Sari R, Hayuningtyas RY. Particle Swarm Optimization-based Support Vector Machine Method for Sentiment Analysis in OVO Digital Payment Applications. JTOS [Internet]. 2021Dec.20 [cited 2025Feb.7];4(2):232 -239. Available from: https://ejournal.uniks.ac.id/index.php/JTOS/article/view/1776