Ulinuha, S.; Wahyu Utami, T.; Arum, P. R.; Purwanto, D. Comparison of Holt-Winters Exponential Smoothing (HWES) and Singular Spectrum Analysis (SSA) Methods in Forecasting the Number of Passengers at PT KAI in Indonesia: Perbandingan Metode Holt-Winters Exponential Smoothing (HWES) Dan Singular Spectrum Analysis (SSA) Pada Peramalan Jumlah Penumpang PT KAI Di Indonesia. jodi 2024, 2, 44-60.