Sitanggang, M., E. Simamora, and F. D. Mobo. “Increasing Accuracy of Classification in C4.5 Algorithm by Applying Principle Component Analysis for Diabetes Diagnosis”. Numerical: Jurnal Matematika Dan Pendidikan Matematika, vol. 6, no. 2, Nov. 2022, pp. 175-86, doi:10.25217/numerical.v6i2.2610.