ZEN, B. P. .; SUSANTO, I. .; FINALIAMARTHA, D. . TF-IDF Method and Vector Space Model Regarding the Covid-19 Vaccine on Online News. Sinkron : jurnal dan penelitian teknik informatika, [S. l.], v. 5, n. 2B, p. 69-79, 2021. DOI: 10.33395/sinkron.v6i1.11179. Disponível em: https://jurnal.polgan.ac.id/index.php/sinkron/article/view/11179. Acesso em: 16 jul. 2024.