Enhanced Sentiment Analysis on Online Amazon Reviews Using RoBERTa with PSO-Based Hyperparameter Tuning. Journal of Global Research in Electronics and Communications(JGREC), [S. l.], v. 2, n. 1, p. 54–61, 2026. DOI: 10.5281/. Disponível em: https://jgrec.info/index.php/jgrec/article/view/104. Acesso em: 26 jan. 2026.