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《Engineering of Surveying and Mapping》 2006-03
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Study of unequal-step GM(1,1)model and its application

LIU Ming-bo~(1,2) TIAN Lin-ya~3 SUN He-ping~1 (1.Institute of Geodesy & Geophysics,Chinese Academy of Science,Wuhan 430077,China; 2.Graduate School of Chinese Academy of Science,Beijing 100049,China; 3.College of Civil Engineering,Hehai University,Nanjing 210098,China)  
For the unequal-step data,the traditional GM method is to establish the equal-step GM(1,1)model by constructing equal-step sequence and making 1-AGO sequence.Considering the unequal-step characteristic of de- formation monitoring sequence,the time interval is taken as weight and the 1-WAGO sequence directly made and the unequal-step GM(1,1)model established.The models is used to analyze and forecast the settlement ob- servation of embankment project,some useful conclusion is obtained.
【CateGory Index】: TU196
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