Validation-Based Hyperparameter Optimization of a Hybrid IndoBERT-BiGRU Model for Indonesian Sentiment Analysis. Jurnal Teknoif Teknik Informatika Institut Teknologi Padang, [S. l.], v. 14, n. 2, p. 139–148, 2026. DOI: 10.21063/jtif.2026.V14.2.969. Disponível em: https://teknoif.itp.ac.id/index.php/teknoif/article/view/969. Acesso em: 30 oct. 2026.