Garuda - Garba Rujukan Digital

Unsupervised Learning for MNIST with Exploratory Data Analysis for Digit Recognition Hery, Hery; Haryani, Calandra A.; Widjaja, Andree E.; Tarigan, Riswan E.; Aribowo, Arnold
Journal of Applied Data Sciences Vol 5, No 2: MAY 2024
Publisher : Bright Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47738/jads.v5i2.184

This research investigates the application of unsupervised learning techniques for digit recognition using the MNIST dataset. Through a comparative analysis, various dimensionality reduction methods, including ISOmap, PCA, and tSNE, were evaluated for their effectiveness in visualizing and processing the MNIST data. The findings reveal that tSNE consistently outperforms ISOmap and PCA in terms of accuracy, F1- score, precision, and recall, showcasing its superior capability in preserving relevant information within the dataset. Utilizing tSNE for visualizing and clustering digits provides valuable insights into the underlying structure of the dataset, uncovering complex patterns in digit relationships. These results contribute to the advancement of digit recognition systems, offering potential improvements in classification accuracy and model reliability. The success of tSNE highlights the importance of nonlinear dimensionality reduction techniques in handling complex datasets, such as MNIST. This research underscores the significance of unsupervised learning approaches, particularly tSNE, in enhancing digit recognition systems' performance, with implications extending across various application domains. Continued research is recommended to explore further applications and potentials of unsupervised learning techniques and to deepen our understanding of the MNIST dataset's structure and complexity.

INNOVATIVE KNOWLEDGE MANAGEMENT STRATEGIES TRANSFORMING ORGANIZATIONAL SUCCESS Wijaya, Yoana Sonia; Haryani, Calandra A.; Hery, Hery; Widjaja, Andree E.; Tarigan, Riswan E.
Proceeding National Conference Business, Management, and Accounting (NCBMA) 7th National Conference Business, Management, and Accounting
Publisher : Faculty of Economics and Business Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar

In the current information technology era, knowledge management plays a critical role in the growth and success of enterprises. Knowledge management techniques are not used in the same manner as previously due to advancements in technology. Current knowledge management practices can benefit greatly from the application of emerging technological trends like web 2.0, social networks, wikis and blogs, discussion forums, and artificial intelligence. This will increase organizational performance and efficiency. The purpose of this study is to investigate the growing influence of knowledge management techniques on organizational effectiveness. This study examines earlier research on the subject of how organizational performance is impacted by emerging trends in knowledge management strategies. The literature review approach, or literature study from earlier research publications linked to this topic, was the research method used in this study. The research findings are presented in the form of a model, which suggests that increasing organizational performance and competitiveness is positively and significantly correlated with the introduction of new trends in knowledge management methods. Organizations can increase their performance and competitiveness in a market that is becoming more and more competitive by implementing effective knowledge management methods, according to the implications of this research.

PERANCANGAN SISTEM INFORMASI MANAJEMEN DAN REGISTRASI DATA WINISUDA BERBASIS WEB DAN MOBILE DI UNIVERSITAS PELITA HARAPAN Mouw, Christ Wibowo; Hery, Hery; Haryani, Calandra Alencia; Widjaja, Andree E.; Tarigan, Riswan E.
Proceeding National Conference Business, Management, and Accounting (NCBMA) 7th National Conference Business, Management, and Accounting
Publisher : Faculty of Economics and Business Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Sebagai Institusi Pendidikan, UPH melihat peranan teknologi sebagai aspek pendukung yang penting dalam melangsungkan aktivitas rutin proses pendidikan. UPH membutuhkan sistem informasi yang dapat mengelola informasi dengan baik dan efektif, disetiap departemen yang ada. Student Life merupakan salah satu departemen di UPH yang bertanggung jawab untuk setiap kegiatan kemahasiswaan yang berlangsung di UPH. Student Life memiliki 3 divisi yaitu Student Services, Student Stewardship, dan Spiritual Growth for Student. Divisi Student Stewardship memiliki bagian fokus nya masing-masing, salah satunya bertanggung jawab serta melangsungkan wisuda di UPH. Selama melaksanakan proses registrasi, panitia wisuda menggunakan Microsoft Excel untuk keperluan registrasi dan pengolahan data. Panitia wisuda perlu menyesuaikan data Microsoft Excel yang diberikan oleh ADAK untuk mendapatkan gambaran seberapa banyak data winisudawan yang akan diwisudakan. Sistem akan dirancang berbasis web untuk sisi admin dan mobile untuk sisi user. Hasil dari penelitian ini merupakan sistem yang berfungsi untuk mendukung proses kegiatan wisuda di Universitas Pelita Harapan secara efisien. Penelitian ini dibuat dengan tujuan untuk membantu proses sistem registrasi dan manajemen data winisuda bagi divisi Student Stewardship untuk menunjang perkembangan dari kegiatan wisuda di Universitas Pelita Harapan.

