基于指数三角函数的灰色预测模型研究与应用  

The Research and Application of Grey Forecasting Model Base on Eponential & Triangle Function

作　　者：林耀进[1] 王晨曦[2] 

机构地区：[1]漳州师范学院计算机科学与工程系,福建漳州363000 [2]漳州职业技术学院计算机工程系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2009年第2期32-36,共5页Journal of ZhangZhou Teachers College（Natural Science)

基　　金：漳州师范学院科研基金资助项目(SK08004)

摘　　要：基于函数变换理论,提出了对建模数据进行acos(x)(a>1)变换,理论上证明了这种变换可以有效地提高建模数据序列的光滑度.拓广了灰色模型的应用范围,实例验证了所建GM(1,1)模型精度优于"对数幂函数"法所建模型,说明了该方法的有效性.Based on function transformation theory, he method of a^cos（x）（a〉1）transformation against modeling data is putted lbrward. It has been proved that the smooth degree of modeling sequence after this transformation can be enhanced. Which turns out to be more effective than the method of logarithm ＆ power function. So the method can widen the range of application of grey modeling. Example verification indicates the practical result shows the effectiveness the proposed approach.

关 键 词：灰色模型 函数变换 光滑度 精度 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]