Chan FR, Firdaus Annas, Yulifda Elin Yuspita, Gusnita Darmawati. Implementation of Convolutional Neural Networks (CNN) in An Emotion Detection System for Measuring Learning Concentration Levels. Knowbase: Int. J. Knowl. Database [Internet]. 2024 Aug. 30 [cited 2026 May 20];4(1):49-61. Available from: https://ejournal.uinbukittinggi.ac.id/ijokid/article/view/8429