基于缓冲算子的GM(1,1)模型的预测精度

Prediction Accuracy of GM(1,1) Model Based on Buffer Operator

针对基坑变形趋势前后不一致及冲击扰动对预测值影响的情况,采用基于缓冲算子的GM(1,1)模型对基坑监测数据进行预测,并运用该模型对某建筑基坑沉降数据进行预测分析。实例分析表明,该模型不仅可以抵抗冲击扰动影响,还可对原始观测值赋予权重,以提高新信息的影响、减小旧信息的影响,从而有效提高了模型的预测精度。

With the the inconsistent situation of the foundation pit deformation trend,GM(1,1)model based onbuffer operator was used to predict the data of foundation pit in this paper.And the model was applied to predict andanalyze the settlement data of a building foundation pit.Case study showed that,the model can not only resist theimpact disturbance,but also weigh the original observations to improve the new information,reduce the impact ofinformation,and effectively improve the prediction accuracy of the model.