PERANCANGAN SISTEM INFORMASI MANAJEMEN DAN REGISTRASI DATA WINISUDA BERBASIS WEB DAN MOBILE DI UNIVERSITAS PELITA HARAPAN Mouw, Christ Wibowo; Hery, Hery; Haryani, Calandra Alencia; Widjaja, Andree E.; Tarigan, Riswan E.
Proceeding National Conference Business, Management, and Accounting (NCBMA) 7th National Conference Business, Management, and Accounting
Publisher : Faculty of Economics and Business Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Sebagai Institusi Pendidikan, UPH melihat peranan teknologi sebagai aspek pendukung yang penting dalam melangsungkan aktivitas rutin proses pendidikan. UPH membutuhkan sistem informasi yang dapat mengelola informasi dengan baik dan efektif, disetiap departemen yang ada. Student Life merupakan salah satu departemen di UPH yang bertanggung jawab untuk setiap kegiatan kemahasiswaan yang berlangsung di UPH. Student Life memiliki 3 divisi yaitu Student Services, Student Stewardship, dan Spiritual Growth for Student. Divisi Student Stewardship memiliki bagian fokus nya masing-masing, salah satunya bertanggung jawab serta melangsungkan wisuda di UPH. Selama melaksanakan proses registrasi, panitia wisuda menggunakan Microsoft Excel untuk keperluan registrasi dan pengolahan data. Panitia wisuda perlu menyesuaikan data Microsoft Excel yang diberikan oleh ADAK untuk mendapatkan gambaran seberapa banyak data winisudawan yang akan diwisudakan. Sistem akan dirancang berbasis web untuk sisi admin dan mobile untuk sisi user. Hasil dari penelitian ini merupakan sistem yang berfungsi untuk mendukung proses kegiatan wisuda di Universitas Pelita Harapan secara efisien. Penelitian ini dibuat dengan tujuan untuk membantu proses sistem registrasi dan manajemen data winisuda bagi divisi Student Stewardship untuk menunjang perkembangan dari kegiatan wisuda di Universitas Pelita Harapan.

INNOVATIVE KNOWLEDGE MANAGEMENT STRATEGIES TRANSFORMING ORGANIZATIONAL SUCCESS Wijaya, Yoana Sonia; Haryani, Calandra A.; Hery, Hery; Widjaja, Andree E.; Tarigan, Riswan E.
Proceeding National Conference Business, Management, and Accounting (NCBMA) 7th National Conference Business, Management, and Accounting
Publisher : Faculty of Economics and Business Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar

In the current information technology era, knowledge management plays a critical role in the growth and success of enterprises. Knowledge management techniques are not used in the same manner as previously due to advancements in technology. Current knowledge management practices can benefit greatly from the application of emerging technological trends like web 2.0, social networks, wikis and blogs, discussion forums, and artificial intelligence. This will increase organizational performance and efficiency. The purpose of this study is to investigate the growing influence of knowledge management techniques on organizational effectiveness. This study examines earlier research on the subject of how organizational performance is impacted by emerging trends in knowledge management strategies. The literature review approach, or literature study from earlier research publications linked to this topic, was the research method used in this study. The research findings are presented in the form of a model, which suggests that increasing organizational performance and competitiveness is positively and significantly correlated with the introduction of new trends in knowledge management methods. Organizations can increase their performance and competitiveness in a market that is becoming more and more competitive by implementing effective knowledge management methods, according to the implications of this research.

