Siagian, S.B. , Samsudin, S. and Irawan, M.D. 2022. Implementation of Gain Ratio on KNN Method in Predicting Sales of Electronic Sparepart at Panasonic Service Center Lhokseumawe. Jurnal Teknik Informatika C.I.T Medicom. 14, 1 (Mar. 2022), 36–47. DOI:https://doi.org/10.35335/cit.Vol14.2022.242.pp36-47.