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具有幂指数律重合性的GM(1,1)幂模型

, PP. 1843-1848

Keywords: 灰色系统,GM(1,1),幂模型,幂指数律重合性,预测

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Abstract:

针对传统GM(1,1)幂模型不具备幂指数律重合性的问题,分别从灰导数和背景值两个方面改进GM(1,1)幂模型的灰色微分方程,提出了两种具有幂指数律重合性的GM(1,1)幂模型并从理论上加以证明.通过变换将两个具有幂指数律的灰色微分方程转化成完全一致的形式,在此基础上进行参数估计.数值模拟和应用实例表明,具有幂指数律重合性的GM(1,1)幂模型能够有效地提高模型的模拟和预测精度.

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