Parulian Josaphat, Bony, and Dhevri Leonardo Hutajulu. “Forecasting Composite Stock Price Index on Indonesia Stock Exchange Using Extreme Learning Machine”. Proceedings of The International Conference on Data Science and Official Statistics 2025, no. 1 (December 22, 2025): 51–63. Accessed December 27, 2025. https://proceedings.stis.ac.id/icdsos/article/view/496.