²é¿´: 727  |  »Ø¸´: 6
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

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
Õâ¸öÊÇʲô×÷Óá£ÎªÊ²Ã´ÊäÈë²ÎÊýСÓÚ2¸öµÄʱºò¡£kind¾ÍµÈÓÚ2ÄØ£¿£¿£¿

[ À´×Ô¿ÆÑмÒ×å ÃÎÀïµÄÃÞ»¨ÌÇ ]
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ËêÔ²»¾Ó£¬ÌìµÀ³êÇÚ¡£
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

huzhyi21

гæ (ÕýʽдÊÖ)

¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
sxiaodong: »ØÌûÖö¥ 2013-03-22 18:31:12
ËûÕâ¸öº¯Êý£¬ÓÐÁ½¸öNormalized·½·¨£¬Ò»¸öÊÇ×î´ó×îС¹éÒ»»¯£¨kind=1£©£¬ ÁíÒ»¸öÊÇÕýÔò»¯£¨kind=2£©
mapminmaxº¯ÊýÖ»ÊÇ×î´ó×îС¹éÒ»»¯£¬Ã»ÓÐÕýÔò»¯¹¦ÄÜ¡£

º¯Êý²ÎÊýÖÐkindÓÃÀ´Ö¸Ã÷Ï£ÍûÊÇÄÄÖÖÔ¤´¦Àí·½·¨£¬ Èç¹ûÄã²»ÊäÈ루Ҳ¾ÍÊÇÊäÈë²ÎÊýСÓÚ2£¨µ±È»£¬ËûÓ¦¸ÃÔÙÏÞÖÆÏ£¬µÈÓÚ1£©£¬ ĬÈÏÔ¤´¦Àí·½·¨ÊÇÄÄÒ»ÖÖ¡£
6Â¥2013-03-22 18:20:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 7 ¸ö»Ø´ð

sxiaodong

½ð³æ (СÓÐÃûÆø)

×Ô¼º¶¥Ò»Ï¡£¡£¡£
ËêÔ²»¾Ó£¬ÌìµÀ³êÇÚ¡£
2Â¥2013-03-22 10:44:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sxiaodong

½ð³æ (СÓÐÃûÆø)

»¶Ó­SVM¹ã´óͬÈÊÄÜ»¥ÏàÌÖÂÛÒ»ÏÂ
ËêÔ²»¾Ó£¬ÌìµÀ³êÇÚ¡£
3Â¥2013-03-22 10:44:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sxiaodong

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by yang452 at 2013-03-22 16:21:44
¿´²»¶®

ºóÃæµÄºÃ¿´ ¾ÍÊǰÑÊý¾Ý¹æ·¶»¯µ½¡¾0£¬1¡¿ ¡¾1£¬2¡¿¡£¾ÍÊÇ×îÇ°ÃæµÄÄǼ¸¶Î´úÂë ÍêȫûŪ¶®
ËêÔ²»¾Ó£¬ÌìµÀ³êÇÚ¡£
5Â¥2013-03-22 16:57:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +5 ÁÖ֮Ϧ 2026-03-24 5/250 2026-03-24 17:16 by dick_runner
[¿¼ÑÐ] 070300»¯Ñ§Çóµ÷¼Á +9 Ô·¶¹¶¹ 2026-03-20 9/450 2026-03-24 17:15 by licg0208
[¿¼ÑÐ] 289Çóµ÷¼Á +5 ˶ÐǸ° 2026-03-23 5/250 2026-03-24 17:09 by helloÆßÆß
[¿¼ÑÐ] 292Çóµ÷¼Á +4 ¶ì¶ì¶ì¶î¶î¶î¶î¶ 2026-03-24 4/200 2026-03-24 16:41 by peike
[¿¼ÑÐ] 299Çóµ÷¼Á +7 ijijijijλ 2026-03-21 7/350 2026-03-24 15:24 by cuifj
[¿¼ÑÐ] Ò»Ö¾Ô¸¹þ¹¤´ó£¬085400£¬320£¬Çóµ÷¼Á +3 gdlf9999 2026-03-24 3/150 2026-03-24 10:08 by ²«»÷518
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á +7 A-¶ßÀ²ZÃÎ 2026-03-23 12/600 2026-03-23 23:16 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 280·ÖÇóµ÷¼Á Ò»Ö¾Ô¸085802 +4 PUMPT 2026-03-22 7/350 2026-03-22 22:13 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 298Çóµ÷¼ÁÒ»Ö¾Ô¸211 +3 Éϰ¶6666@ 2026-03-20 3/150 2026-03-22 15:50 by ColorlessPI
[¿¼ÑÐ] ÉúÎïѧµ÷¼Á +5 Surekei 2026-03-21 5/250 2026-03-22 14:39 by tcx007
[¿¼ÑÐ] 269ר˶Çóµ÷¼Á +6 ½ð¶÷±´ 2026-03-21 6/300 2026-03-22 14:31 by ColorlessPI
[¿¼ÑÐ] 280Çóµ÷¼Á +11 ¹¾ààÏþÏþ 2026-03-18 12/600 2026-03-21 22:40 by ACS Nano¡ª¡ª
[¿¼ÑÐ] 308Çóµ÷¼Á +3 °¢½ã°¢½ã¼Ò°¡ 2026-03-18 3/150 2026-03-20 23:24 by JourneyLucky
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤ 322Çóµ÷¼Á +4 È»11 2026-03-19 4/200 2026-03-20 22:12 by luoyongfeng
[¿¼ÑÐ] Çóµ÷¼ÁÒ»Ö¾Ô¸ÄϾ©º½¿Õº½Ìì´óѧ289·Ö +3 @taotao 2026-03-19 3/150 2026-03-20 21:34 by JourneyLucky
[¿¼ÑÐ] AÇøÏß²ÄÁÏѧµ÷¼Á +5 ÖÜÖÜÎÞ¼« 2026-03-20 5/250 2026-03-20 21:33 by laoshidan
[¿¼ÑÐ] 0817 »¯Ñ§¹¤³Ì 299·ÖÇóµ÷¼Á ÓпÆÑо­Àú ÓжþÇøÎÄÕ +22 rare12345 2026-03-18 22/1100 2026-03-20 20:39 by zhukairuo
[¿¼ÑÐ] 288Çóµ÷¼Á£¬Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ071005 +5 ioodiiij 2026-03-17 5/250 2026-03-19 18:22 by zcl123
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +5 pupcoco 2026-03-17 8/400 2026-03-19 13:58 by houyaoxu
[¿¼²©] 26²©Ê¿ÉêÇë +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by ÇáËɲ»ÉÙËæ
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û