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All Journal Jurnal Teknologi dan Manajemen Informatika Jurnal Tata Kelola dan Kerangka Kerja Teknologi Informasi Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) J-Intech (Journal of Information and Technology) Journal Innovations Computer Science
Ramadhan, Viry Puspaning
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Library & Information Science

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Analisis Perbandingan Algoritma Forecasting dalam Prediksi Harga Saham LQ45 PT Bank Mandiri Sekuritas (BMRI) Ramadhan, Viry Puspaning; Pamuji, Fandi Yulian
Jurnal Teknologi dan Manajemen Informatika Vol. 8 No. 1 (2022): Juni 2022
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmi.v8i1.6092

Abstract

Economic development in Indonesia has slowed in recent years. This resulted in the movement of the index for several stocks listed on BEIm, especially LQ45 which also experienced increases and decreases. Therefore, it is necessary to analyze stock price movements so that the results of the analysis can be used by investors to make investment decisions. This study will apply several Forecasting algorithms such as Linear Regression and Neural Network to predict the stock price of LQ45 in the case study of Bank Mandiri Sekuritas (BMRI). By using four attributes, namely open, high, and low values as predictors and close as a class, this study focuses on determining the accuracy value, namely Root Mean Squared Error (RMSE) by optimizing parameter values. The test results obtained an RMSE value of 0.034 on the Neural Network method with the addition of a hidden layer and an RMSE value of 0.052 on the Linear Regression method with M5 Prime and Greedy Feature Selection with a min-tolerance value of 0.05.
Klasterisasi Komentar Cyberbullying Masyarakat di Instagram berdasarkan K-Means Clustering Ramadhan, Viry Puspaning; Namung, Giasinta Mareskoti
J-INTECH (Journal of Information and Technology) Vol 11 No 1 (2023): J-Intech : Journal of Information and Technology
Publisher : LPPM STIKI MALANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v11i1.846

Abstract

Cyberbullying has become a serious problem on social media platforms like Instagram. In an effort to overcome this problem, this study aims to classify cyberbullying comments made by Instagram users. The method used in this study is K-Means Clustering, which is a grouping technique commonly used in data analysis. The comment data collected from Instagram is then analyzed using the K-Means Clustering algorithm to identify patterns and groups of similar comments. The findings from this study can provide a better understanding of the types and characteristics of cyberbullying comments that often appear on Instagram. By knowing groups of similar comments, prevention and response measures can be designed more effectively. In addition, the results of clustering can also help in the development of automatic detection algorithms to identify cyberbullying comments on social media platforms. Based on the evaluation carried out on the clustering results with a silhouette score = 0.690152, namely in cluster C1, which is a negative cluster. So, the most dominant cyberbullying comments are negative comments.
Perancangan UI/UX Layanan Jahit Pakaian Dengan Menggunakan Pendekatan Design Thinking di Kota Malang Lefteuw, Everista Richarda; Ramadhan, Viry Puspaning
J-INTECH (Journal of Information and Technology) Vol 12 No 1 (2024): J-Intech : Journal of Information and Technology
Publisher : LPPM STIKI MALANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v12i1.1150

Abstract

The development of technology greatly affects the needs of life and the way people think, especially the development of technology software. This then makes the development of User Interface (UI) and User Experience (UX) need to be a concern. Currently, the number of tailors in Malang City is increasing and has different specialties, and consumer demand is also increasing so that to get a sewing place, customers must take the time and come directly to the tailor. The problem is, not everyone can find out all the locations of sewing places around his house and whether the sewing place can still accept customers or not. This research aims to design a prototype application of clothing sewing services in Malang City and to provide information on clothing sewing services that can meet the needs of the community. Researchers use the Application of Design Thinking because it is able to produce more innovative and effective solutions in designing products or services and use the figma application to design prototypes. The testing process is carried out online using Maze Design as a test on interface design and System Usability Scale (SUS) which aims to measure user perceptions of interface usability. The test results using SUS (system usability scale) obtained an average value of 71.38, so it can be concluded that the system is well received.
Pengaruh Kualitas Layanan terhadap Kepuasan dan Loyalitas Pengguna Brimo Menggunakan Model E-Service Quality Adut, Fransiska Armelia; Ramadhan, Viry Puspaning
J-INTECH (Journal of Information and Technology) Vol 12 No 02 (2024): J-Intech : Journal of Information and Technology
Publisher : LPPM STIKI MALANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v12i02.1288

Abstract

The purpose of this study is to evaluate the quality of service offered by Bank Rakyat Indonesia's (BRI) BRIMO application, and how this impacts user satisfaction and loyalty. The Servqual method was used to survey 100 students of Universitas Merdeka Malang (UNMER). The results showed that five dimensions of service quality-tangibles, responsiveness, reliability, empathy, and assurance significantly impacted user satisfaction and loyalty. The physical elements of the BRIMO application, specifically internet availability and system responsiveness, have a significant influence on user satisfaction and user loyalty. Users are more satisfied because of the BRIMO staff responsiveness to their feedback, while users feel more comfortable and satisfied that the privacy and security of their data is guaranteed. The ability of BRIMO employees to communicate well and provide full attention increases user satisfaction and user loyalty. This research shows that improving the service quality of digital banking apps is critical to maintaining user satisfaction and their loyalty.
Komparasi Naïve Bayes dan K-NN Dalam Analisis Sentimen di Twitter Terhadap Kemenangan Paslon 02 Azizah, Alfira Fitri Nur; Ramadhan, Viry Puspaning
J-INTECH (Journal of Information and Technology) Vol 12 No 02 (2024): J-Intech : Journal of Information and Technology
Publisher : LPPM STIKI MALANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v12i02.1305

