摘要
根据各种应用实例的分析，指出对于同一原始序列来说，当计算零点升高、新序列的第二项减小或累加次数增多时，ＧＭ（１，１）模型的预测值增大，同时指出这些问题是由ＧＭ（１，１）模型本身的特点所决定的。
In accordance with analysis of various examples, this paper points out that so far as same primitive sequence is concerned, forecasting value of GM(1,1) enlarges when the calculating null point rises, and the second term of the new sequence decreases, and cumulative number increases. It is pointed out at the same time that these problems depend on the character of GM(1,1) itself.
出处
《系统工程理论与实践》
EI
CSCD
北大核心
1997年第12期125-128,137,共5页
Systems Engineering-Theory & Practice
关键词
GM(1
1)模型
预测值
灰色系统
灰色预测模型
grey model(1,1)
calculating null point
sequence length
cumulative number
forecasting value
