Analysis Of The Use Of Nazief-Adriani Stemming And Porter Stemming In Covid-19 Twitter Sentiment Analysis With Term Frequency-Inverse Document Frequency Weighting Based On K-Nearest Neighbor Algorithm. Recursive Journal of Informatics, [S. l.], v. 2, n. 2, p. 80–87, 2024. DOI: 10.15294/fqc79v89. Disponível em: https://journal.unnes.ac.id/journals/rji/article/view/34868. Acesso em: 5 dec. 2025.