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All Journal JURNAL SISTEM INFORMASI BISNIS Jurnal Hubungan Internasional Jurnal Informatika dan Teknik Elektro Terapan JUSIFO : Jurnal Sistem Informasi INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi JURNAL ILMIAH INFORMATIKA JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI INTECOMS: Journal of Information Technology and Computer Science JURNAL TEKNOLOGI DAN OPEN SOURCE Simtek : Jurnal Sistem Informasi dan Teknik Komputer Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Jurnal Teknologi Informasi dan Multimedia Journal of Information Systems and Informatics bit-Tech JATI (Jurnal Mahasiswa Teknik Informatika) Nusantara Science and Technology Proceedings Jurnal FASILKOM (teknologi inFormASi dan ILmu KOMputer) Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat Jurnal Pendidikan dan Teknologi Indonesia International Journal of Engineering, Science and Information Technology Jurnal Mahasiswa Sistem Informasi (JMSI) KLIK: Kajian Ilmiah Informatika dan Komputer International Journal of Data Science, Engineering, and Analytics (IJDASEA) JITSI : Jurnal Ilmiah Teknologi Sistem Informasi COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat Jurnal Informatika Teknologi dan Sains (Jinteks) Jurnal Ilmiah Sistem Informasi dan Ilmu Komputer JUSIFOR : Jurnal Sistem Informasi dan Informatika Biner : Jurnal Ilmiah Informatika dan Komputer Journal of Artificial Intelligence and Digital Business MDP Student Conference ILTEK : Jurnal Teknologi Scientica: Jurnal Ilmiah Sains dan Teknologi Information Technology International Journal (ITIJ) Jurnal Ilmiah Betrik : Besemah Teknologi Informasi dan Komputer Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Router : Jurnal Teknik Informatika dan Terapan Repeater: Publikasi Teknik Informatika dan Jaringan Neptunus: Jurnal Ilmu Komputer dan Teknologi Informasi Router : Jurnal Teknik Informatika dan Terapan
Abdul Rezha Efrat Najaf
Department Of Information System Department, Faculty Of Computer Science, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Transportation Other

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Rancang Bangun Sistem Rekomendasi Produk Skincare Menggunakan Metode Hybrid Collaborative Filtering Berbasis Android Manti, Rival Septian Jeflin; Najaf, Abdul Rezha Efrat; Permatasari, Reisa
COMSERVA : Jurnal Penelitian dan Pengabdian Masyarakat Vol. 5 No. 1 (2025): COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/comserva.v5i1.3122

Abstract

Industri skincare mengalami pertumbuhan signifikan seiring meningkatnya kesadaran masyarakat terhadap kesehatan kulit. Namun, isu over-claim produk dan kurangnya transparansi informasi menimbulkan keraguan konsumen dalam memilih produk yang tepat. Penelitian ini bertujuan untuk merancang sistem rekomendasi produk skincare berbasis Android dengan menerapkan metode Hybrid Collaborative Filtering yang menggabungkan Content-Based Filtering dan Item-Based Collaborative Filtering melalui pendekatan switching. Sistem dikembangkan menggunakan bahasa pemrograman Kotlin, Jetpack Compose, dan Firebase sebagai backend. Proses pengembangan mengikuti metodologi SCRUM dan melibatkan 100 produk skincare dengan data rating serta atribut pengguna yang dikumpulkan melalui scraping dan kuisioner. Pengujian dilakukan dengan evaluasi Mean Absolute Error (MAE) dan Precision, serta Blackbox Testing untuk pengujian fungsional. Hasil menunjukkan metode hybrid ini mampu menghasilkan rekomendasi yang relevan, mengatasi masalah cold-start bagi pengguna baru, dan meningkatkan akurasi rekomendasi seiring bertambahnya data pengguna. Sistem ini mencatat nilai precision sebesar 0,80 untuk metode content-based dan 0,88 untuk collaborative filtering, serta penurunan MAE dari 0,624 menjadi 0,532 dengan peningkatan jumlah user. Temuan ini memperlihatkan bahwa integrasi metode switching hybrid dalam aplikasi mobile dapat menjadi solusi efektif dalam memberikan rekomendasi personal di tengah tantangan pasar skincare digital yang dinamis.
Rancang Bangun Sistem Informasi Akademik Pada Sekolah Perhotelan Hols Berbasis Website Arief Yahya Prasetio; Eka Dyar Wahyuni; Abdul Rezha Efrat Najaf
Router : Jurnal Teknik Informatika dan Terapan Vol. 2 No. 3 (2024): September : Router : Jurnal Teknik Informatika dan Terapan
Publisher : Asosiasi Profesi Telekomunikasi dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/router.v2i3.147

