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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 Õâ¸öÊÇʲô×÷Óá£ÎªÊ²Ã´ÊäÈë²ÎÊýСÓÚ2¸öµÄʱºò¡£kind¾ÍµÈÓÚ2ÄØ£¿£¿£¿ [ À´×Ô¿ÆÑмÒ×å ÃÎÀïµÄÃÞ»¨ÌÇ ] |
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sxiaodong
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7Â¥2013-03-22 18:31:03
sxiaodong
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2Â¥2013-03-22 10:44:08
sxiaodong
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3Â¥2013-03-22 10:44:30
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5Â¥2013-03-22 16:57:32













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