Mahendra, Muhammad Hafizh, Danang Triantoro Murdiansyah, and Kemas Muslim Lhaksmana. “Analisis Sentimen Tweet COVID-19 Menggunakan K-Nearest Neighbors Dengan TF-IDF Dan Ekstraksi Fitur CountVectorizer”. Dike 1, no. 2 (August 31, 2023): 37–43. Accessed July 31, 2025. https://ejournal.cvrobema.com/index.php/dike/article/view/35.