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All Journal International Journal of Evaluation and Research in Education (IJERE) Jupiter Jurnal Simetris Jurnal Informatika JSI: Jurnal Sistem Informasi (E-Journal) International Conference on Engineering and Technology Development (ICETD) Jurnal Ilmu Komputer dan Agri-Informatika Explore: Jurnal Sistem Informasi dan Telematika (Telekomunikasi, Multimedia dan Informatika) Jurnal Informatika Jurnal Teknologi Informasi dan Ilmu Komputer Jurnal Edukasi dan Penelitian Informatika (JEPIN) Scientific Journal of Informatics Seminar Nasional Informatika (SEMNASIF) Sisforma: Journal of Information Systems Jurnas Nasional Teknologi dan Sistem Informasi Journal of Information Systems Engineering and Business Intelligence Register: Jurnal Ilmiah Teknologi Sistem Informasi KLIK (Kumpulan jurnaL Ilmu Komputer) (e-Journal) International Journal of Artificial Intelligence Research Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Sains dan Informatika Jurnal Ilmiah Matrik JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal Sisfokom (Sistem Informasi dan Komputer) MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer Jurnal Mantik Journal of Information Systems and Informatics Jurnal Abdi Insani Jurnal Teknologi Informatika dan Komputer Journal of Software Engineering Ampera Djtechno: Jurnal Teknologi Informasi JURNAL ILMIAH SAINS TEKNOLOGI DAN INFORMASI Jurnal Informatika: Jurnal Pengembangan IT Indonesia Bergerak: Jurnal Hasil Kegiatan Pengabdian Masyarakat
Usman Ependi
Universitas Bina Darma
Agriculture, Biological Sciences & Forestry Humanities 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Other

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Predicting Bitcoin and Ethereum Prices Using the Long Short- Term Memory (LSTM) Model Aswadi, M; Ependi, Usman
Journal of Information System and Informatics Vol 7 No 3 (2025): September
Publisher : Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51519/journalisi.v7i3.1228

Abstract

Cryptocurrency is a highly volatile digital asset, necessitating accurate and adaptive forecasting methods. This study implements a Long Short-Term Memory (LSTM) model to predict the daily closing prices of two leading cryptocurrencies Bitcoin (BTC) and Ethereum (ETH) using historical data from Yahoo Finance and Binance. To enhance data richness and model robustness, datasets from both sources were vertically merged. The methodological framework included data preprocessing, Min–Max normalization, formation of 24-day sliding input windows, and training across three data split ratios (70:30, 80:20, and 90:10). Model performance was evaluated using the Root Mean Squared Error (RMSE). Results indicate that the LSTM model achieved high prediction accuracy, with the lowest RMSE values of 0.0137 for BTC and 0.0152 for ETH using the combined dataset with a 90:10 split. Beyond modeling, a web-based application was developed using Streamlit, enabling users to perform real-time predictions and export results. This study contributes to the field of cryptocurrency forecasting by demonstrating that multi-source data integration significantly improves predictive accuracy and model generalization. The proposed framework offers both theoretical insights and practical tools for researchers and investors in financial technology.
Predicting Accounts Receivable of the Social Security Administration for Employment Using LSTM Algorithm Khansa, Ainna; Ependi, Usman
Journal of Information System and Informatics Vol 7 No 4 (2025): December
Publisher : Asosiasi Doktor Sistem Informasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63158/journalisi.v7i4.1274

Abstract

This study explores the use of Long Short-Term Memory (LSTM) networks for predicting outstanding contributions from employers to the BPJS Ketenagakerjaan, Indonesia’s social security agency. The research aims to address the challenges BPJS faces due to delayed or unpaid contributions, which impact the institution's operational stability and financial health. The LSTM model, a deep learning technique well-suited for time-series prediction, was applied to historical data from BPJS Ketenagakerjaan to predict overdue contributions across three different training-validation splits: 70:30, 80:20, and 90:10. The results demonstrate that the 80:20 split achieved the highest validation accuracy of 84.71%, offering the optimal balance between training data and model generalization. The model's ability to predict overdue contributions with high accuracy could significantly improve BPJS's receivables management, allowing for more proactive financial planning and risk mitigation. The study also highlights the integration of an attention mechanism within the LSTM model, enhancing its predictive capabilities by focusing on the most relevant historical data. This research contributes to the field of predictive analytics in public sector financial management, showcasing the potential of machine learning in enhancing the efficiency and effectiveness of social security programs.
Oil and Gas Production Forecasting Based on LSTM Model: A Case Study of PT Pertamina Hulu Rokan Zone 4 Billan, Angel Caroline; Ependi, Usman
Journal of Information System and Informatics Vol 7 No 4 (2025): December
Publisher : Asosiasi Doktor Sistem Informasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63158/journalisi.v7i4.1285