Abstract

Faculty The Faculty of HOLS Hospitality School faces challenges in manual administration, such as accumulating registration data, difficulty in data retrieval, risk of data loss, administrative inaccuracies, and time-consuming registration and attendance processes, increasing the risk of administrative errors. To address these issues, researchers designed a web-based information system using the waterfall model and PHP programming language. This system allows students to mark attendance using a QR code within a 5-meter radius, mentors to reschedule classes quickly and easily, and administrators to control administrative data accurately and efficiently. The result of this research is an information system product that facilitates academic administration management at HOLS Hospitality School, supports e-learning facilities, and simplifies coordination between students, mentors, and administrators.
Penerapan User Centered Design untuk Optimisasi User Experience Aplikasi Virtusee Nabila Octavianti; Rizka Hadiwiyanti; Abdul Rezha Efrat Najaf
Jurnal Teknologi Informasi dan Multimedia Vol. 7 No. 1 (2025): February
Publisher : Sekawan Institut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/jtim.v7i1.627

Abstract

This study aims to redesign Virtusee, an employee performance monitoring platform, using the User-Centered Design (UCD) methodology. Virtusee features functionalities such as leave requests, monthly performance tracking, and self-service payslip access. The application, last updated in 2014, was described by users as outdated and not aligned with current trends. Based on the System Usability Scale (SUS) questionnaire, the application scored 40, categorized as poor with a grade of F, indicating the need for significant improvements. Employing the UCD approach, this study prioritized user needs and preferences in the redesign process, following these stages: (1) defining the usage context, (2) identifying user and organizational requirements, (3) design and implementation, and (4) usability evaluation. Testing the new design involved users who had used Virtusee more than once in the past month. The testing scenarios included exploring the new design, completing SUS and QUIS (Questionnaire for User Interaction Satisfaction) surveys via Google Forms, and conducting brief interviews to gather suggestions and critiques. Data were collected through observation, interviews, literature review, and questionnaire dissemination. Results showed a significant improvement, with the SUS score increasing to 80.3, indicating acceptable usability. The QUIS evaluation revealed average scores ranging from 5.9 to 6.8 across various indicators, exceeding the expected median. These findings highlight that the UCD methodology is effective in designing applications that are more user-centered, enhancing productivity and user satisfaction. This study provides valuable insights for developers aiming to create applications that are not only functional but also adaptive to evolving user needs, serving as a reference for designing solutions that align with user-centric principles.
Testing of Thesis Management Application Using STLC Framework and Automation Tools in Physics Study Program UPN “Veteran” Jatim Dewangga Nanda Arjuna; Mohamad Irwan Afandi; Abdul Rezha Efrat Najaf
JURNAL TEKNOLOGI DAN OPEN SOURCE Vol. 8 No. 1 (2025): Jurnal Teknologi dan Open Source, June 2025
Publisher : Universitas Islam Kuantan Singingi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jtos.v8i1.4413

Abstract

Thesis administration at the higher education level, such as in the Physics Study Program, still faces challenges due to the absence of an integrated system. To address this issue, a web-based Thesis Management Application was developed to support five main user roles: Students, Lecturers, Thesis Coordinators, Program Coordinators, and Administrators. The system offers a comprehensive set of features including authentication, pre-proposal submission, advisor scheduling, seminar and exam management, publication submission, oral examinations, and final graduation requirements. This study focuses on the Quality Assurance (QA) process using the Scrum methodology and Software Testing Life Cycle (STLC) framework over six sprints conducted within three months. The process began with the mapping of 225 functional requirements on the Front-End and 206 on the Back-End, which were then translated into 1240 test cases derived from various usage scenarios, authorization validations, and interaction flow explorations. Non-functional testing was also conducted at the end of the sixth sprint, covering aspects such as portability, usability, performance, availability, and security. The results show that all system requirements were successfully met, indicating that the application is feasible for supporting a structured thesis administration process.
Forecasting and Raw Material Planning in Traditional Songkok Production Using ARIMA and Simple Exponential Smoothing Sayyidah Nafisah; Abdul Rezha Efrat Najaf; Prasasti Karunia Farista Ananto
JUSIFO : Jurnal Sistem Informasi Vol 11 No 1 (2025): June
Publisher : Program Studi Sistem Informasi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/jusifo.v11i1.27833

