https://www.ijiis.org/index.php/IJIIS/issue/feed 2026-03-08T20:19:52+07:00 Prof. Abdel Badeeh M Salem editor@ijiis.org Open Journal Systems <div style="position: relative; margin: 0 0 24px 0; padding: 22px 0 20px 0; overflow: hidden; border-top: 2px dotted #7e8795; border-bottom: 1px solid #dfe5ef; box-sizing: border-box;"> <div style="position: absolute; right: 0; bottom: 0; width: 180px; height: 65px; opacity: 0.25; background-image: radial-gradient( circle, #1749c6 1.7px, transparent 2px ); background-size: 13px 13px; pointer-events: none;"> </div> <div style="position: relative; z-index: 2; margin: 0 0 5px 0; color: #1749c6; font-size: 12px; line-height: 1.4; font-weight: 800; letter-spacing: 1.7px; text-transform: uppercase;">Journal Profile</div> <div style="position: relative; z-index: 2; margin: 0; padding: 0; color: #292f3a; font-size: 30px; line-height: 1.25; font-weight: 800; letter-spacing: -0.4px;">IJIIS: International Journal of Informatics and Information Systems</div> </div> <p><!-- PROFILE AND COVER --></p> <div style="display: flex; flex-wrap: wrap; align-items: stretch; gap: 24px; width: 100%; margin: 0 0 28px 0;"><!-- JOURNAL INFORMATION --> <div style="flex: 1 1 570px; min-width: 280px; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 15px; background: #ffffff; box-shadow: 0 8px 24px rgba(21,52,120,0.08);"> <div style="position: relative; overflow: hidden; padding: 18px 22px; color: #ffffff; background: linear-gradient( 135deg, #1249ca 0%, #173daf 58%, #1b56d4 100% );"> <div style="position: absolute; top: 0; right: 0; width: 45%; height: 100%; opacity: 0.7; background-image: radial-gradient( circle, rgba(255,255,255,0.28) 1.5px, transparent 1.9px ); background-size: 13px 13px; pointer-events: none;"> </div> <div style="position: relative; z-index: 2; margin: 0; color: #ffffff; font-size: 19px; line-height: 1.3; font-weight: 800;">Journal Information</div> </div> <!-- INFORMATION ROWS --> <div style="padding: 8px 22px 18px 22px;"> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Journal title</div> <div style="flex: 1 1 240px; color: #202a3a; font-weight: 500;">IJIIS: International Journal of Informatics and Information Systems</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Abbreviation</div> <div style="flex: 1 1 240px; color: #102f72; font-weight: 800;">IJIIS</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Electronic ISSN</div> <div style="flex: 1 1 240px;"><span style="color: #1749c6; font-weight: 800;"> 2579-7069 </span></div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Publication frequency</div> <div style="flex: 1 1 240px; color: #202a3a;">Four issues per year</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Publication months</div> <div style="flex: 1 1 240px; color: #202a3a;">January, March, September, and December</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">DOI</div> <div style="flex: 1 1 240px;"><a style="color: #1749c6; font-weight: 800; text-decoration: none;" href="https://doi.org/10.47738/ijiis"> 10.47738/ijiis </a></div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Peer-review model</div> <div style="flex: 1 1 240px; color: #202a3a;">Single-blind peer review</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid #edf0f5;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Access model</div> <div style="flex: 1 1 240px; color: #202a3a;">Open access</div> </div> <div style="display: flex; flex-wrap: wrap; padding: 10px 0 0 0;"> <div style="flex: 0 0 165px; padding-right: 18px; box-sizing: border-box; color: #667085; font-weight: 600;">Language</div> <div style="flex: 1 1 240px; color: #202a3a;">English</div> </div> </div> </div> </div> <p><!-- JOURNAL METADATA CARDS --></p> <div style="display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 28px 0;"> <div style="position: relative; flex: 1 1 180px; min-height: 110px; padding: 17px 17px 17px 22px; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 13px; background: #ffffff;"> <div style="position: absolute; top: 0; left: 0; width: 5px; height: 100%; background: #1749c6;"> </div> <div style="margin-bottom: 7px; color: #667085; font-size: 11px; line-height: 1.4; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;">Electronic ISSN</div> <div style="color: #102f72; font-size: 20px; line-height: 1.25; font-weight: 800;">2579-7069</div> <div style="margin-top: 5px; color: #667085; font-size: 12px; line-height: 1.5;">International Standard Serial Number</div> </div> <div style="position: relative; flex: 1 1 180px; min-height: 110px; padding: 17px 17px 17px 22px; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 13px; background: #ffffff;"> <div style="position: absolute; top: 0; left: 0; width: 5px; height: 100%; background: #1749c6;"> </div> <div style="margin-bottom: 7px; color: #667085; font-size: 11px; line-height: 1.4; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;">DOI</div> <div style="color: #102f72; font-size: 20px; line-height: 1.25; font-weight: 800;">10.47738/ijiis</div> <div style="margin-top: 5px; color: #667085; font-size: 12px; line-height: 1.5;">Journal DOI prefix</div> </div> <div style="position: relative; flex: 1 1 180px; min-height: 110px; padding: 17px 17px 17px 22px; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 13px; background: #ffffff;"> <div style="position: absolute; top: 0; left: 0; width: 5px; height: 100%; background: #1749c6;"> </div> <div style="margin-bottom: 7px; color: #667085; font-size: 11px; line-height: 1.4; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;">Frequency</div> <div style="color: #102f72; font-size: 20px; line-height: 1.25; font-weight: 800;">4 Issues</div> <div style="margin-top: 5px; color: #667085; font-size: 12px; line-height: 1.5;">Published every year</div> </div> <div style="position: relative; flex: 1 1 180px; min-height: 110px; padding: 17px 17px 17px 22px; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 13px; background: #ffffff;"> <div style="position: absolute; top: 0; left: 0; width: 5px; height: 100%; background: #1749c6;"> </div> <div style="margin-bottom: 7px; color: #667085; font-size: 11px; line-height: 1.4; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;">Access</div> <div style="color: #102f72; font-size: 20px; line-height: 1.25; font-weight: 800;">Open Access</div> <div style="margin-top: 5px; color: #667085; font-size: 12px; line-height: 1.5;">Freely accessible research</div> </div> </div> <p><!