Muhammad Shollahuddin Hamidulloh, Sharifah Saon, and Abd Kadir Mahamad. 2022. “Classification Algorithm for the Sentiment Analysis of the Covid 19 Pandemic in Indonesia Context”. Evolution of Information, Communication and Computing System 3 (1): 66-79. https://publisher.uthm.edu.my/bookseries/index.php/eiccs/article/view/35.