Abstract

This study investigates the applicability of time series forecasting models—Autoregressive Integrated Moving Average (ARIMA) and Simple Exponential Smoothing (SES)—for optimizing raw material planning in traditional songkok production. Utilizing monthly production data from a small-scale manufacturer in East Java, Indonesia (July 2020–August 2024), the ARIMA(1,1,1) model demonstrated superior forecasting performance, particularly under weak and irregular seasonality. Compared to SES, ARIMA yielded lower MAE, MSE, and MAPE values, enabling more precise production planning. The forecasts were translated into raw material requirements, resulting in improved inventory precision and operational efficiency, with monthly material usage gains ranging from 2.05% to 2.18%. These improvements are especially critical for micro-enterprises constrained by limited resources and seasonally driven demand cycles. While the univariate approach is a limitation, the findings provide a foundation for integrating contextual data in future multivariate models. The study offers practical insights for digital transformation in artisanal sectors and contributes to the broader discourse on data-driven production planning in culturally embedded industries.
Convolutional Neural Network Approach for Aspect-Based Sentiment Analysis of Tourism Reviews Siti Oktavia Eka Putri; Amalia Anjani Arifiyanti; Abdul Rezha Efrat Najaf
bit-Tech Vol. 8 No. 1 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i1.2582

Abstract

The tourism industry is a key economic sector in Indonesia, with East Java ranking highest in tourist visits. This study aims to enhance tourism development by applying aspect-based sentiment analysis (ABSA) using convolutional neural networks (CNN) to analyze online reviews. CNN was selected for this study due to its proven efficiency in capturing local n-gram features and its relatively lower computational cost compared to other deep learning model. Reviews from TripAdvisor and Google Maps were collected focusing on four aspects: attraction, amenities, access, and price. Five different models were developed in this research: one multilabel aspect classifier designed to identify multiple aspects mentioned within each review, and four sentiment classifiers focused on evaluating the sentiment polarity for each specific aspect. These models were trained and evaluated using various combinations of word embeddings, including static embeddings like Word2Vec, and contextualized embeddings such as BERT and IndoBERT. Additionally, the impact of preprocessing through stemming was investigated to understand how simplifying word forms affects model performance. Results indicate that IndoBERT-CNN attains the best overall sentiment classification, reaching F1-scores up to 0.71 for attraction and 0.93 for amenities, while Word2Vec-CNN with stemming leads multilabel classification. Meanwhile stemming improves performance for static embeddings like Word2Vec by simplifying word forms, it reduces effectiveness in transformer-based models like BERT and IndoBERT that rely on natural language context. These findings highlight the benefit of choosing appropriate embeddings and preprocessing for different tasks, thus providing practical insights for improving tourism services through better tourist reviews analysis.
Comparison of Adam, RMSprop, and SGD on DenseNet121 for Tomato Leaf Disease Classification Heni Lusiana Dewi; Amalia Anjani Arifiyanti; Abdul Rezha Efrat Najaf
bit-Tech Vol. 8 No. 1 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i1.2684

Abstract

Diseases affecting tomato leaves can severely impact agricultural productivity, as they can reduce crop yields and quality significantly. A swift and dependable identification of these diseases is vital for ensuring prompt interventions and the successful implementation of disease control strategies. This study focus on evaluating and comparing the efficiency of three separate optimizers, such as Adam, RMSProp, and SGD on the pretrained Convolutional Neural Network (CNN) architecture DenseNet121. There has been no previous research that directly compares the performance of Adam, RMSProp, and SGD optimizers on the DenseNet121 model for classifying tomato leaf diseases using the Plant Village dataset. These optimizers are crucial in the training process by influencing the model’s ability to converge and generalize well on new, unseen data. Experimental procedures were performed using a labeled dataset of tomato leaf images, which included healthy leaves and various disease classes. Out of the three optimization techniques tested, the DenseNet121 model trained with the Adam optimizer consistently outperformed the others. It achieved the highest evaluation metrics, with an accuracy of 0.9800, precision of 0.9807, recall of 0.9800, and F1-score of 0.9800 on the test set. These outcomes suggest that the model has a strong and balanced classification performance, capable of correctly identifying disease conditions with minimal errors. Based on these findings, the DenseNet121 architecture combined with the Adam optimizer is considered the optimal model used to recognize various tomato leaf diseases in this study.
UI/UX Development of a Boarding House Reservation Application: A Design Thinking Approach in Surabaya Azizatul Fara Dibah; Abdul Rezha Efrat Najaf; Prasasti Karunia Farista Ananto
bit-Tech Vol. 8 No. 2 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i2.3320

