Nurhopipah, A. and Larasati, N.A. 2021. CNN Hyperparameter Optimization using Random Grid Coarse-to-fine Search for Face Classification. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control. 6, 1 (Feb. 2021), 19-26. DOI:https://doi.org/10.22219/kinetik.v6i1.1185.