GM(1,1)组合优化模型

Combination Type of GM(1,1)

从影响GM（1，1）模型产生误差的两个主要原因出发，重新选择灰导数，并基于Newton．Cote’s积分公式和相邻最近插值方法构造出GM（1，1）组合模型，提出了求该组合模型参数的计算方法，通过实例验证了组合模型的模拟精度，具有重要的应用价值。

Starting with two reasons of the error margin created by the GM （ 1,1 ） model, the grey derivative is re-selected, the GM（ 1,1 ） combination model is constructed based on Newton-cote＇ s integral calculus formula and close insert value method. A calculation method of the parameter of the combination model is put forward. The imitation accuracy is verified by actual exampies. It is of important application value.