Abstract

Fragmented, inconsistent, and frequently outdated information about boarding-house availability, facilities, and pricing remains a persistent usability problem in existing digital platforms. Current UI/UX and reservation-system research has not sufficiently addressed these issues within the specific context of urban rental ecosystems, creating gap in designing solutions that respond to the needs of both tenants and property owners. This study addresses that gap by developing and evaluating a user-centered interface for a boarding-house reservation application using the five-stage Design Thinking framework: empathize, define, ideate, prototype, and test. Insights were gathered from 30 participants representing owners, tenants, and administrators in Surabaya, forming the basis for personas, information architecture, user flows, and low- to high-fidelity prototypes designed in Figma. Usability and interface quality were examined through task-based testing, the System Usability Scale (SUS), and Nielsen’s heuristic evaluation to integrate both user perception and normative usability standards. Initial testing produced SUS scores of 74.5 (owners), 76.5 (tenants), and 66 (administrators), indicating acceptable but improvable usability and several interface issues. Iterative refinement led to marked enhancements, with second-round SUS scores of 90, 87, and 89, accompanied by high learnability (96–97%), strong memorability (95–96%), and low error rates (0.0306–0.0800). A minor efficiency decrease was attributed to unstable network conditions rather than design flaws. Overall, the findings demonstrate that structured, iterative UI/UX development supported by heuristic auditing effectively resolves core information and interaction challenges in boarding-house reservation systems. The final prototype demonstrates high usability and provides a replicable design rationale for future implementation and scaling.
Design and Development of a Web-Based Boarding House Management Information System Using RAD Method Mohamad Ilham Praditya Arifatul Nesta; Abdul Rezha Efrat Najaf; Seftin Fitri Ana Wati
bit-Tech Vol. 8 No. 2 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i2.3342

Abstract

The rapid growth of urban migration in Indonesia, particularly among students and workers, has increased the demand for efficient and integrated boarding house management systems. However, many boarding house businesses still rely on manual processes for tenant registration, payment tracking, and data recording, leading to inefficiencies and data inaccuracies. This study aims to design and develop a web-based boarding house management information system to optimize operational performance and enhance service quality for both owners and tenants. The system was developed using the Rapid Application Development (RAD) method, which emphasizes iterative prototyping, user involvement, and rapid feedback to ensure functional alignment with user requirements. The application was built with ReactJS for the frontend, ExpressJS for the backend, and PostgreSQL as the database, integrated with the Midtrans payment gateway to enable secure, real-time transactions. A key contribution of this study is the combination of RAD methodology with Midtrans integration, providing a scalable and user-friendly solution for small-scale property management. The system’s functionality was tested using Black Box Testing, confirming that all features operated correctly according to design specifications. The results demonstrate that the system successfully streamlines management workflows, reduces human error by 25%, and improves the user experience by reducing administrative processing time by 30%. This study contributes to the digital transformation of small-scale property management by demonstrating the feasibility of using low-cost, scalable technologies to enhance operational efficiency and service transparency.
Web-Based E-Commerce System Design Using RAD Method: A Case Study of PT Muda Jaya Export Rizki Setyo Putro Robawa; Nur Cahyo Wibowo; Abdul Rezha Efrat Najaf
JURNAL TEKNOLOGI DAN OPEN SOURCE Vol. 8 No. 1 (2025): Jurnal Teknologi dan Open Source, June 2025
Publisher : Universitas Islam Kuantan Singingi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jtos.v8i1.4420

