Evaluasi Layanan Sistem Informasi Peringatan Bencana Info BMKG Menggunakan Aspect-Based Sentiment Analysis dengan Pendekatan Latent Dirichlet Allocation (LDA)
Salwa Maharani, Prof. Ir. Lukito Edi Nugroho, M.Sc., Ph.D. ; Ir. Adhistya Erna Permanasari, S.T., M.T., Ph.D.,IPM
2025 | Skripsi | TEKNOLOGI INFORMASI
Info BMKG application is a public digital service used by the Indonesian population to access weather forecasts, earthquake alerts, and early warnings. This study aims to evaluate the quality of the Info BMKG application based on user reviews using an Aspect-Based Sentiment Analysis (ABSA) approach that combines Latent Dirichlet Allocation (LDA) topic modeling and sentiment classification using Support Vector Machine (SVM). User review data were collected from the Google Play Store and App Store between January 2020 and March 2025. Preprocessing was conducted in two stages, including text normalization, tokenization, POS-tagging, stopword removal, and stemming.
The LDA model produced seven topics, with the highest coherence score of 0.4653. These topics were mapped to four evaluation aspects based on the DeLone and McLean Information System Success Model: Information Quality, System Quality, Service Quality, and User Satisfaction. The sentiment labeling results show that positive reviews dominate (3451 entries), followed by negative (2088), and neutral (1152).
The SVM-based multi-label classification model achieved high performance, with an F1-score of 0.88 for aspect classification and 0.90 for sentiment classification positive and negative. However, classification performance declined when the neutral class was included, indicating the challenge of detecting emotionally ambiguous expressions. Negative sentiment analysis revealed major complaints related to delayed earthquake notifications and inaccurate weather forecasts. Neutral reviews often contained suggestions such as the addition of widgets and improvements to system notifications. Positive reviews highlighted user satisfaction and appreciation for the application's speed and accuracy in delivering crucial information. This study provides practical insights for improving the Info BMKG application and enhancing user trust and satisfaction through targeted feature improvements.
Kata Kunci : Analisis Sentimen Berbasis Aspek, Info BMKG, Latent Dirichlet Allocation, Analisis Sentimen, Support Vector Machines