Abstract

This study addresses the critical need for accurate oil and gas production forecasting to support strategic decision-making in Indonesia’s energy sector. PT Pertamina Hulu Rokan Zone 4 (PHR Zona 4), a key player in national energy production, frequently encounters technical and external operational challenges. To tackle these issues, this research proposes a deep learning-based predictive model using the Long Short-Term Memory (LSTM) architecture, structured in an encoder-decoder format and enhanced with an attention mechanism. The model was trained and tested on historical oil and gas production data from PHR Zona 4, evaluated under two data-splitting scenarios: 80:20 and 90:10. Model performance was assessed using Mean Absolute Percentage Error (MAPE), Root Mean Square Error (RMSE), Mean Absolute Error (MAE), and the coefficient of determination (R²). Results from the 80:20 scenario showed RMSE of 5.83, MAE of 5.54, MAPE of 1.71%, and R² of -1.97, suggesting difficulties in capturing extreme data fluctuations. However, the 90:10 scenario demonstrated significantly improved performance with RMSE of 0.42, MAE of 0.36, MAPE of 0.11%, and R² of 0.00, indicating better trend prediction stability. The novelty of this study lies in the integration of attention mechanisms within the LSTM encoder-decoder framework for oil and gas time series forecasting, offering enhanced accuracy and robustness. This research provides a valuable foundation for future improvements in predictive analytics and operational efficiency in the oil and gas industry.
Pengujian Usability dengan Teknik System Usability Scale pada Test Engine Try Out Sertifikasi Suyanto Suyanto; Usman Ependi
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol. 19 No. 1 (2019)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v19i1.503

Abstract

Test engine try out is an information system used by prospective alumni students to practice the questions in taking the certification exams at Bina Darma University. Exercises that can be done on this test engine are vendor certifications such as Microsoft Technology Associate, SAP, NIIT, PASAS, CISCO, and various other certifications. To ascertain whether the test engine is in line with the expectations and needs of the participants try out then an evaluation is carried out. The evaluation technique used is usability with the system usability scale approach. System usability scale is an information system evaluation technique that looks at three aspects, namely adjective rating, grade scale, acceptability by involving end users in the evaluation process. In the process of evaluating the usability scale system, ten instruments were used as a measure of evaluation. From the evaluation, the final result is 87.33. According to these conditions, it can be concluded that the test engine try out from the side of the adjective rating includes the excellence group, from the grade scale side including B group, and from the acceptability side including the acceptable group.
URL-Based Phishing Detection Using a BERT-LSTM Model Hilman Singgih Wicaksana; Usman Ependi; Ari Muzakir
Journal of Information System and Informatics Vol 8 No 1 (2026): February
Publisher : Asosiasi Doktor Sistem Informasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63158/journalisi.v8i1.1543

Abstract

The rising prevalence of phishing websites presents substantial cybersecurity threats by deceiving users into revealing sensitive information through malicious URLs. This study aims to enhance phishing URL detection by introducing a deep learning model that combines Bidirectional Encoder Representations from Transformers (BERT) with Long Short-Term Memory (LSTM). In this framework, BERT is fine-tuned on a phishing URL dataset and utilized as a contextual embedding to represent URL tokens, while Bayesian Optimization is employed to identify optimal hyperparameter settings during model training. Experimental results demonstrate that the BERT-LSTM model achieves impressive detection performance, with a precision of 0.9299, recall of 0.9795, F1-score of 0.9540, accuracy of 0.9756, and ROC-AUC of 0.9962. The model consistently outperforms embedding-based methods such as Word2Vec, FastText, and GloVe, as well as a classical baseline model using Logistic Regression with TF-IDF features. These findings suggest that the contextual embeddings generated by BERT effectively capture structural patterns in URLs, leading to more accurate phishing detection and providing a promising approach for enhancing cybersecurity systems.
A Novel Hybrid Classification on Urban Opinion Using ROS-RF: A Machine Learning Approach Usman Ependi; Nahdatul Akma Ahmad
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.8042

