Setya, S.C., Perangin-angin, M.I., Marsono, M., Nasyuha, A.H. and Harnaningrum, L.N. 2025. Optimizing Insurance Customer Segmentation with C4.5 Decision Tree Algorithm. Journal of Information System Research (JOSH). 6, 4 (Jul. 2025), 1938-1947. DOI:https://doi.org/10.47065/josh.v6i4.7358.