Combined Prediction Model for Subsidence of Metro Construction Unit
Wei Lai · Geomatics & Spatial Information Technology · 2013
Considering the subsidence's random fluctuation at the metro construction unit,a combination prediction model is provided. By using wavelet decomposition and reconstruction,the non-stationary time series can be decomposed into smoothing and detail components. The smoothing components can be predicted by grey model,and detail components can be predicted by markov model.The prediction is the combination of the respective prediction. The combination model can fit the smoothing components better,and avoid the fitting of the details components excessively. The result acquired from the example shows that the model has high prediction accuracy.