摘要
给出了时变参数PGM(1,1)模型的数值解法,比较了其与GM(1,1)、PGM(1,1)模型的预测精度,分析了灰区间作为预测结果的可靠性。
We provide a numerical method of the time-varying parameter PGM(1,1)model.We compare TPGM(1,1)model with GM(1,1)and PGM(1,1)model in prediction precision,and analyse the reliability of grey interval,which is considered as a result of prediction.
出处
《测绘信息与工程》
2010年第4期36-37,共2页
Journal of Geomatics
关键词
时变参数
PGM(1
1)模型
变形监测
灰区间
time-varying parameter
PGM(1
1)model
deformation monitoring
grey interval