Implementation of an Artificial Neural Network Based on the Backpropagation Algorithm in Forecasting the Closing Price of the Jakarta Composite Index (IHSG). ujsds [Internet]. 2024 Feb. 25 [cited 2026 Oct. 6];2(1):23-31. Available from: https://ujsds.ppj.unp.ac.id/index.php/ujsds/article/view/137