Sika, X. ., Kisbianty, D. ., Istoningtyas, M. ., Abidin, D. Z. . and Toscany, A. N. . (2026) “Optimized RoBERTa–DeBERTa Ensemble for Multi-Class Sentiment Analysis on Highly Imbalanced Data ”, Jurnal Teknik Informatika (Jutif). Purwokerto, 7(2), pp. 1964–1980. doi: 10.52436/1.jutif.2026.7.2.5350.