GRG-HW and GRG-D Optimization Models for Rainfall Forecasting in the Yom River Basin

This Excel file provides a working example of the GRG-HW and GRG-D optimization methods applied to monthly rainfall data in the Yom River Basin, Thailand. It includes input datasets, model configuration, and parameter constraints for implementation in Microsoft Excel Solver. This file is intended to support reproducibility and methodological transparency of the forecasting models presented in this study.<b>Citation: </b><br>Minsan, P.; Minsan, W.; Forecasting rainfall in the Ping, Wang, Yom, and Nan River Basins of Thailand using decomposition and holt-winters methods enhanced by GRG nonlinear optimization. ASEAN J. Sci. Tech. Report. 2025, 28(5), e259297.<br>