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All Journal Coding: Jurnal Komputer dan Aplikasi Jurnal Teknologi Informasi dan Ilmu Komputer Jurnal Edukasi dan Penelitian Informatika (JEPIN) JOIV : International Journal on Informatics Visualization JURNAL MEDIA INFORMATIKA BUDIDARMA MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat G-Tech : Jurnal Teknologi Terapan Jurnal Teknik Informatika (JUTIF) Jurnal Computer Science and Information Technology (CoSciTech) JUSTIN (Jurnal Sistem dan Teknologi Informasi) Tanjungpura International Journal on Dynamics Economics, Social Sciences, and Agribusiness (TIJDESSA) Kohesi: Jurnal Sains dan Teknologi Jurnal Multidisiplin Indonesia Mekongga: Jurnal Pengabdian Masyarakat Jurnal Aplikasi dan Riset Informatika
Hafiz Muhardi
Universitas Tanjungpura, Pontianak, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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Journal : Jurnal Teknik Informatika (JUTIF)

 1 
Improving Imbalanced Data Classification Using Stacked Ensemble Learning with Naïve Bayes Variants and Random Forest Sastypratiwi, Helen; Yulianti, Yulianti; Muhardi, Hafiz
Jurnal Teknik Informatika (Jutif) Vol. 7 No. 2 (2026): JUTIF Volume 7, Number 2, April 2026
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2026.7.2.5308

Abstract

Classification in imbalanced and heterogeneous datasets poses significant challenges in informatics, particularly in agricultural domains where minority classes are often underrepresented and feature redundancy affects model performance. This research aims to improve classification performance by developing a stacked ensemble learning framework that integrates probabilistic and tree-based learners to address class imbalance and enhance model interpretability. The framework combines Gaussian Naïve Bayes (GNB), Multinomial Naïve Bayes (MNB), and Random Forest (RF) as base learners with Logistic Regression as the meta-learner. Feature selection was performed using Chi-Square and ReliefF to identify the most relevant predictors, while SMOTE was applied to balance the dataset. Two ensemble configurations were evaluated: Ensemble A (GNB + MNB) and Ensemble B (GNB + RF). Experimental results demonstrate that Ensemble B achieved 97% accuracy and a macro F1-score of 0.97, with a 5.7% accuracy improvement over the best individual classifier and an 18% improvement in minority-class recall. The integration of probabilistic and tree-based models within a stacked architecture provides an interpretable and effective solution for data-driven decision systems in informatics, particularly valuable for domains requiring both high accuracy and model explainability in handling imbalanced datasets.
Co-Authors A. Yani, Dhita Deviacita Al-Abdaliah, Ulfat Anggi Srimurdianti Sukamto Anggi Srimurdianti Sukamto, Anggi Srimurdianti Argo, Hubertus Cahyo Arif Bijaksana Putra Negara Arif Bijaksana Putra Negara Azmi, Amirull Chandra, Eggi Cucu Suhery Desepta Isna Ulumi Desepta Isna Ulumi Dharmawan, Eric Dolly Virgian Shaka Yudha Sakti Dwi Marisa Midyanti Dwi Nyoto, Rudi Elang Derdian Marindani Esra Martogi Aprianto Silitonga Eva Faja Ripanti Fajrie Dwi Oktofri Felik, Felik Galih Rizky Fahrezi Gatoto Widodo Guntur, Arifin Sidiq Tunggal Helen Sasty Pratiwi, Helen Sasty Helen Sastypratiwi Helen Sastypratiwi Helen Sastypratiwi Helen Sastypratiwi, Helen Heri Priyanto, Heri Herry Sujaini Herry Sujaini Herry Sujaini Hersyaputra, Mohamad Syazimmi Hirzen Hasfani Ihsan Maulana Ikhwan Ruslianto Irma Nirmala Islami, Habi Istiyan, Nur Jefri Hasiholan Simanjuntak Kartika Sari Kasliono Kasliono Mandau, M Yunus Marisa Midyanti, Dwi Maulidya, Nurul Fatimah Mauludin, Rizqi Mega Noveanto Mega Noveanto Muhammad Azhar Irwansyah Muhammad Raehan Maulana Muhammad Reza Saputra Muniyati, Evi Fathiyah Nadinda, Dara Nindi, Pipin Puspa Novi Safriadi Novi Safriadi Nyoto, Rudi Dwi Pascal Tangkitn Carandas Pratama, Farhan Putra, Rasmi Gumilang Putri, Indira Melinda Rahmi Hidayati Ramadhani Edo Saputra Risqi, Yahya Rita Wahyuni Rudy Dwi Nyoto Rudy Dwi Nyoto, Rudy Dwi Sajid, Fahmi Sari, Dian Aulia Setiawan, Nurul Ivan Sherren Jessica Angelina Sholva, Yus Ss, Renny Wulandari Ss, Renny Wulandari Suhardi Suhardi Syamsul Bahri Syamsul Bahri Tedy Rismawan Tursina Tursina Tursina Uray Ristian Wahyuni, Mirda Wenewasti, Ignatia Tri Yulianti Yulianti Yulianti Yulianti Yulianti Yulianti Yurida, Nur Harsi Yurida, Nur Harsi