Volume 37 Issue 3
Mar.  2012
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TAO Xiaojing, ZHU Jianjun, TIAN Yumiao. Analysis of Factors Influencing Smoothing Parameter in Semiparametric Model[J]. Geomatics and Information Science of Wuhan University, 2012, 37(3): 298-301.
Citation: TAO Xiaojing, ZHU Jianjun, TIAN Yumiao. Analysis of Factors Influencing Smoothing Parameter in Semiparametric Model[J]. Geomatics and Information Science of Wuhan University, 2012, 37(3): 298-301.
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Analysis of Factors Influencing Smoothing Parameter in Semiparametric Model

  • 1 School of Geosciences and Info-physics,Central South University,932 South Lushan Road,Changsha 410083,China;2 Key Laboratory of Precise Engineering Surveying & Deformation Hazard Monitoring,Universities of Hunan Province, 932 South Lushan Road,Changsha 410083,China

Funds: 国家自然科学基金资助项目(40974007);;湖南省教育厅基金资助项目(09K006)
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  • Received Date: December 14, 2011
  • Published Date: March 04, 2012
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    • Abstract
  • Many methods can be used to determine smoothing parameters in semiparametric model,but smoothing parameters vary with these methods for the same model.After comparative analysis of the L-Curve,GCV(Generalize Cross Validation) and virtual observational approach,the factors influencing smoothing parameter are studied by simulated example.Smoothing parameters have a close relation with signal-to-noise ratio.When the signal-to-noise ratio increases,variation trend of smoothing parameters is different.The best method determining smoothing parameters in different situations is different.
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