群分析的相似性统计量

群分析的相似性统计量

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveGeoinformation analysis
Method-focused categoriesData-perspectiveGeostatistical analysis
Method-focused categoriesProcess-perspectivePhysical process calculation

Model Description

Chinese {{currentDetailLanguage}} Chinese

群分析的相似性统计量

(1)距离系数:

                

式中,di,k为第i个于第k个样本在V维空间中的距离;xi,j为第i个样本第j个变量的观测值;N为样本数;V为变量数。

(2)相似系数:

式中,cosθ为相似系数;i,p=1,2,···N为被比较的两个样本,N为样本总数;x为样本的观测值;cosθ选取最大者优先合并。

(3)相关系数:

式中,j,k=1,2,···N为被比较的两个样本,N为样本总数;x为样本的观测值;r的取值范围是0<=r<=1,r选取最大者优先合并。

4)样本数据标准化:

               

式中,i=1,2,···N为样本数;j=1,2,···v为变量数;x(-)j为第j个变量的平均值;Sj为第j个变量的标准差;xij为原始数据。

5)样本数据正规化:

                       

司有元:丹江口水库汛期降水的环流特性。地理研究,1982,1(4)

 

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How to Cite

《资源环境数学模型手册》 (2018). 群分析的相似性统计量, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/af0c415d-baa3-46b7-9d11-34ca7d789011
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Last modifier : 
Zhiyi Zhu
Last modify time : 
2020-11-14
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Contributor(s)

initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
Zhiyi Zhu
Last modify time : 
2020-11-14
Modify times : 
View History

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