XIA, Zilong; NIU, Fanchao. Deep Learning-Based Sentiment Analysis of COVID-19 Pfizer Vaccine Tweets Using Transformer and Bi-LSTM Architectures. Informatica, [S. l.], v. 49, n. 30, 2025. DOI: 10.31449/inf.v49i30.8479. Disponível em: https://www.informatica.si/index.php/informatica/article/view/8479. Acesso em: 14 jan. 2026.