Sihombing, S., Rahmat W. Sembiring and Eka Irawan (2022) “Application of the K-Means Clustering Algorithm in Grouping Regencies/Cities in North Sumatra Province Based on Human Development Index Indicators”, Jurnal Mandiri IT, 11(1), pp. 20–25. doi: 10.35335/mandiri.v11i1.124.