Abstract

Urban opinion from crowdsourced data often leads to imbalanced datasets due to the diversity of issues related to urban social, economic, and environmental topics. This study presents a novel hybrid approach that combines Random Over-Sampling and Random Forest (ROS-RF) to effectively classify such imbalanced data. Using crowdsourced urban opinion data from Jakarta, experimental results show that the ROS-RF method outperforms other approaches. The ROS-RF classifier achieved an impressive F1-score, recall, precision, and accuracy of 98%. These findings highlight the superior effectiveness of the ROS-RF method in classifying urban opinions, especially those related to social, economic, and environmental issues in urban settings. This hybrid approach provides a robust solution for managing imbalanced datasets, ensuring more accurate and reliable classification outcomes. The study underscores the potential of ROS-RF in enhancing urban data analysis and decision-making processes
Artificial intelligence in education: a bibliometric analysis of emerging trends Lim Seong Pek; Nahdatul Akma Ahmad; Faiz Zulkifli; Fatin Syamilah Che Yob; Usman Ependi; Geoffrey Rhoel C. Cruz
International Journal of Evaluation and Research in Education (IJERE) Vol 15, No 1: February 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v15i1.34428

Abstract

This study investigates the transformative potential of artificial intelligence (AI) in education through a bibliometric analysis of 291 scholarly works retrieved from the Web of Science (WoS) database. Traditional methods of instruction are under threat from the growing demand for individualized and equitable education, particularly in underserved communities. This study looks at how AI innovations, like virtual assistants and adaptive learning platforms, can enhance learning outcomes and the efficacy of instruction in order to address these concerns. The methodology used co-occurrence and co-citation analyses to map research trends and find educational and AI thematic clusters. Pedagogical frameworks, medical education innovations, ethical governance, generative AI applications, and AI acceptance are the five main research areas highlighted in the findings. With 5,246 citations and an H-index of 42, the data show how widely used AI is in both academia and industry. Adaptive learning models, moral dilemmas, and AI literacy are emerging themes. According to this research, AI has the potential to improve accessibility, equity, and quality in education while tackling issues like algorithmic bias and digital divides. This is in line with sustainable development goal 4 (quality education). Teachers, legislators, and technologists can use this study’s thorough intellectual landscape to gain practical insights on how to responsibly incorporate AI into educational systems for more sustainable innovation.
ANALISIS TINGKAT KEMATANGAN DOMAIN LAYANAN SISTEM PEMERINTAHAN BERBASIS ELEKTRONIK MENGGUNAKAN E-GOVERNMENT MATURITY MODEL PADA PEMERINTAH KOTA PALEMBANG rianda pratama; Muhammad Izman Herdiansyah; Tata Sutabri; Zaid Amin; Usman Ependi
Djtechno: Jurnal Teknologi Informasi Vol 6, No 1 (2025): April
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/djtechno.v6i1.6198

Abstract

Pemerintah negara Indonesia melakukan percepatan pembangunan pemerintahan yang berbasis elektronik. Pada tahun 2018 Presiden Republik Indonesia mengeluarkan peraturan yang dituangkan ke dalam Perpres Nomor 95 Tahun 2018 tentang sistem pemerintahan berbasis elektronik. SPBE terdiri dari 4 domain utama yaitu domain kebijakan, tata kelola, manajemen dan layanan. Berdasarkan dari nilai bobot domain, domain layanan merupakan domain yang memiliki bobot nilai tertinggi yaitu 45,50%. Guna mendukung percepatan SPBE perlunya dilakukan penilaian tingkat kematangan domain layanan SPBE. Saat ini di kota Palembang belum melakukan penilaian secara sistematis terhadap nilai domain layanan SPBE maka dari itu perlu dilakukan penilaian secara sistematis menggunakan  framework SPBE berdasarkan Permenpan-RB Nomor 59 Tahun 2020. Domain layanan SPBE terbagi menjadi dua aspek yaitu aspek layanan administrasi pemerintahan berbasis elekronik yang terdiri dari 10 indikator penilaian dan layanan publik berbasis elektronik yang memiliki 6 indikator penilaian. Hasil penilaian 16 Indikator domain layanan tersebut menghasilkan nilai indeks aspek layanan administrasi pemerintahan sebesar 3,45 dan indeks aspek layanan publik sebesar 4,0. Berdasarkan hasil nilai indeks aspek tersebut dapat diketahui capaian nilai indeks domain layanan sistem pemerintahan berbasis elektronik pada pemerintah kota Palembang yaitu 3,67 dengan predikat Sangat Baik
DIGITALISASI LAYANAN KOPERASI SAWIT BERBASIS WEB-MOBILE: STUDI PKM DI KOPERASI JAYA SEMPURNA, PALI Usman Ependi; Sabeli Aliya; Dedi Irawan
Jurnal Abdi Insani Vol 12 No 12 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i12.3104

