboratory, which was limited to 20 active computer units. This condition causes delays in practical sessions, reduced learning effectiveness, and student inconvenience. The purpose of this community service activity is to establish a new computer laboratory with a properly installed network to support the school’s operational activities. The methods implemented in this activity include collecting partner requirements, designing a network installation sketch, preparing the necessary tools and materials, crimping UTP cables to RJ45 connectors, configuring the LAN, testing the LAN, implementing the network design, and conducting maintenance. The results of this activity successfully achieved the objectives, namely the development of a new computer laboratory with a reinstalled network using a star topology. Since the laboratory usage depends on users, it is recommended that computers and cables be properly maintained to ensure long-term functionality. Keywords: network; local area network; service; star topology.