Impulse buying behavior in mobile commerce: a partial least squares structural equation modeling analysis Hery, Hery; Veronica, Winnie; Widjaja, Andree E.; Haryani, Calandra Alencia; Tarigan, Riswan E.
International Journal of Advances in Applied Sciences Vol 14, No 3: September 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v14.i3.pp761-772

Efficient online transactions now thrive through websites (e-commerce) and mobile apps (m-commerce). With the growth of m-commerce, marketers aim to boost profits by understanding impulsive buying behavior. This study investigates factors influencing online impulse buying (OIB) in m-commerce by analyzing key variables. Data were gathered via questionnaires from 449 Indonesian consumers who had made digital payments and impulsive purchases using smartphones. The framework includes sales promotion (SP), attractive advertising (EA), and mobile digital payment systems (MDPS) as situational factors; hedonic shopping motivation (HSM) as a motivational factor; and impulsiveness (I) and smartphone addiction (SA) as personal traits. Analysis used partial least squares structural equation modeling (PLS-SEM), with gender, income, and smartphone usage time as control variables. Results show that EA, MDPS, HSM, I, and SA significantly influence OIB, while SP does not. For consumer segmentation, t-distributed stochastic neighbor embedding (t-SNE) outperformed ISOmap and principal component analysis (PCA), achieving a silhouette score of 0.72. A paired t-test (p<0.01) confirmed t-SNE’s superior clustering accuracy. These findings reveal that t-SNE better captures consumer segmentation patterns, helping businesses refine marketing strategies and deepen their understanding of psychological drivers behind impulsive m-commerce purchases.

A Quantitative Study on User Experience Dimensions and Their Impact on User Satisfaction in Indonesian Mobile E-Commerce Saputra, Afif Dwi; Tarigan, Riswan E.; Wijaya, Yoana Sonia
International Journal of Informatics and Information Systems Vol 7, No 3: September 2024
Publisher : International Journal of Informatics and Information Systems

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47738/ijiis.v7i3.217

This research examines how user experience (UX) dimensions influence user satisfaction in Indonesia’s mobile e-commerce ecosystem. As mobile shopping continues to dominate digital transactions, understanding the relationship between UX and user satisfaction becomes crucial for maintaining platform competitiveness. Adopting a quantitative explanatory approach, the study gathered data from 100 active users of leading e-commerce platforms such as Shopee, Tokopedia, and Lazada through an online questionnaire. The instrument was based on the User Experience Questionnaire (UEQ) framework, encompassing six dimensions—Attractiveness, Perspicuity, Efficiency, Dependability, Stimulation, and Novelty—with user satisfaction serving as the dependent variable measured via validated Likert-scale indicators. Analytical procedures included descriptive analysis, reliability and validity tests, and multiple linear regression using SPSS version 26. The findings reveal that five out of six UX dimensions significantly and positively affect user satisfaction (p 0.05). Among them, Perspicuity and Efficiency exert the strongest influence, underscoring the importance of intuitive interface design and smooth, error-free transaction processes. Dependability, Attractiveness, and Stimulation also play notable roles, indicating that both functional performance and emotional engagement contribute to favorable user experiences. Conversely, Novelty—though positively associated—does not reach statistical significance, implying that while users appreciate innovation, they prioritize clarity and reliability. The regression model yields an R² value of 0.742, suggesting that UX dimensions collectively account for 74.2% of the variance in user satisfaction. Overall, the study affirms that UX is a decisive factor in shaping user satisfaction and loyalty in mobile e-commerce environments. It enriches existing UX scholarship by providing empirical evidence from Indonesia’s fast-growing digital market. Practically, the results encourage developers to emphasize usability, dependability, and aesthetic design to maintain user engagement. Future studies are recommended to integrate trust, emotional attachment, and emerging technologies such as artificial intelligence and augmented reality to obtain a more comprehensive understanding of user satisfaction in digital commerce.

Title

Found 7 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 7 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 7 Documents
Search