PRASETYANINGRUM PT, Norshahila Ibrahim, Ozzi Suria. Optimizing Sentiment Analysis of Hotel Reviews Using PCA and Machine Learning for Tourism Business Decision Support. Indonesian J. of Inf. Syst. [Internet]. 2025 Aug. 23 [cited 2025 Oct. 4];8(1):36-49. Available from: https://ojs.uajy.ac.id/index.php/IJIS/article/view/10978