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Erwin Daniel Sitanggang
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LOFIAN: Jurnal Teknologi Informasi dan Komunikasi
Published by Universitas Mandiri Bina Prestasi
ISSN : 27989836     EISSN : 27989593     DOI : https://doi.org/10.58918/lofian.v2i2
Core Subject : Science,
Computer Science & IT
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi, merupakan jurnal ilmiah yang berfokus pada bidang Teknologi Informasi dan Komunikasi (TIK) bertaraf nasional yang diterbitkan oleh Program Studi Teknik Informatika Universitas Mandiri Bina Prestasi (UMBP) dengan e-ISSN: 2798-9593 dan p-ISSN: 2798-9836. Diterbitkan secara berkala enam bulan sekali yaitu September dan Maret dengan tujuan untuk menyebarluaskan pemikiran konseptual atau ide-ide berupa temuan, inovasi dan penerapan teknologi ilmiah yang telah dicapai di bidang penelitian.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 67 Documents
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Evaluasi Performa Metode Rough Set dan Algoritma Apriori dalam Mengidentifikasi Pola Penyakit Demam Tifoid Sitanggang, Erwin Daniel; Irawan, Beny
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 1 (2025): Agustus
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/cmws6d52

Abstract

Informasi merupakan kebutuhan vital dalam kehidupan sehari-hari dan memiliki peranan penting dalam proses pengambilan keputusan. Namun, memperoleh informasi yang tepat dan akurat sering kali menjadi tantangan tersendiri. Penelitian ini bertujuan untuk membantu pengambil keputusan dengan membandingkan kinerja metode Rough Set dan algoritma Apriori dalam proses analisis data. Metode Rough Set dimanfaatkan untuk menghasilkan aturan yang ringkas melalui proses reduksi, sedangkan algoritma Apriori digunakan untuk menemukan kombinasi itemset yang sering muncul dalam basis data berdasarkan nilai minimum support (minsup), dengan tahapan utama berupa proses join dan prune. Tujuan utama dari penelitian ini adalah meningkatkan akurasi kedua metode dalam mengidentifikasi penyakit demam tifoid. Penelitian ini menggunakan tujuh variabel input utama, dan berdasarkan pengujian terhadap dataset demam tifoid, metode Rough Set menghasilkan aturan dengan panjang empat, sedangkan algoritma Apriori menghasilkan aturan dengan panjang tiga. Hasil akhir menunjukkan bahwa kedua metode memberikan rata-rata akurasi sebesar 87,4%.
Studi Literatur Information Retrieval System Semantik Untuk Pencarian Produk E-Commerce Maulana Farras; Silvia Hanum; Roberto Kaban
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.291

Abstract

This research aims to analyze the development of the Semantic Information Retrieval System (Semantic IRS) approach in e-commerce product search based on descriptions through a literature study of 15 scientific articles consisting of national and international publications. The results of the analysis show that 33% of articles use the semantic IR and dense retrieval approaches as the basis for semantic mapping between queries and product documents. The late interaction and multimodal semantic retrieval approaches were each applied in 27% of articles, indicating an increasing research focus on token-level semantic interaction modeling and the integration of textual and visual information. Additionally, 13% of articles utilized query expansion and semantic relation modeling as supporting methods to improve search relevance. In terms of methodology, 80% of article used a quantitative experimental approach with information retrieval system metric-based evaluation, and 67% of articles adopted neural models. Overall, these quantitative findings indicate that neural model-based Semantic IR, late interaction, and multimodal approaches are the dominant and most relevant directions for handling long and unstructured description-based product searches in modern e-commerce systems.
Sistem Pendukung Keputusan Penentuan Penerima Bantuan Keuangan Korban Bencana Alam Menggunakan Metode AHP Sartana; Fauzi Haris Simbolon; Simbolon, Marice Hotnauli
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.296

Abstract

The AHP method is a way to break down complex multi-factor or multi-criteria problems into a hierarchy. The AHP method was first proposed by Thomas L. Saaty, a simple and efficient method for identifying solutions from a set of alternatives. In this study, all applicants for assistance obtained based on a predetermined quota are entitled to receive assistance with a size that matches the weight obtained from the AHP. The method used to solve this research problem uses the Analytical Hierarchy Process (AHP) method. The programming language used is Visual Basic, which is useful for processing data into information, and Cristal Report as a medium for reporting. This decision support system seeks priority recipients of financial assistance for victims of natural disasters. The application of the decision support system seeks solutions in determining the provision of financial assistance to victims of natural disasters with criteria for the category of casualties, damage categories, building types, and land status categories.
Penerapan Framework COBIT dalam Meningkatkan Keamanan Data pada Sistem Informasi Pegadaian Swasta PT Budi Gadai Indonesia Oktaviana Bangun; Fransisko; Dolly; Sarah; Reski; Dewi
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.292

Abstract

Safeguarding digital assets is a critical element in overseeing corporate information infrastructures, becoming vital within the financial services landscape, including private pawnshops. This research focuses on fortifying data protection at PT Budi Gadai Indonesia by adopting the performance-based COBIT 2019 system and evaluating its operational impact. Using a descriptive-qualitative methodology, the study examines security management practices and their integration with the DSS and EDM areas of the framework. Conducted as a longitudinal evaluation (2020–2025), the deployment followed a systematic multi-phase strategy. Empirical evidence indicates that integrating this governance model bolstered security through rigorous access monitoring, refined audit logs, and structured risk mitigation. Specifically, the activation of DSS05 and DSS06 protocols lowered breach vulnerabilities by 68% and ensured stricter regulatory adherence. Notably, the integrity maturity rating surged from 2.22 to 4.24, representing a 91% enhancement. These outcomes suggest that international security standards are instrumental in securing information systems within the private pawn brokerage sector.
Evaluasi Tata Kelola Sistem Informasi Manajemen Sekolah dan Data Peserta Didik Berdasarkan Framework COBIT 2019 di SMAN 1 Medan Oktaviana Bangun; Utari Adelia Citra; Chindy Olivia Melani; Putri Yolanda Purba; Ramadina Sofia Amadea
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.293

