Vol. 9 No. 1: January 2026

This issue available online on 1st January 2026 for the regular issue of January 2026. All articles in this issue (5 original research articles) were authored/co-authored by 10 authors from 2 countries (Indonesia and South Korea).

DOI: https://doi.org/10.47738/ijiis.v9i1

Published: 2026-01-25

Articles

Implementation of Artificial Intelligence to Improve Customer Service Efficiency at PT Jaya Harita Lestari

Axel Sandi Seno, Najmal Falah

234-241
- PDF
An Empirical Study on the Impact of Feature Scaling and Encoding Strategies on Machine Learning Regression Pipelines

Guevara Ananta Toer, Gwanpil Kim

242-256
- PDF
Identifying Key Psychological, Academic, and Environmental Determinants of Student Stress Using Regression-Based Machine Learning

Ahmad Saekhu, Eko Priyanto

257-269
- PDF
Forecasting Coffee Sales Using Time-Based Features and Machine Learning Models

Yoana Sonia Wijaya, Ariel Christopher Wawolangi

270-282
- PDF
Machine Learning-Based Fraud Detection in E-Commerce Transactions

Evelyn Evelyn, Adi Suryaputra Paramita

283-294
- PDF

e-ISSN	2579-7069
DOI	10.47738/ijiis
Website	ijiis.org/index.php/IJIIS
Frequency	Four issues per year
Contact	editor@ijiis.org

Vol. 9 No. 1: January 2026

Articles

Implementation of Artificial Intelligence to Improve Customer Service Efficiency at PT Jaya Harita Lestari

An Empirical Study on the Impact of Feature Scaling and Encoding Strategies on Machine Learning Regression Pipelines

Identifying Key Psychological, Academic, and Environmental Determinants of Student Stress Using Regression-Based Machine Learning

Forecasting Coffee Sales Using Time-Based Features and Machine Learning Models

Machine Learning-Based Fraud Detection in E-Commerce Transactions