Aprinaldi, Faculty of Computer Science, Universitas Indonesia - Depok, Indonesia; Jati, G., Faculty of Computer Science, Universitas Indonesia - Depok, Indonesia; Gunawan, A.A.S., Faculty of Computer Science, Universitas Indonesia - Depok, Indonesia, Mathematics Department, School of Computer Science, Binus Nusantara University, Indonesia; Bowolaksono, A., Faculty of Mathematics and Natural Science Universitas Indonesia, Indonesia; Lestari, S.W., Faculty of Medicine, Universitas Indonesia, Indonesia; Jatmiko, W., Faculty of Computer Science, Universitas Indonesia - Depok, Indonesia