Ulum, D. S. N. ., and A. S. . Girsang. “Hyperparameter Optimization of Long-Short Term Memory Using Symbiotic Organism Search for Stock Prediction”. International Journal of Innovative Research and Scientific Studies, vol. 5, no. 2, Apr. 2022, pp. 121-33, doi:10.53894/ijirss.v5i2.415.