Supangat S, Saringat M, Rochman M. Predicting Handling Covid-19 Opinion using Naive Bayes and TF-IDF for Polarity Detection. MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer [Internet]. 31Mar.2023 [cited 3May2024];22(2):173-84. Available from: https://journal.universitasbumigora.ac.id/index.php/matrik/article/view/2227