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All Journal Building of Informatics, Technology and Science KLIK: Kajian Ilmiah Informatika dan Komputer
Ken Ditha Tania
Universitas Sriwijaya, Palembang
Computer Science & IT

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Pengaruh Knowledge Sharing dan Knowledge Acquisition Factor Terhadap Niat Penggunaan E-Learning Sebagai Media Pembelajaran Menggunakan Metode PLS-SEM Adya Salwa Dyani; Ken Ditha Tania; Ari Wedhasmara; Allsela Meiriza
KLIK: Kajian Ilmiah Informatika dan Komputer Vol. 4 No. 2 (2023): Oktober 2023
Publisher : STMIK Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/klik.v4i2.1260

Abstract

E-learning at Sriwijaya University is an electronic learning system used to provide education and training to students through an online platform. In its use, e-learning provides students with the flexibility to study independently, according to their schedule and needs. This study provides an important insight into the factors affecting students’ intention to use e-learning as a learning medium, especially in the context of the aftermath of COVID-19. The results of this study can be used by colleges and educational institutions to increase the effectiveness of e-learning in online learning. This study aims to investigate the influence of knowledge sharing and knowledge acquisition factors on the intention of using e-learning as a learning medium in the academic environment after COVID-19. Factors studied include Subjective Norms (SN), Self-Efficacy (SE), Knowledge Sharing (KS), Knowledge Acquisition (KA), Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Satisfaction (SAT), and Adherence (SAT). This study used the Expectation Confirmation Model (ECM) research model. Data were collected through a survey of active students at Sriwijaya University, with a sample of 500 respondents. Data analysis uses Partial Least Squares-Structural Equation Modeling (PLS-SEM) method. Research results show that important Knowledge Management factors such as Knowledge Sharing (KS) and Knowledge Acquisition (KA) have a positive effect on reviewing the intention of using e-learning as a learning medium. Other factors also have a positive and significant effect on e-learning intentions
Classification of School Students Lifestyle Risks Based on Smoking Behavior Using Naïve Bayes Oktaria Dwi Cahyani; Deltari Balka; Dinni Rezky Amelia; Rainda Cintari Aulya; Ken Ditha Tania; Allsela Meiriza; Zaqqi Yamani
Building of Informatics, Technology and Science (BITS) Vol 8 No 1 (2026): June 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v8i1.9668

Abstract

This study aims to classify students' lifestyle risks based on smoking behavior using the Naïve Bayes algorithm within a knowledge management framework. The research was conducted on students at a vocational high school within the coverage area of a local community health center. The dataset consisted of 277 valid records after undergoing data selection, cleaning, and transformation stages. The modeling process was carried out using RapidMiner software with an 80:20 data split for training (221 students) and testing (56 students). The evaluation metrics used included accuracy, precision, recall, and confusion matrix. The experimental results demonstrate that the Naïve Bayes model achieved an accuracy of 85.92%, precision of 86.12%, and recall of 92.86% for the unhealthy class. Furthermore, the classification results were integrated into a knowledge management framework to support decision-making processes in schools and community health centers. This study contributes to the application of predictive data mining in adolescent health and demonstrates how classification models can serve as effective tools for early detection, preventive interventions, and evidence-based policy formulation in educational and health settings.
Komparasi Model Ensemble dan Algoritma Machine Learning Untuk Memprediksi Penyakit Jantung Muhammad Syarief Albani; Dedy Kurniawan; Ken Ditha Tania
Building of Informatics, Technology and Science (BITS) Vol 7 No 4 (2026): March 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v7i4.8346

Abstract

This study compared the performance of nine machine learning algorithms in predicting heart disease using a dataset dating back to 1988 and consisting of four databases: Cleveland, Hungary, Switzerland, and Long Beach totaling 1025 data. The dataset used includes medical features that reflect physiological states, clinical examination results, and cardiovascular risk factors, namely age, gender, type of chest pain, resting blood pressure, serum cholesterol levels, fasting blood sugar levels, resting electrocardiography results, maximum heart rate, chest pain during physical activity, ST segment depression, ST segment slope, number of major blood vessels visible by fluoroscopy, and thalassemia status. The stages of this study include data cleaning, data transformation, and evaluation carried out using the data splitting method for training and testing as well as K-fold cross-validation with metrics of accuracy, precision, recall, F1 score, and AUC-ROC. The algorithms used in this study are Decision Tree, Random Forest, Support Vector Machine, MLP Classifier, Bagging Classifier, Gradient Boosting, CatBoost, XGBoost, and LightGBM with ensemble-based models, such as CatBoost, Random Forest, XGBoost, and LightGBM, showing consistent performance on various evaluation metrics when compared to non-ensemble models. Among all models tested, CatBoost showed the best performance, with an accuracy reaching 98%, an F1-Score of 0.980, and a Recall of 0.9875 then followed by other ensemble algorithms such as Random Forest, XGBoost and LightGBM. The results of this study indicate that ensemble models are proven to be more effective in predicting heart disease. This study aims to present an in-depth comparative study of the performance of ensemble algorithms and modern machine learning in predicting heart disease, as well as enriching the literature related to the application of Knowledge Discovery in the health sector and providing a basis for selecting more reliable prediction algorithms to support clinical decision making and the development of machine learning-based heart disease diagnosis support systems.
Analisis Segmentasi Pelanggan Menggunakan RFM dan K-Means Clustering sebagai Dasar Penyusunan Aturan Pendukung Keputusan Meisya Dwi Andini; Rafa Nadira Catra; Weli Ratri Homausyah; Haaniyah Aurelia; Allsela Meiriza; Ken Ditha Tania; Zaqqi Yamani
Building of Informatics, Technology and Science (BITS) Vol 7 No 4 (2026): March 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v7i4.9511

