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Journal : Journal of Technology and Computer (JOTECHCOM)

Comparative Machine Learning Analysis for Sentiment Classification of Sumatra Disaster 2025 Alfarizi, Nauval; Lydia, Prima; Novelan, Muhammad Syahputra; Putra, Adi; Sinurat, Satria
Journal of Technology and Computer Vol. 3 No. 1 (2026): February 2026 - Journal of Technology and Computer
Publisher : PT. Technology Laboratories Indonesia (TechnoLabs)

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Abstract

Indonesia is highly vulnerable to natural disasters due to its geological position, resulting in extensive disaster-related news coverage that shapes public sentiment. This study presents a comparative machine learning analysis for sentiment classification of online news related to natural disasters in Sumatra during December 2025. The dataset was collected through web scraping from two major Indonesian news portals, like CNN Indonesia and Detik, and categorized into three sentiment classes: negative, neutral, and positive. Sentiment classification was conducted using Naive Bayes, Support Vector Machine (SVM), and k-Nearest Neighbors (KNN) algorithms. The results demonstrate that Naive Bayes achieved accuracy values of 0.57 on the CNN Indonesia dataset and 0.61 on the Detik dataset. However, its performance was highly biased toward the dominant negative class, as indicated by low macro-average F1-scores of (0.24) and (0.39). In contrast, SVM showed the most balanced performance by reducing class bias, achieving accuracies of (0.68) and (0.67) with macro-average F1-scores of (0.51) and (0.59), respectively. KNN demonstrated moderate performance, with accuracy values of 0.60 and 0.59, but remained less effective than SVM in handling minority sentiment classes.
Co-Authors Abd Haris, Abd Abdi, Hamdani Afifah Aulia Fitri Alfarizi, Nauval Amelia Amri, Mira Amri , Mira Amelia Annisa Dwi Nugraheni Ardian, Heri Arief Fath Atiya Arif, Maulana Arita Marini Arya Bintang Prasetyo Astriani, Dea dadang, rahmatul Damayanti Firdaus, Efrida Deka Veronica Desy Safitri Dewanti, Andini Dewi ANGGRAENI Diah Ayu Ramadhina Dicky Febri Hadi Dudung Amir Sholeh Efendi, Roni Fadilla Zahrah Fauziah, Naila Hairunnisa, Salsa Nurul Harti, Sri Dwi Hasan Basri Irwansyah Irwansyah Islam Madina Januar, Ahmad Juliwis Kardi Keluanan, Yane Henderina Linda Zakiah Lydia, Prima Maulidya, Aisyah Mira Amalia Amri Mira Amelia Amri, Mira Amelia Muhammad Amin Muhammad Syahputra Novelan Nadia Okzella Namang, Kezya Thresia Nauval Alfarizi Nikita Aura Marshanda Nome, Nehemia Noprijon Nurdin Nurdin Nurzengky Ibrahim Pangestu, Yoga Paulus Suhendro Mbette , Petrus Petrus Suhendro Prima Lydia Yosophin Batubara Purwanto, Vivi Devriana Putra, Pristian Hadi Putri Sugiharto, Anggie Putri, Kansa Aura Rahayu Ningsih, Sri Rahmawati, Sisca Raihan, Regghina Nasywa Ramadani , Laili Resty Kasmitha Rina Wulandari Rizky Hidayat Rumawak, Sarah Agustina Sahari, Gunar Sahputra, Rilawadi Salim, Salsabila Nuramalia Sari Dewi, Lizabeth Satria Sinurat Selan, Yunus Shoalihin Shoalihin Silalahi, Dian Hardian Sinurat, Satria Soleh, Dudung Amir Sri Nuraini Suhendro, Petrus Suhendro, Petrus Paulus Mbette Suherman, Suherman Sujarwo Sunandar Sunandar Taufik Hidayat Usman, Herlina Uswatun Hasanah Utami, Adinda Desty Dian Yolanda Sari Yudi Darmawan Yuliati, Siti Rohmi Yunicha Harly, Aulia Zebua, Marta Novianti Zulhendra, Riko Zuliah, Azmiati