Novrianty A, Furqan M, Sriani S. Sentiment Analysis Related To Covid-19 Vaccination On Social Media Using The K-Nearest Neighbor (K-NN) Method. JTOS [Internet]. 2025May30 [cited 2025Jun.5];8(1):64 -75. Available from: http://ejournal.uniks.ac.id/index.php/JTOS/article/view/4156