昆明冶金高等专科学校学报
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摘要: :以采空区沉降监测为研究对象,通过采用灰色系统理论中灰色模型GM (1,1) 和加权灰色模型PGM(1,1)对监测数据进行建模和分析。相对误差绝对值均值最小和误差绝对值之和最小法2种不同的加权方案,体现了各监测值对模型的贡献率,较传统的等权模式更体现时效性。结合工程实例,验证了用灰色理论模型进行数据处理及分析采空区沉降监测数据的可行性和可靠性。尤其是相对误差绝对值均值最小法,无论从拟合精度还是短期预测,PGM (1,1)均优于GM (1,1)模型,其应用值得研究。
关键词: 灰色模型, 加权灰色模型, 拟合, 预测, 精度
Abstract: Withsubsidencemonitoringofthegoafastheresearchobject,themonitoringdataweremodeledandanalyzedbyusinggreymodelGM (1,1)andweightedgreymodelPGM (1,1)inthegreysystemtheory.Twoifferentweightingschemes,namely,thatadoptingtheminimummeanvalueofrelativeerrorabsolutevalueandthatingtheminimummeanvalueofthesumoftheabsolutevalueoftheerror,reflectthecontributionrateofeachmonitoringvaluetothemodel,whichismoretimelinessthanthetraditionalequalweightmodel.Combinedwithengineeringexamples,thefeasibilityandreliabilityofdataprocessingandanalysisofsettlementmonitoringdataingoafusingthegreytheoreticalmodelwereverified.Inparticular,intherelativeerrorabsolutemeanminimummethod,whetherfromthefittingaccuracyorshort-termprediction,PGM(1,1)isbetterthanGM(1,1)model,anditsapplicationisworthstudying.
Key words: greymodel(GM), weightedgreymodel-PGM (1, 1), fiting;prediction, accuracy
中图分类号:
P25
王建英1,黄德武2. 加权灰色模型在采空区沉降监测中的应用及对比分析[J]. 昆明冶金高等专科学校学报, DOI: doi:10.3969/j.issn.1009-0479.2018.05.005 .
WANGJianying1,HUANGDewu2. ApplicationandComparativeAnalysisoftheWeightedGreyModelinGoafSubsidenceMonitoring[J]. JOURNAL OF KUNMING METALLURGY COLLEGE, DOI: doi:10.3969/j.issn.1009-0479.2018.05.005 .
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链接本文: http://kmyzxb.magtech.com.cn/CN/doi:10.3969/j.issn.1009-0479.2018.05.005
http://kmyzxb.magtech.com.cn/CN/Y2018/V34/I5/23