Yollanda M, Devianto D, Permathasari P. Modeling of Indonesia Composite Index using Artificial Neural Network and Multivariate Adaptive Regression Spline (retracted). J. Mat. Mantik [Internet]. 2019 Oct. 27 [cited 2024 Apr. 20];5(2):112-2. Available from: https://jurnalsaintek.uinsby.ac.id/index.php/mantik/article/view/521