Prastyo, Pulung Hendro, Amin Siddiq Sumi, Ade Widyatama Dian, and Adhistya Erna Permanasari. 2020. “Tweets Responding to the Indonesian Government’s Handling of COVID-19: Sentiment Analysis Using SVM With Normalized Poly Kernel”. Journal of Information Systems Engineering and Business Intelligence 6 (2):112-22. https://doi.org/10.20473/jisebi.6.2.112-122.