Abstract

The 2024 Presidential and Vice Presidential Election stands out as a highly awaited political event by the people of Indonesia. The vote counts result, or real count, of the 2024 election have sparked a variety of reactions, both supportive and opposing, especially on social media platforms like Twitter, due to the lead of candidate pair number 02. This study utilizes Twitter as a data source for opinion interpretation. The Naïve Bayes and K-NN were chosen in this study, and their performances are tested and compared. The research results present Naïve Bayes with an accuracy rate of 87.35% +/- 1.81% (micro average: 87.35%), while K-NN algorithm achieved an accuracy rate of 69.68% +/- 3.14% (micro average: 69.68%) using a data partition ratio of 90:10. The analysis results indicate that Naïve Bayes is more effective than K-Nearest Neighbor.
Analisis Cluster Untuk Pemetaan Status Gizi Balita Puskesmas Lowokwaru Berdasarkan Antropometri Ramadhan, Viry Puspaning; Putri, Devita Maulina; Laksana, Indra Dwi; Munisah, Dian Fitri Islamiah
Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Vol 9 No 2 (2025): APRIL-JUNE 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jtik.v9i2.3261

Abstract

This research examines the mapping of nutritional status in toddlers as an important indicator for assessing child health and development, focusing on the Lowokwaru Health Center in Malang. Data shows that the mapping of nutritional status is still not accurate, prompting this study to identify toddlers at risk of stunting and design appropriate interventions. Quick and accurate mapping of nutritional status is crucial for reducing the risk of stunting and preventing malnutrition in toddlers. The data used comes from anthropometric measurements, including height-for-age (HAZ), weight-for-height (WHZ), and weight-for-age (WAZ). The method applied is K-Means clustering, where, after preprocessing the data, the researchers determine the number of clusters and centroids. Grouping is conducted by calculating Euclidean distance. The results indicate that 75% of toddlers at the Lowokwaru Health Center are experiencing excess nutrition and are at risk of stunting. These findings provide a strong basis for enhancing interventions and preventing stunting in the region.
User Interface Evaluation and Design Recommendations for the Tulungagung Portal Website Using the Heuristic Evaluation Method Maula, Sheila Hikmatul; Ramadhan, Viry Puspaning; Jatmiko, Andriyan Rizki
Journal Innovations Computer Science Vol. 4 No. 2 (2025): November
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jics.v4i2.300

Abstract

Government websites serve as essential platforms for delivering information and public services online, yet many still face usability challenges. The present study evaluates the user interface of the Tulungagung Regency Government website and provides interface improvement recommendations. The research utilized a heuristic evaluation method involving three evaluators and applied ten heuristic principles to identify usability issues. Data were collected through direct observation, documentation, and user questionnaires. Interface improvement recommendations were designed as a high-fidelity prototype using Figma. To test the effectiveness of the proposed design, usability testing was conducted using the System Usability Scale (SUS) method involving 25 respondents. The study found key issues including inconsistent visual design, disorganized menu structure, and lack of system feedback. The usability testing results indicated a significant increase in usability scores with the redesigned prototype compared to the original version. The research contributes to the development of more user-friendly government websites and can serve as a reference for similar interface evaluations in the public sector.
Analisis Tata Kelola TI untuk Pembukuan Digital UMKM dengan COBIT 2019: Studi Kasus Taylor Cahaya Ramadhan, Rafif Pramatya; Ramadhan, Viry Puspaning
Jurnal Tata Kelola dan Kerangka Kerja Teknologi Informasi Vol. 11 No. 2 (2025): September 2025
Publisher : Universitas Komputer Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/jtk3ti.v11i2.16617

Abstract

Penelitian ini bertujuan untuk mengevaluasi kesiapan sistem pembukuan digital pada usaha mikro Taylor Cahaya menggunakan pendekatan modular dari framework COBIT 2019. Permasalahan utama terletak pada proses pencatatan keuangan yang dilakukan secara manual, tidak terdokumentasi secara formal, serta belum adanya struktur peran dan prosedur baku yang mendukung pengelolaan informasi keuangan secara sistematis. Penelitian menggunakan pendekatan deskriptif kualitatif melalui wawancara dan observasi, dengan evaluasi difokuskan pada domain APO01, DSS01, dan BAI02. Hasil menunjukkan bahwa seluruh domain berada pada level kapabilitas 1 (Performed) dengan nilai rata-rata 1,22 dari target level 3. Temuan ini mengindikasikan bahwa proses telah berjalan sebagian, namun belum terdokumentasi secara konsisten dan belum dikelola secara formal. Penelitian ini memberikan kontribusi dalam bentuk peta kesiapan kapabilitas sistem pembukuan yang dapat menjadi dasar pengembangan tata kelola keuangan berbasis digital di level usaha mikro. Untuk menjawab permasalahan tersebut, penelitian ini menyarankan solusi dalam bentuk rekomendasi berdasarkan masing-masing Practice ID, yang mencakup pembentukan peran administratif serta penyusunan Standar Operasional Prosedur (SOP) pembukuan yang disusun mengacu pada arahan domain EDM02.
Co-Authors Adut, Fransiska Armelia Andriyan Rizki Jatmiko Azizah, Alfira Fitri Nur Devita Maulina Putri, Devita Maulina Fandi Yulian Pamuji Laksana, Indra Dwi Lefteuw, Everista Richarda Maula, Sheila Hikmatul Munisah, Dian Fitri Islamiah Namung, Giasinta Mareskoti Ramadhan, Rafif Pramatya