Abstract

The purpose of this study is to evaluate the School Management Information System and student data governance at Medan 1 Public High School (SMAN 1 Medan) using the COBIT 2019 framework. The evaluation was conducted across three key domains: grade and NISN (National Student Identity Number) data integrity (DSS06), e-learning availability (DSS05), and student data security. A quantitative approach was employed, with data collected through questionnaires, interviews, and direct observation of operational systems. The survey participants consisted of 45 individuals, including the principal, vice principal, teachers, IT staff, and system administrators. The analysis indicated that SMAN 1 Medan's IT governance maturity was at "Level 2 (Managed)" with an average score of 2.45 out of 5. The scores by domain were 2.38 for DSS06 (Business Process Control Management), 2.52 for DSS05 (Service Request and Incident Management), and 2.45 for the Data Security domain. Key findings from the study included the identification of several areas requiring improvement: (1) insufficient documentation for grade and NISN data management procedures, (2) e-learning infrastructure limitations that caused periodic downtime, and (3) suboptimal implementation of student data security policies. The study offers strategic recommendations for raising IT governance maturity to "Level 3 (Established)" through the implementation of standard operating procedures (SOPs), infrastructure improvements, and strengthening of information security policies.
Analisis Tata Kelola Keamanan Data dan Kontinuitas Layanan Berdasarkan Framework COBIT 2019 pada Platform E-Commerce Lokal (Studi Kasus: MedanMart) Oktaviana Bangun; Elysabeth Cry Aruan; Suci Aisa Sirait; Tiara Yedidha Keliat; Selvia englika br Sitepu; Peranika Br perangin angin
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.294

Abstract

Local e-commerce platforms and digital MSMEs in Indonesia currently encounter formidable obstacles regarding data security governance and maintaining service continuity. To address these issues, this research evaluates the management of data security and service stability at MedanMart, a prominent local e-commerce platform in Medan City, by utilizing the COBIT 2019 framework. The study specifically deep-dives into the DSS05 (Management of Security Services) and EDM03 (Ensuring Risk Optimization) domains to determine governance maturity, perform gap analysis, and formulate strategic improvements for digital business readiness. Employing an empirical, descriptive, and qualitative case study approach, data were gathered through field observations, policy document reviews, and semi-structured interviews with IT personnel, operations managers, and merchant representatives. The assessment results revealed a maturity score of 2.43 for DSS05 and 2.21 for EDM03, categorizing both at the "Managed" level. Critical gaps identified include the absence of a disaster recovery plan (DRP), inadequate risk management documentation, and a lack of continuous security monitoring. Although the platform maintained a 97.2% uptime during the study, the absence of a formal resilience strategy poses significant operational risks. Ultimately, while MedanMart possesses a functional security foundation, substantial reinforcement in risk monitoring and continuity planning is essential to satisfy COBIT 2019 standards and national personal data protection regulations.
Analisis Kematangan Tata Kelola Sistem Informasi Pelayanan Publik Berdasarkan Framework COBIT 2019 pada Dinas Kependudukan dan Pencatatan Sipil Kota Medan Oktaviana Bangun; Anggita Wulandary Lubis; Esta Uly Br Pasaribu; Yehezkiel Kristian Albonar Pardede; Emia Br Ginting; Bryan Agustinus Sihombing
LOFIAN: Jurnal Teknologi Informasi dan Komunikasi Vol 5 No 2 (2026): Pebruari
Publisher : Universitas Mandiri Bina Prestasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58918/lofian.v5i2.295

Abstract

This study uses the COBIT 2019 approach to assess the maturity of the public service information system (IS) governance at the Medan City Population and Civil Registration Agency (Disdukcapil). The assessment focuses on processes DSS01 (Service Request and Incident Management) and DSS06 (Business Process Governance) to ensure the quality of digitally-based public services. Analysis targets include e-government service quality, citizen data integrity, queue performance, and system downtime. The research methodology employs quantitative and qualitative case studies, including a capability maturity questionnaire (n=50), structured interviews (n=6), and aggregated data on operational incidents over a three-month period based on global benchmarking standards. The analysis results showed an average maturity score of 2.84 (Managed) for DSS01 and 2.57 (Managed) for DSS06, indicating that IT processes are implemented and documented, but lack standardization across the organization. The largest gaps were identified in service-level agreements (SLAs) and incident escalation criteria, as well as data integrity reconciliation mechanisms. Findings from operational data indicate that while technical controls for data integrity exist, the lack of formal audit trails and periodic system downtime significantly impact service reliability. Recent global trends in system outages highlight the importance of robust mitigation strategies to prevent service disruptions. The study presents strategic recommendations organized into a 12-month roadmap: (1) strengthening the service desk and formalizing SLAs; (2) implementing a data change audit trail; (3) developing automated validation and reconciliation procedures; and (4) improving capacity planning to mitigate downtime. These findings are crucial for aligning IT operations with national and global goals of providing fast, accurate, and transparent public services. 

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