-- ABOUT JOURNAL --></p> <div style="margin: 0 0 26px 0; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 15px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: relative; margin: 0; padding: 16px 20px 16px 31px; border-bottom: 1px solid #dfe5ef; color: #102f72; background: #f8faff; font-size: 18px; line-height: 1.35; font-weight: 800;">About the Journal</div> <div style="padding: 21px;"> <p style="margin: 0 0 14px 0; color: #364152; text-align: justify;"><strong style="color: #102f72;"> IJIIS: International Journal of Informatics and Information Systems </strong> is an international peer-reviewed journal dedicated to the exchange of high-quality research results in all aspects of Informatics, Information Systems, Information Technology, and Data Sciences.</p> <p style="margin: 0 0 14px 0; color: #364152; text-align: justify;">The journal publishes state-of-the-art research papers addressing fundamental theories, experiments, simulations, and practical applications. Published manuscripts are expected to present a systematic proposed method, an adequate review of previous studies, a comprehensive discussion of findings, and a concise conclusion.</p> <p style="margin: 0; color: #364152; text-align: justify;">As part of its commitment to advancing Informatics and Information Systems research, IJIIS implements an open-access policy. All published articles are freely available online without subscription barriers.</p> </div> </div> <p><!-- FOCUS AND SCOPE --></p> <div style="margin: 0 0 26px 0; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 15px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: relative; padding: 16px 20px 16px 31px; border-bottom: 1px solid #dfe5ef; color: #102f72; background: #f8faff; font-size: 18px; line-height: 1.35; font-weight: 800;">Focus and Scope</div> <div style="padding: 21px;"> <p style="margin: 0 0 17px 0; color: #364152; text-align: justify;">IJIIS provides a forum for the exchange of research findings, analysis, information, and knowledge in areas that include, but are not limited to, the following:</p> <div style="display: flex; flex-wrap: wrap; gap: 14px;"> <div style="flex: 1 1 320px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe6f3; border-radius: 12px; background: #eef3ff;"> <div style="margin: 0 0 7px 0; color: #102f72; font-size: 16px; font-weight: 800;">Informatics</div> <div style="color: #4d5a70; font-size: 13px; line-height: 1.65;">Operating systems, algorithms, computer architecture, computer networks, computer security, embedded systems, cloud computing, Internet of Things, robotics, and computer hardware.</div> </div> <div style="flex: 1 1 320px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe6f3; border-radius: 12px; background: #eef3ff;"> <div style="margin: 0 0 7px 0; color: #102f72; font-size: 16px; font-weight: 800;">Information Systems</div> <div style="color: #4d5a70; font-size: 13px; line-height: 1.65;">ICT interaction with society, ICT applications in social science, ICT as a social research tool, ICT education, e-business, and e-government.</div> </div> <div style="flex: 1 1 320px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe6f3; border-radius: 12px; background: #eef3ff;"> <div style="margin: 0 0 7px 0; color: #102f72; font-size: 16px; font-weight: 800;">Data Sciences</div> <div style="color: #4d5a70; font-size: 13px; line-height: 1.65;">Statistical analysis, data mining, big data, artificial intelligence, text mining, machine learning, predictive analytics, and computational intelligence.</div> </div> <div style="flex: 1 1 320px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe6f3; border-radius: 12px; background: #eef3ff;"> <div style="margin: 0 0 7px 0; color: #102f72; font-size: 16px; font-weight: 800;">Information Technology</div> <div style="color: #4d5a70; font-size: 13px; line-height: 1.65;">Information management, Internet technologies, mobile technologies, digital platforms, information infrastructure, and technology-enabled services.</div> </div> </div> </div> </div> <p><!-- PEER REVIEW PROCESS --></p> <div style="margin: 0 0 26px 0; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 15px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: relative; padding: 16px 20px 16px 31px; border-bottom: 1px solid #dfe5ef; color: #102f72; background: #f8faff; font-size: 18px; line-height: 1.35; font-weight: 800;">Peer Review Process</div> <div style="padding: 21px;"><!-- STEP 1 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0 0 20px 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">1</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Initial Editorial Review</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">The editor evaluates whether the submitted manuscript is suitable for IJIIS based on the journal's focus and scope, readability, methodological quality, similarity score, and compliance with the journal template.</div> </div> </div> <!