JSIKTI: Journal of Information Systems and Applied Computer Technology Indonesia, Volume 5, Number 4 (June 2023) presents a collection of research articles focusing on innovative applications of information systems, machine learning, and data analysis. This edition features collaborative works from three institutions — Institut Bisnis dan Teknologi Indonesia (INSTIKI), Okayama University (Japan), and Politeknik Pertanian Negeri Samarinda (Indonesia) — highlighting the journal’s commitment to fostering interdisciplinary research and international academic collaboration.

The articles in this issue explore a range of topics including decision support systems for tourism selection using GDSS and Borda methods, Bitcoin price trend analysis using KNN, machine learning-based prediction models such as Random Forest for health and education data, and time-series forecasting using the Prophet algorithm. Together, these studies demonstrate practical implementations of computational intelligence and data-driven decision-making across diverse domains.

This issue reflects the journal’s vision to serve as a platform for sharing applied computer science innovations and promoting research synergy between academia and industry in Indonesia and beyond.