CHAN, Fajri Rinaldi; FIRDAUS ANNAS; YULIFDA ELIN YUSPITA; GUSNITA DARMAWATI. Implementation of Convolutional Neural Networks (CNN) in An Emotion Detection System for Measuring Learning Concentration Levels. Knowbase : International Journal of Knowledge in Database, [S. l.], v. 4, n. 1, p. 49–61, 2024. DOI: 10.30983/knowbase.v4i1.8429. Disponível em: https://ejournal.uinbukittinggi.ac.id/index.php/ijokid/article/view/8429. Acesso em: 17 mar. 2026.