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OPTIMAL METHOD FOR GM(1,1) MODELING FOR PREDICTION OF DEFORMATION TAKING COMPENSATION FOR MODEL ERRORS INTO ACOUNT

Gao Ning1,2),Cui Ximin1) and Gao Caiyun2) 1)College of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 1000832)Faculty of Survey & Spatial Information Engineering,Henan University of Urban Construction,Pingdingshan 467036  
By analyzing the main error source in the GM(1,1) modeling,the GM(1,1) model taking the compensation for model error was proposed and then,through an example,compared the model(with compensation for error) with the results predicted with conventional models GM(1,1),PGM(1,1) and time-varying GM(1,1).The results show that the prediction accuracy with the model GM(1,1) of error compensation is the highest.
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