Abstract

One of the important methods in supporting data-driven Customer Relationship Management (CRM) initiatives is customer segmentation. However, in practice, segmentation results are often limited to descriptive analysis and are not further utilized in decision-support processes. This study aims to utilize customer segmentation results based on the Recency, Frequency, Monetary (RFM) approach and the K-Means algorithm as a basis for developing decision-support recommendations. The research stages include data preprocessing, RFM value calculation, normalization using the Min-Max Scaling method, and determining the optimal number of clusters using the Elbow Method and Silhouette Score. The evaluation results indicate that the optimal number of clusters is four, with a Silhouette Score of 0.61, which reflects a moderately good level of cluster separation. The segmentation results classify customers into four categories: High Value/VIP Customers, Loyal Customers, Potential Customers, and Low Value/Dormant Customers, each exhibiting distinct transactional behavior characteristics. These characteristics are then interpreted into decision rules using IF–THEN logic; for example, customers with low Recency, high Frequency, and high Monetary values are recommended strategies such as loyalty rewards and upselling. The findings suggest that customer segmentation can be extended beyond descriptive analysis and utilized as a practical basis for marketing decision-making, although the approach remains relatively simple and heuristic-based. The contribution of this study is to integrate RFM-KMeans segmentation results with IF–THEN decision rules to generate more applicable marketing strategy recommendations in supporting data-driven decision making.
Klasifikasi Status Gizi Bayi sebagai Upaya Deteksi Dini Masalah Gizi Menggunakan Algoritma Naive Bayes Muhammad Rafif AR; Fathoni Fathoni; Ken Ditha Tania; Allsela Meiriza; Ali Ibrahim
Building of Informatics, Technology and Science (BITS) Vol 8 No 2 (2026): September 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v8i2.9490

Abstract

The classification of infant nutritional status remains a significant challenge in the utilization of health data, particularly in developing predictive models that are accurate and reliable for supporting decision-making at the primary healthcare level. This study aims to implement the Naïve Bayes algorithm to classify infant nutritional status based on anthropometric indicators, namely weight-for-age (W/A) and height-for-age (H/A). The data used in this study were obtained from Posyandu activity reports at Citra Medika Public Health Center covering the period from 2023 to 2025, with a total of 10,654 infant records. The class distribution in the dataset includes normal, well-nourished, undernourished, severely undernourished, overnourished, and at risk of overnutrition categories. Since the class proportions are relatively balanced, no oversampling technique was applied. The research process involved several stages, including data cleaning, category normalization, class label transformation, and dataset splitting using stratified sampling with a composition of 80% training data and 20% testing data. The evaluation results indicate that the Naïve Bayes model achieved an accuracy of 82%. The precision values were 0.92 for the normal class, 0.39 for the malnutrition class, and 0.14 for the overweight class. The recall values were 0.89 for the normal class, 0.63 for the malnutrition class, and 0.08 for the overweight class. Meanwhile, the F1-scores were 0.83 for the normal class, 0.48 for the malnutrition class, and 0.11 for the overweight class. These findings suggest that the model demonstrates fairly good performance in classifying infant nutritional status based on anthropometric data. Therefore, the Naïve Bayes algorithm can be considered effective for classifying infant nutritional conditions using W/A and H/A indicators. This study is expected to contribute to the development of data-driven systems to enhance analytical quality and support decision-making in primary healthcare services.
Comparative Evaluation of CNN, Random Forest, and SVM for Deepfake Image Classification Dyo Arya Purnama; Idris Sonny; Ongki Juliandra; Dhafin Rizky Trisandy; Ken Ditha Tania; Alsella Meiriza
Building of Informatics, Technology and Science (BITS) Vol 8 No 1 (2026): June 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v8i1.9555

Abstract

Deepfake image detection remains a challenging image classification problem because the effectiveness of a detection model can vary according to the classification approach and image representation used. This study comparatively evaluates three classification algorithms, namely Convolutional Neural Network (CNN), Random Forest, and Support Vector Machine (SVM), for distinguishing real facial images from deepfake images. The dataset consists of two classes, real and deepfake images, which undergo preprocessing through resizing to 32 × 32 pixels and pixel normalization from 0–255 to 0–1. The preprocessed dataset is divided into 80% training data and 20% testing data. CNN performs feature learning through convolutional layers, whereas Random Forest and SVM perform classification based on the prepared image feature representation. Model performance is evaluated using accuracy, precision, recall, and F1-score on the testing data. The experimental results show that CNN achieves the highest performance, with 91% accuracy, 93% precision, 88% recall, and 91% F1-score, followed by SVM with 77% accuracy and Random Forest with 75% accuracy. Thus, under the experimental conditions of this study, CNN provides better classification performance than the two conventional machine-learning algorithms. However, the result is limited to the dataset, 32 × 32 pixel input representation, and experimental configuration used in this study; therefore, the 91% accuracy should not be interpreted as evidence of general superiority across other datasets or deepfake generation techniques. These findings provide an empirical comparison of the three approaches and highlight the need for cross-dataset and higher-resolution evaluation in subsequent research.
Co-Authors Adya Salwa Dyani Ali Ibrahim Allsela Meiriza Alsella Meiriza Ari Wedhasmara Dedy Kurniawan Deltari Balka Dhafin Rizky Trisandy Dinni Rezky Amelia Dyo Arya Purnama Fathoni - Haaniyah Aurelia Idris Sonny Meisya Dwi Andini Muhammad Rafif AR Muhammad Syarief Albani Oktaria Dwi Cahyani Ongki Juliandra Rafa Nadira Catra Rainda Cintari Aulya Weli Ratri Homausyah Zaqqi Yamani