PRASETYANINGRUM, PUTRI TAQWA, Norshahila Ibrahim, and Ozzi Suria. 2025. “Optimizing Sentiment Analysis of Hotel Reviews Using PCA and Machine Learning for Tourism Business Decision Support”. Indonesian Journal of Information Systems 8 (1):36-49. https://ojs.uajy.ac.id/index.php/IJIS/article/view/10978.