Setyawati, Erina, Berlilana, and Dhanar Intan Surya Saputra. 2026. “Rule-Based Aspect Extraction and IndoBERT-Based Sentiment Classification of Ruparupa Mobile Application Reviews”. Journal of Information Systems and Informatics 8 (4): 5093-5111. https://doi.org/10.63158/journalisi.v8i4.1816.