Ahmar, A.S. and Rahman, A. 2026. The Evaluation Problem in Cryptocurrency Price Forecasting with Machine Learning and Deep Learning: A Problem-Centric Systematic Review of 48 Studies (2018–2025) . Journal of Economics, Entrepreneurship, Management Business and Accounting. 4, 1 (Jan. 2026), 14–34. DOI:https://doi.org/10.61255/jeemba.v4i1.1307.