一种新的灰色无偏GM(1,1)模型建模方法

A New Modeling Method of an Unbiased GM(1,1)

通过分析GM (1,1)白化方程的解析表达式 ,建立了无偏的GM (1,1)模型 ,给出了估计模型参数的新方法。该模型具有白指数律重合性 ,它突破了a较大时GM (1,1)模型不能应用的禁区 。

By analysing the differential equation of GM(1,1),this paper gives an unbiased GM(1,1) model and proposes a new method of estimation of the GM(1,1)model parameters.It possesses white exponential law coincidence property.The restricted zone of using GM(1,1) is broken while ais a bigger number and improves the GM(1,1) model's practical applicability and precision.