城市燃气负荷灰色组合预测模型研究

根据组合预测理论,将基于灰色理论的3种预测模型,即基本灰色预测GM(1,1)模型、残差灰色预测模型和动态等维灰数递补预测模型结合起来,建立灰色组合预测模型,实例分析表明,该模型能克服单个模型方法的不足,提高预测精度。 According to the theories of combined forecasting,combined gray forecasting model is established,based on the three forecasting model:basic gray forecasting model GM(1,1),remnent differ gray forecasting model and dynamic equidimensional graynumber progressive complement model.The practice example show that combined gray forecasting model can overcome the disadvantages of individual model,raise the precision