摘要
通过研究数乘变换对GM(1,1)幂模型的幂指数和参数特征以及其误差的影响程度,揭示了GM(1,1)幂模型的幂指数和其误差在原始特征序列经过数乘变换前后的变化规律。结果表明:GM(1,1)幂模型的幂指数及建模精度与原始特征序列进行数乘变换无关,同时利用数乘变换可以降低建模数据的量级,简化其建模过程的复杂性。
By studying the power exponent and the parameter characteristics of GM(1,1)power model and explaining its effect on simulated value and predicted value under multiply transformation,this paper reveals the change rule of the modeling accuracy of GM(1,1)power model with multiply transformation acting on the raw sequences.The results show that the modeling accuracy of GM(1,1)power model must be independent of the multiply transformation acting on the raw sequences.The multiply transformation acting on the raw sequences can reduce the magnitude of the data and simplify the complexity of the modeling process.
出处
《系统工程》
CSSCI
CSCD
北大核心
2014年第12期150-152,共3页
Systems Engineering
基金
四川省应用基础研究项目(2008JY0112)
四川省高等教育人才培养质量和教学改革项目(P09264)
四川省留学人员科技活动择优项目(川人社函2010年32号)
