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sxiaodong

½ð³æ (СÓÐÃûÆø)

[½»Á÷] SVM ÒÑÓÐ2È˲ÎÓë

function normal = normalization(x,kind)
% by Li Yang BNU MATH Email:farutoliyang@gmail.com QQ:516667408
% last modified 2009.2.24
%ÓÃÓÚÊý¾Ý¹æ·¶»¯  ¼°mapminmaxµÄ¹¦ÄÜ

if nargin < 2
    kind = 2;%kind = 1 or 2 ±íʾµÚÒ»Àà»òµÚ¶þÀà¹æ·¶»¯
end

[m,n]  = size(x);
normal = zeros(m,n);
%% normalize the data x to [0,1]
if kind == 1  
    for i = 1:m
        ma = max( x(i, );
        mi = min( x(i, );
        normal(i, = ( x(i,-mi )./( ma-mi );
    end
end
%% normalize the data x to [-1,1]
if kind == 2
    for i = 1:m
        mea = mean( x(i, );
        va = var( x(i, );
        normal(i, = ( x(i,-mea )/va;
    end
end
Õâ¸öÊÇnormalizationº¯Êý Ò²¾ÍÊÇʵÏÖmapminmaxÒ»Ñù¹¦Äܵĺ¯Êý¡£µ«ÎÒû¿´¶® if nargin < 2
    kind = 2;%kind = 1 or 2 ±íʾµÚÒ»Àà»òµÚ¶þÀà¹æ·¶»¯
end
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yang452

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sxiaodong

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by yang452 at 2013-03-22 16:21:44
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sxiaodong

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ÒýÓûØÌû:
6Â¥: Originally posted by huzhyi21 at 2013-03-22 18:20:55
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