Susilowati, T., Sugiarto, D. and Mardianto, I. 2020. Validity Test of Self-Organizing Map (SOM) and K-Means Algorithm for Employee Grouping. Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi). 4, 6 (Dec. 2020), 1171 -. DOI:https://doi.org/10.29207/resti.v4i6.2492.