摘要
建筑地基的沉降观测一般是时间非等间距的;分析了基于灰色理论建立的非等间隔数据GM(1,1)模型进行预测所得出的结果的误差变化,得出需要进行预测的后续时间越长,误差就越大;用越久远的数据建立的非等间隔数据GM(1,1)模型进行预测,所得出的相同后续时间的结果误差越大;运用灰色系统理论建立模型群,进而对模型群进行了优化,建立了非等间隔数据GM(1,1)模型群的优化预测模型。
The data of foundation settlement commonly are of the unequal time-interval. According to the unequal time-interval GM（ 1,1 ） model, there are the conclusions that the error of the forecasting results is greater with the forecasting time going on and the error of the forecasting results is greater according to the grey model established with the data longer before found. According to the grey theory, the grey model groups are established,and then the optimization forecasting model is established after these GM（1,1 ） groups optimized.
出处
《建筑科学》
北大核心
2006年第1期19-22,共4页
Building Science
关键词
非等间隔
灰色理论
优化预测
模型群
unequal time-interval
grey theory
optimization forecasting model
model groups
