【摘要】 对灰色模型GM ( 1 ,1 )的缺陷进行了分析 ,引入新的预测模型GM ( 2 ) ,并将两种模型进行比较 ,对于变化幅度较大的序列 ,GM ( 2 )优于GM ( 1 ,1 ) ,这为实际应用提供了一种有效的预测方法。更多还原

【Abstract】 This paper analyses the defects of GM(1,1) and introduces a new forecasting model of GM(2). It compares the two models and finds that GM(1,1) is superior to GM(2) for the array that changes more quickly,which undoutedly provides a more practical forecasting method for application.更多还原