-- STEP 2 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0 0 20px 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">2</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Similarity and Quality Screening</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">The manuscript is screened using Crosscheck-Turnitin or another approved similarity-detection system. Manuscripts with significant methodological flaws or excessive similarity may be rejected.</div> </div> </div> <!-- STEP 3 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0 0 20px 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">3</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Single-Blind Peer Review</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">Manuscripts that pass the initial screening are sent to at least two qualified reviewers under a single-blind peer-review process.</div> </div> </div> <!-- STEP 4 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0 0 20px 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">4</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Author Revision</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">Reviewer comments are sent to the corresponding author. The author must revise the manuscript and provide a structured response to each comment.</div> </div> </div> <!-- STEP 5 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0 0 20px 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">5</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Editorial Decision</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">The editorial team evaluates the revised manuscript and the authors' responses before the editor communicates the final decision.</div> </div> </div> <!-- STEP 6 --> <div style="display: flex; align-items: flex-start; gap: 15px; margin: 0;"> <div style="display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 50%; color: #ffffff; background: #1749c6; font-size: 14px; font-weight: 800;">6</div> <div> <div style="margin: 0 0 4px 0; color: #102f72; font-size: 15px; font-weight: 800;">Copyediting and Production</div> <div style="color: #566174; font-size: 13px; line-height: 1.65;">Accepted manuscripts proceed to copyediting, proofreading, and layout preparation before publication of the final camera-ready article.</div> </div> </div> </div> </div> <p><!-- POLICY CARDS --></p> <div style="display: flex; flex-wrap: wrap; gap: 18px; margin: 0 0 26px 0;"> <div style="position: relative; flex: 1 1 340px; overflow: hidden; padding: 21px; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 14px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: absolute; right: -25px; bottom: -25px; width: 110px; height: 110px; border-radius: 50%; background: #eef3ff;"> </div> <div style="position: relative; z-index: 2; margin: 0 0 8px 0; color: #102f72; font-size: 18px; font-weight: 800;">Publication Frequency</div> <div style="position: relative; z-index: 2; color: #566174; font-size: 13px; line-height: 1.7;">IJIIS publishes four issues each year. Regular issues are published in January, March, September, and December.</div> </div> <div style="position: relative; flex: 1 1 340px; overflow: hidden; padding: 21px; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 14px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: absolute; right: -25px; bottom: -25px; width: 110px; height: 110px; border-radius: 50%; background: #eef3ff;"> </div> <div style="position: relative; z-index: 2; margin: 0 0 8px 0; color: #102f72; font-size: 18px; font-weight: 800;">Open Access Policy</div> <div style="position: relative; z-index: 2; color: #566174; font-size: 13px; line-height: 1.7;">This journal provides immediate open access to its content based on the principle that making research freely available supports a wider global exchange of knowledge.</div> </div> </div> <p><!-- IMPORTANT DATES --></p> <div style="margin: 0 0 26px 0; overflow: hidden; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 15px; background: #ffffff; box-shadow: 0 7px 22px rgba(21,52,120,0.06);"> <div style="position: relative; padding: 16px 20px 16px 31px; border-bottom: 1px solid #dfe5ef; color: #102f72; background: #f8faff; font-size: 18px; line-height: 1.35; font-weight: 800;">Important Dates</div> <div style="display: flex; flex-wrap: wrap; gap: 14px; padding: 21px;"> <div style="flex: 1 1 220px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 12px; background: #f8faff;"> <div style="margin-bottom: 6px; color: #667085; font-size: 11px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase;">Paper Submission</div> <div style="color: #102f72; font-size: 14px; line-height: 1.5; font-weight: 800;">Open throughout the year</div> </div> <div style="flex: 1 1 220px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 12px; background: #f8faff;"> <div style="margin-bottom: 6px; color: #667085; font-size: 11px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase;">Acceptance Notification</div> <div style="color: #102f72; font-size: 14px; line-height: 1.5; font-weight: 800;">Approximately 6–8 weeks after submission</div> </div> <div style="flex: 1 1 220px; padding: 17px; box-sizing: border-box; border: 1px solid #dfe5ef; border-radius: 12px; background: #f8faff;"> <div style="margin-bottom: 6px; color: #667085; font-size: 11px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase;">Online Publication</div> <div style="color: #102f72; font-size: 14px; line-height: 1.5; font-weight: 800;">January, March, September, and December</div> </div> </div> </div> https://www.ijiis.org/index.php/IJIIS/article/view/296 2026-03-08T20:11:13+07:00 Slamet Widodo swidodo0090@gmail.com Budi Santoso santoso01@gmail.com