Abstract

This study focused on the design and development of a web-based e-commerce information system for PT. Muda Jaya Export by employing the Rapid Application Development (RAD) approach. The company had been experiencing inefficiencies in handling transactions, inventory, and order management due to the reliance on manual tools such as Microsoft Excel and communication via WhatsApp. These outdated methods often led to data inconsistencies and delays in processing operations. To address these challenges, the new system was built to streamline and centralize various business functions, including sales transactions, pre-order handling, safety stock monitoring, and reorder point calculation. The platform featured capabilities such as online product ordering, real-time pre-order tracking, automated safety stock and reorder point computations, and secure payment integration through Midtrans. The system was implemented using modern web technologies, including React.js for the frontend, Express.js for the backend, and PostgreSQL for the database. To ensure functionality and user satisfaction, the system underwent testing through the Blackbox Testing technique as well as User Acceptance Testing (UAT). The testing outcomes demonstrated that the newly developed system significantly enhanced the accuracy and efficiency of the company’s sales and inventory operations. With this integrated solution, PT. Muda Jaya Export was better equipped to manage its business processes, reducing operational errors and delays. Furthermore, the system contributed to improved data reliability and provided valuable support for making informed decisions related to inventory levels and customer orders.
Co-Authors Agung Brastama Putra Agussalim Agussalim Agussalim, Agussalim Agussalim, Agussalim Aisha Ramadhana Indira Santoso AlHafizh, Hadyan Alla, Muhammad Anbiya Fath Amalia Anjani Arifiyanti Ana Wati, Seftin Fitri Anastasia Lidya Maukar Andreas Nugroho Sihananto Anggreani, Nilam Kumallah Anik Vega Vitianingsih Anindo Saka Fitri Apriyanti, Narti Arief Yahya Prasetio Arinta Ardiyono, Taufiq Arochma, Novita Maulana Aryo Sulistiono, Wisnu Asif Faroqi Aulia Putri Fajar Aulia Rahma, Faradhiya Aviolla Terza Damaliana Ayu Lintang Pratiwi Azizatul Fara Dibah Badriyyah, Shofiyyatul Bilqis, Thufailah Nafiisah Bonda Sisephaputra Cahyo Wibowo, Nur Chilmi, Farid Daniar, Ivan Faiz Devilia Dwi Candra Dewangga Nanda Arjuna Dhian Satria Yudha Kartika Egga Naufal Daffa Tanadi Fais Irwanda Fajar Kurnia Ferdiansyah, Rizky Fitri Ana Wati, Seftin Fitri, Anindo Saka Hadi, Tasya Diva Fortuna Hamdan, Arva Rizqullah Haq, Ahmad Nashirul Heni Lusiana Dewi Iqbal Ramadhani Mukhlis Ivan Faiz Daniar Jannah Arum Kemangi, Anisya Khanza Afiatul Jeremy David Alexander Jojok Dwiridotjahjono Kadek Dwi Natasya Pradnyani Kartika, Dhian Satria Yudha Khoirul Tarmidzi M Aldan Adiar Firdaus Manti, Rival Septian Jeflin Maulana, M. Kandias Happy Mawardi, Alfiandi Imam Mohamad Ilham Praditya Arifatul Nesta Mohamad Irwan Afandi Muhammad Muharrom Al Haromainy Mustika, Yesi Rahma Nabila Octavianti Nabila, Achmad Wildan najoan rizki Nisrina, Nasywa Nurdin, Andi Nuryananda, Praja Firdaus Paloma Ransi Permatasari, Reisa Prasasti Karunia Farista Ananto Prasasti Karunia Farista Ananto Purnaningsih, Elwis Ghaitza Radhyana Gayatri Faradilla Rafli Fahreza Rio Alghaniy Putra Rizka Hadiwiyanti Rizka Hadiwiyanti Rizki Setyo Putro Robawa Rudiany, Novita Putri Saka Fitri, Anindo Sakti, Ciptagusti Sila Salsabilla, Kharisma Agustya Zahra Sayyidah Nafisah Seftin Fitri Ana Wati Setiawan, Moch Rezeki Shafira, Putri Dian Shofiyyatul Badriyyah Sila Sakti, Ciptagusti Siti Oktavia Eka Putri Sriyanti, Zilvi Azus Sulastri, Eka Nanda Suryo Widodo Tita Ayu Rospricilia Tri Luhur Indayanti Sugata Wahyuni, Eka Dyar Wati, Seftin Fitri Ana Wibowo, Nur Cahyo Wulansari, Anita Yudha, Dhian Satria Zein, Isynariyah