D. . Aldo, M. R. . Firmansyah, and M. A. . Amrustian, “Comparative Analysis of Hyperparameter Optimization Methods for LSTM in Cryptocurrency Price Prediction: An Application to TRX–USD”, J. Tek. Inform. (JUTIF), vol. 7, no. 3, pp. 2340–2349, Jun. 2026.