The structure method of background value in grey system GM(1,1) model is considered to have an important influence on the adaptability and precision of GM(1,1) model.
灰色GM（1，1）模型中的背景值构造法是影响模型适应性和精度的关键因素。
The structure method of background value in grey system GM(1,1) model is considered to have an important influence on the adaptability and precision of GM(1,1) model.
灰色GM（1，1）模型中的背景值构造法是影响模型适应性和精度的关键因素。
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