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利用GM(1,1)模型预测曲线波形    

Make use of the GM(1,1) Model Carries on Curve Wave Form Predicts

文献类型:期刊文献

中文题名:利用GM(1,1)模型预测曲线波形

英文题名:Make use of the GM(1,1) Model Carries on Curve Wave Form Predicts

作者:纪跃芝[1];张洪[2];刘新禄[2]

第一作者:纪跃芝

机构:[1]长春工业大学基础科学学院;[2]北京联合大学生物化学工程学院基础部

第一机构:长春工业大学基础科学学院,吉林长春130012

年份:2009

期号:8

起止页码:142-149

中文期刊名:数学的实践与认识

外文期刊名:Mathematics in Practice and Theory

收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD_E2011_2012】;

语种:中文

中文关键词:GM(1;1)模型;波形预测;残差修正GM(1;1)模型

外文关键词:GM(1, 1) mode; wave form estimate; the residual error correction GM(1,1)model

摘要:针对给出的函数y=f(x),x∈[a,b],将其值域进行n等分,设yi为其中任一分点,对应x=xi(i=1,2,…,m),用GM(1,1)模型对序列{x1,x2,…,xm}进行预测,得到曲线y=f(x)在下一段时间与直线y=yi的交点位置.当GM(1,1)模型的误差较大时,可利用带有残差修正的GM(1,1)模型进行残差修正,以提高GM(1,1)模型预测值的精确度.
Establish to have already given a function y = f(x) in the zone [a,b] picture, to divide its domain of value [c,d] into n parts, establish yi for among them a cent order, handing over the abscissa that it is curve y = f(x) with straight line y = yi of crossover point sit, use the GM (1,1) model to the sequence {x1,x2,…,xm} carry on the estimate, can get the curve y f(x) at under a period of time and straight line y = yi of crossover point position. At the same time at the error margin of the GM (1,1) model is bigger, also can make use of having the residual error correction GM(1,1) model to carry on residual error correction, thus can the accuracy of the GM(1,1) model raise at first.

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