| Kriging算法在含水量三维属性模型构建中的应用研究* |
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| 引用本文： | 姚凌青,潘懋,屈红刚,兰向荣,丛威青,刘学清,于春林.Kriging算法在含水量三维属性模型构建中的应用研究*[J].计算机应用研究,2008,25(8):2554-2556. |
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| 作者姓名： | 姚凌青 潘懋 屈红刚 兰向荣 丛威青 刘学清 于春林 |
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| 作者单位： | 1. 北京大学,造山带与地壳演化教育部重点实验室,北京,100871
2. 北京市地质矿产勘查开发局,北京,100050 |
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| 基金项目： | 北京市多参数立体地质调查项目（200313000045） |
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| 摘 要： | Kriging算法通过构造区域化变量的变异模型，并据此求取未知数据的最优线性无偏估计量。结合构建工程地质体含水量参数三维模型的应用，强调在三维环境下分析样本的空间变异结构特征，以KD树建立样本数据的空间索引快速搜索插值邻域。针对插值过程中存在的负权值问题，采用线性规划的方法加以解决。研究表明，该算法综合考虑了各向异性以及不同变异尺度对算法的影响，比基于分层的二维Kriging方法更为合理。
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| 关 键 词： | Kriging算法 各向异性 变异尺度 负权值 KD树 线性规划 含水量 |
Research on application of Kriging in construction of three dimensional property model about water content |
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| YAO Ling qing,PAN Mao,QU Hong gang,LAN Xiang rong,CONG Wei qing,LIU Xue qing,YU Chun lin.Research on application of Kriging in construction of three dimensional property model about water content[J].Application Research of Computers,2008,25(8):2554-2556. |
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| Authors: | YAO Ling qing PAN Mao QU Hong gang LAN Xiang rong CONG Wei qing LIU Xue qing YU Chun lin |
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| Affiliation: | YAO Ling-qing1,PAN Mao1,QU Hong-gang1,LAN Xiangrong1,CONG Wei-qing1,LIU Xue-qing2,YU Chun-lin2 |
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| Abstract: | Kriging algorithm builds varation model of regional variables and through which seeks for best linear unbiased estimator(BLUE) of unknown property.This paper combined with application of constructing 3D property model of water content within a certain engineering geological body,emphasized analyzing variation of regional variable under 3D circumstance,and adopted K-D tree to acquire neighborhoods quickly.Resolved negative weights during interpolation by linear program.The results show that 3D Kriging behaves better than 2D Kriging based on dividing layer for consideration of anisotropy and different scales on variation model. |
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| Keywords: | Kriging algorithm anisotropy variation scale negative weight K-D tree linear program water content |
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