The rapid growth of Artificial Intelligence (AI) has led to significant shifts in the job market, making accurate forecasting essential for workforce planning and policy-making. This study aims to compare the effectiveness of two time series forecasting models, SARIMA and Prophet, in predicting AI job market trends. The primary focus was to evaluate their performance using RMSE and Time Series Cross-Validation (TSCV). The SARIMA model outperformed Prophet, particularly when capturing seasonal patterns, achieving an RMSE of 83.42, compared to Prophet's 136.01. The results demonstrate that SARIMA’s parameter tuning and seasonality handling contribute to more reliable forecasts, while Prophet’s flexibility offers advantages in non-linear data scenarios. The study provides valuable insights for stakeholders in adapting workforce strategies, particularly in AI-driven sectors, by recommending SARIMA for seasonal trends and Prophet for volatile, non-linear data.

2026-03-08T00:00:00+07:00 Copyright (c) 2026 International Journal of Informatics and Information Systems https://www.ijiis.org/index.php/IJIIS/article/view/297 2026-03-08T20:13:43+07:00 Emi Yuliati 24ma41d0161@students.amikompurwokerto.ac.id Oktavia Mulyo Nurdiyanti 24ma41d0151@students.amikompurwokerto.ac.id

Adequate hydration is essential for maintaining optimal health and performance, yet individual hydration needs vary due to factors such as physical activity, environmental conditions, and demographic characteristics. Traditional methods of hydration assessment often overlook these dynamic factors, making it difficult to provide personalized recommendations. This study aims to develop a Random Forest Regression model to predict daily water intake based on physical activity levels, weather conditions, and demographic information. The model was trained and evaluated using a dataset that included these variables, and performance was assessed using metrics such as Mean Squared Error (MSE), Mean Absolute Error (MAE), and R-squared (R²). The results showed that the Random Forest Regression model achieved an R² value of 0.8527, indicating that it explained over 85% of the variance in daily water intake. The MSE (0.1010) and MAE (0.2630) values confirmed that the model made accurate predictions. This study contributes to the field by offering a personalized approach to hydration prediction, which could be integrated into health applications and fitness tracking systems. By incorporating real-time physical activity data and environmental factors, the model provides dynamic hydration recommendations that can optimize health outcomes, particularly for high-risk groups such as athletes and the elderly. This research demonstrates the potential of Random Forest Regression for improving hydration management and advancing personalized health recommendations.

