Sucipto, Christy Sheldy, Winita Sulandari, and Yuliana Susanti. 2025. “IMPLEMENTATION OF CROSS-VALIDATION ON HANG SENG INDEX FORECASTING USING HOLT’S EXPONENTIAL SMOOTHING AND AUTO-ARIMA METHOD”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan 19 (1), 13-24. https://doi.org/10.30598/barekengvol19iss1pp13-24.