custom distance with the kmeans

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majeed 2022-11-7

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https://ww2.mathworks.cn/matlabcentral/answers/1845553-custom-distance-with-the-kmeans

评论： majeed 2022-11-8

hi ,

i wanna use this equation to comput distance detween each data and two centroid ( let data (x1,x2) and first centroid (c1,c2) and second centroid (c3,c4)

abs((x1-c1)/std(x1))+abs((x2-c2)/std(x1)) this between the data and first centroid

abs((x1-c3)/std(x2))+abs((x2-c4)/std(x2)) this between the data and second centroid

then choice the shortest ( this in kmeans function )

thanks

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回答（1 个）

David Hill 2022-11-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1845553-custom-distance-with-the-kmeans#answer_1093433

在 MATLAB Online 中打开

data=randi(100,10,2);
centroid1=randi(100,1,2);
centroid2=randi(100,1,2);
m=sum(abs((data-centroid1)./std(data(:,1))),2);
n=sum(abs((data-centroid2)./std(data(:,2))),2);
km=min(m,n)
km = 10×1
    0.5618
    2.5094
    0.7151
    0.1873
    1.0936
    2.3971
    2.4720
    1.6854
    1.5731
    1.2619