2026-03-08T00:00:00+07:00 Copyright (c) 2026 International Journal of Informatics and Information Systems https://www.ijiis.org/index.php/IJIIS/article/view/298 2026-03-08T20:17:05+07:00 Aulia Abikhair abikhair01@upi.edu Huang Guanghui huangguanghuii@upi.edu

Breast cancer remains one of the leading causes of cancer-related mortality among women worldwide, making early and accurate diagnosis essential for improving survival rates and treatment outcomes. To address limitations associated with conventional diagnostic methods, Machine Learning (ML) techniques have been increasingly adopted to enhance classification accuracy and reduce diagnostic variability. This study presents a comparative evaluation of four widely used ML algorithms Random Forest, Support Vector Machine (SVM), K-Nearest Neighbors (KNN), and Logistic Regression applied to a structured breast cancer diagnostic dataset. The dataset comprises morphological and texture-based features extracted from digitized tumor samples, enabling binary classification of benign and malignant cases. The models were trained using an 80:20 train–test split and validated through k-fold cross-validation. Performance evaluation was conducted using accuracy, precision, recall, F1-score, and confusion matrix analysis to ensure comprehensive assessment of classification behavior. Experimental results indicate strong predictive performance across all models, with overall accuracy values ranging from 0.95 to 0.96. Among the evaluated approaches, Random Forest demonstrated the most balanced performance, particularly achieving the highest recall for malignant tumors and the lowest false-negative rate, which is critical in clinical diagnostics. Feature importance analysis further revealed that tumor area, concave points, radius, and perimeter were the most influential predictors in classification decisions, consistent with established clinical indicators of malignancy. These findings confirm that classical and interpretable machine learning algorithms, especially ensemble-based methods, remain highly effective for structured breast cancer classification tasks. The study contributes to the advancement of reliable and transparent ML-based decision-support systems, supporting improved early detection and diagnostic accuracy in breast cancer care.

2026-03-08T00:00:00+07:00 Copyright (c) 2026 International Journal of Informatics and Information Systems https://www.ijiis.org/index.php/IJIIS/article/view/299 2026-03-08T20:18:31+07:00 Ika Christine Purba ikachristinepurba1@mail.ugm.ac.id Aulia Al-JIhad Safhadi ssafhadi@mail.ugm.ac.id

This study explores the use of ML models to classify driver behavior as either Distracted or Aggressive, using data derived from real-world driving scenarios. Two ML algorithms, Random Forest (RF) and Support Vector Machine (SVM), were applied to classify driver behavior based on key features such as brake_pressure, lane_deviation, and headway_distance. The RF model outperformed the SVM model, achieving an accuracy of 95% compared to 94% for SVM. The study demonstrates that brake_pressure and headway_distance are the most important features for detecting Aggressive driving, while lane_deviation is crucial for identifying Distracted driving. The findings suggest that RF is particularly effective in handling complex, high-dimensional data, providing accurate and reliable predictions. The results contribute to the advancement of road safety technologies by enhancing the detection of unsafe driving behaviors, which can be integrated into Advanced Driver Assistance Systems (ADAS) and autonomous vehicles. Future work should focus on expanding the dataset, integrating more diverse sensor data, and exploring more complex ML models, such as deep learning, to further improve classification accuracy and real-time performance in real-world applications.

2026-03-08T00:00:00+07:00 Copyright (c) 2026 International Journal of Informatics and Information Systems https://www.ijiis.org/index.php/IJIIS/article/view/300 2026-03-08T20:19:52+07:00 Priya Sakthi Kumar priyasakthikumar1@gmail.com Vinoth Kumar P vinothkumar1@gmail.com

Customer churn prediction is a critical challenge in e-commerce, as retaining existing customers is often more cost-effective than acquiring new ones. This study evaluates the effectiveness of three machine learning algorithms Logistic Regression (LR), Random Forest (RF), and Extreme Gradient Boosting (XGBoost) for predicting customer churn using a structured e-commerce dataset that integrates demographic, behavioral, engagement, and transactional features. A systematic preprocessing pipeline was implemented, including missing value imputation, categorical encoding, and feature scaling where appropriate. Model performance was assessed using Accuracy, Precision, Recall, F1-Score, and Confusion Matrix analysis. The results reveal a clear performance gap between linear and ensemble-based approaches. Logistic Regression achieved 77% accuracy but demonstrated limited recall for churned customers, indicating reduced sensitivity in identifying at-risk users. In contrast, Random Forest and XGBoost both achieved 92% accuracy and substantially improved recall and F1-Score for the churn class. Among the evaluated models, XGBoost showed the strongest overall performance, achieving the highest recall and lowest false negatives, making it particularly suitable for retention-focused applications. The findings confirm that ensemble and boosting-based models are more effective in capturing nonlinear interactions among multidimensional churn determinants in e-commerce environments. This study contributes empirical evidence supporting the adoption of advanced machine learning approaches for customer retention optimization and provides practical guidance for integrating churn prediction models into e-commerce platforms.

2026-03-08T00:00:00+07:00 Copyright (c) 2026 International Journal of Informatics and Information Systems