Abstract

The main issues faced by the target partner are the limited access to technical information regarding oil palm cultivation and the inefficiency of manual data management in the cooperative. To address these issues, the program proposes a solution in the form of the development of the Agrisawit application (for farmers) and the Cooperative Dashboard (for cooperative managers), both web and mobile-based, which is expected to facilitate farmers in accessing information related to oil palm cultivation, as well as making it easier for cooperative managers to manage data and communicate with members. The main objective of this community service program is to improve the operational efficiency and productivity of oil palm farmers at Koperasi Jaya Sempurna, Desa Pengabuan, Kecamatan Abab, Kabupaten PALI, South Sumatra Province, through the implementation of a digital-based information system. The program also includes digital literacy training for cooperative managers and members. Evaluation results show an 80% increase in application usage, a productivity increase in oil palm ranging from 45-90%, and a 90% improvement in the operational efficiency of the cooperative. This program is expected to have a sustainable positive impact on the cooperative and its members, and to serve as a model for the development of technology-based agribusiness in rural areas.
Perancangan Prototype Sistem Manajemen Quiz Berbasis Web Untuk Mendukung Evaluasi Pelatihan Menggunakan Figma M.Robi Maulana; Usman Ependi
JURNAL ILMIAH SAINS TEKNOLOGI DAN INFORMASI Vol. 4 No. 3 (2026): Juli : Jurnal Ilmiah Sains Teknologi dan Informasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jiti.v4i3.1999

Abstract

The development of information technology has provided convenience in supporting training activities and competency evaluation within companies. Training is one of the important activities carried out to improve participants’ knowledge, skills, and abilities in accordance with organizational needs. To determine the success of training, an evaluation process is required to measure participants’ level of understanding of the material that has been delivered. Based on observations conducted at a company, the training evaluation process still requires a more structured, interactive, and user-friendly medium. The company’s identity is not directly disclosed due to its confidentiality policy; therefore, the research object in this article is referred to as Company X. This study focuses on designing a prototype of a dashboard Quiz Management System using Figma. The system is designed to support question management, quiz library, quiz implementation through QR Code, quiz result presentation, question discussion, and leaderboard features. The purpose of this study is to produce a prototype design that can serve as an initial reference for developing a web-based training evaluation system that is more modern, structured, interactive, and suitable for user needs.
Co-Authors Abel Arisandi Ade Putra Ade Putra Antoni, Darius Ari Muzakir Ari Wibowo Arjun, Jennifer Aswadi, M Berlianti, Marutha Billan, Angel Caroline Dedi Irawan Edi Surya Negara Evi Yulianingsih Faiz Zulkifli Fatin Syamilah Che Yob Febriyanti Panjaitan Febriyanti Panjaitan Ferdiansyah Ferdiansyah Firamon Syakti Firamon Syakti, Firamon Fitri Purwaningtias Gege Ardiyansyah Geoffrey Rhoel C. Cruz Haidar Mirza, A. Haidar Mirza, Ahmad Hamim Tezar Rizandi Heri Suroyo Hutrianto Irwansyah Irwansyah Khansa, Ainna Kisworo, Marsudi Wahyu Kurniawan, Tri Basuki Lim Seong Pek M. Octa Prasetya M.Robi Maulana Mikko, Mikko Muhammad Hafid Alfarisi Muhammad Haikal Muhammad Izman Herdiansyah Muhammad Izman Herdiansyah Muhammad Ridho Kurniawan Mukmin, Chairul Nahdatul Akma Ahmad Nahdatul Akma Ahmad Novaria Kunang, Yesi Novifika, Seva Nurwijayanti Nyimas Sopiah Oktaviani, Nia Oktaviani, Nia Oktaviani, Nia Purwaningtias, Fitri Qoriani Widayati Rianda Pratama Sabeli Aliya Sabeli Aliya Suyanto Suyanto Suyanto Suyanto Tata Sutabri Tri Basuki Kurniawan Valdo, Muhammad Wahyu Caesarendra Wicaksana, Hilman Singgih Widya Cholil Wulandari, Intan Fitriana Yesi Novaria Kunang Yukos Pratama Zaid Amin