Vol. 13 No. 1 June 2022 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X Editor in Chief Evaristus Didik Madyatmadja Bina Nusantara University, Indonesia Managing Editors Nurlina Bina Nusantara University, Indonesia Christian Harito Bina Nusantara University, Indonesia International Editor Board Aminul Islam Technical University of Denmark (DTU), Denmark Bernardo Nugroho Yahya Hankuk University of Foreign Studies, South Korea Mahardhika Pratama Nanyang Technological University, Singapore Irwanda Laory University of Warwick, U.K Muhammad Syafrudin Sejong University, South Korea Natanael Karjanto Sungkyunkwan University, South Korea Nico Surantha Tokyo City University, Japan Wahyu Caesarendra Universiti Brunei Darussalam, Brunei Darussalam Yogi Ahmad Erlangga Zayed University, United Arab Emirates Leon A. Abdillah Bina Darma University, Indonesia Fergyanto E. Gunawan Bina Nusantara University, Indonesia Rinda Hedwig Bina Nusantara University, Indonesia Language and Layout Editor Eka Yanti Pangputri Bina Nusantara University, Indonesia Dina Nurfitria Bina Nusantara University, Indonesia Shavira Sarashita Bina Nusantara University, Indonesia Holil Bina Nusantara University, Indonesia Atmawati Bina Nusantara University, Indonesia Secretariat Dewi Novianti Bina Nusantara University, Indonesia Description ComTech is a biannual journal, published in June and December. ComTech is an interdisciplinary and open access journal covering Computer, Mathematics, and Engineering Applications. ComTech has been accredited by DIKTI under the decree number 3/E/KPT/2019 (SINTA 2) and indexed by CrossRef, ASEAN Citation Index, Directory of Open Access Journals (DOAJ), Science and Technology Index 2 (SINTA2), Garda Rujukan Digital (Garuda), Microsoft Academic Search, Google Scholar, Academic Resource Index (ResearchBib) and Indonesian Research Repository (Neliti). Research and Technology Transfer Office, Bina Nusantara University, Anggrek Campus, Jl.Kebon Jeruk Raya 27, Kebon Jeruk, Jakarta Barat 11530, Tel. +621-5350660 ext. 1705/1708, Fax.+621-5300244, E-mail: comtech@binus.edu, Website: https://journal.binus.ac.id/index.php/comtech, FB: https:// www.facebook.com/ComTechBinus Vol. 13 No. 1 June 2022 TABLE OF CONTENTS Noviyanti T. M. Sagala and Alexander Agung Santoso Gunawan Discovering the Optimal Number of Crime Cluster Using Elbow, Silhouette, Gap Statistics, and NbClust Methods....................... ....................................................................................................... 1−10 Fristi Riandari and Sarjon Defit The Application of C4.5 Algorithm for Selecting Scholarship Recipients............ ........................................ 11−21 Totok Sulistyo, Karmila Achmad, and Ida Bagus Irawan Purnama The Asset Management and Tracking System for Technical and Vocational Education and Training (TVET) Institution Based on Ubiquitous Computing....................... .............................................................. 23−34 Wahyu Budianto and Wahyu Sardjono The Implementation of Knowledge Management System (KMS) Evaluation Model in Improving Employee Performance: A Case Study of the State Electricity Company....................... ......................................... 35−43 Nur Rokhman, Erwin Eko Wahyudi, and Janoe Hendarto The Solution of Non-Linear Equations System Containing Interpolation Functions by Relaxing the Newton Method....................... ......................................................................................................... 45−52 Intan Nirmala, Hari Wijayanto, and Khairil Anwar Notodiputro Prediction of Undergraduate Student’s Study Completion Status Using MissForest Imputation in Random Forest and XGBoost Models................... ....................................................................... 53−62 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X