Safrizal AN, Surya Agustian. Classification of Covid-19 Vaccine Sentiment Using K-Nearest Neighbor and Fasttext on Twitter. EKSAKTA [Internet]. 2024Sep.30 [cited 2025May19];25(03):362-71. Available from: https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/384