Journal of Innovation Information Technology and Application (JINITA)
Vol 7 No 2 (2025): JINITA, December 2025

Gold Price Forecasting using Time Series Modeling on a Web Platform

Dwi Ratna Puspita Sari (Politeknik Negeri Semarang)
Sirli Fahriah (Politeknik Negeri Semarang)
Kurnianingsih (Politeknik Negeri Semarang)
Santi Purwaningrum (Politeknik Negeri Cilacap)



Article Info

Publish Date
30 Dec 2025

Abstract

Gold is one of the most favored investment instruments due to its stability and its ability to preserve value against inflation. However, its price movements are volatile and influenced by various global economic factors, currency exchange rates, and geopolitical conditions, making gold price forecasting a significant challenge. This study aims to develop a gold price forecasting system using the Long Short-Term Memory (LSTM) algorithm, a variant of the Recurrent Neural Network (RNN) that excels in processing time-series data. The dataset consists of historical daily gold buying and selling prices from 2015 to 2025, collected from Yahoo Finance, Logam Mulia, and the official website of Bank Indonesia. The modeling process follows the CRISP-DM methodology, which includes business understanding, data preparation and exploration, modeling, and evaluation stages. Time Series Cross Validation (TSCV) is used to validate the model. LSTM performance is compared with other models such as GRU, CNN-1D, and Simple RNN to identify the best-performing architecture. Evaluation results indicate that LSTM achieved the highest performance with an R² score of 0.99 for selling prices and 0.98 for buying prices on the final test dataset. The system is deployed online, making it accessible in real-time. This research is expected to assist investors, financial analysts, and the general public in making smarter investment decisions based on valid historical data and advanced forecasting technology.

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Journal Info

Abbrev

jinita

Publisher

Subject

Computer Science & IT Decision Sciences, Operations Research & Management Engineering

Description

Software Engineering, Mobile Technology and Applications, Robotics, Database System, Information Engineering, Interactive Multimedia, Computer Networking, Information System, Computer Architecture, Embedded System, Computer Security, Digital Forensic Human-Computer Interaction, Virtual/Augmented ...