Nurdin, S., Novta Dany’el Irawan and Riski Nur Istiqomah Dinnullah (2022) “K – Nearest Neighbor dalam Klasifikasi Green Beans Kopi Robusta Berdasarkan Grade Coffee ”, RAINSTEK : Jurnal Terapan Sains & Teknologi, 4(4), pp. 256–263. doi: 10.21067/jtst.v4i4.8229.