摘要
本文提出了一种变系数 GM(1,1)模型及其参数估计的方法.该模型不仅具有计算简单的特点,而且扩大了GM(1,1)模型的适应范围.实例表明,该模型具有较高的拟合精度.
In this paper,the conccpt of a king of GM(1,1) model with variable coefficicnts is pro- posed.Thc stages and the method of parameters estimation of the model are put stress on. The calculating volume of paramcters estimation of the model is small.And,the applicablc rangc in the GM(1,1) modcl is cxtcnod by the GM(1,1) model with variablc coefficicnts.A practical cxamplc shows that thc forecasting prccision of the GM(1,1) model with variable cocfficicnts is vcry good.
出处
《北京机械工业学院学报》
1995年第2期51-58,共8页
Journal of Beijing Institute of Machinery
基金
北京机械工业学院科研基金
关键词
参数估计
灰色预测模型
预测
GM(1,1)Modl with Variable Cofficients
Parameters Estimation
