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½ð³æ (ÕýʽдÊÖ)


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qiusj

½ð³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
5Â¥: Originally posted by Nkxz at 2012-10-17 21:47:20
£¨1£©ÓÃopus°Ñÿ¸öÑùÆ·µÄ¹âÆ×Êý¾Ý¶Á³öÀ´£¬²¢´æÎªmatlab¸ñʽ£»
£¨2£©ÓÃÉÏÃæµÄ³ÌÐòÀ´½øÐÐk-s·Ö×é¡£

ÎÒÓõÄÊÇOPUS¸ñʽµÄͼÆ×Ôõô²ÅÊÇmatlab¸ñʽѽ£¬»¹ÊDz»»áѽ£¡Òª²»ÎÒ°ÑͼÆ×·¢¸øÄ㣬Äã°ïÎÒ´¦Àíһϣ¬°Ñ½á¹û¸æËßÎҾͿÉÒÔÁË£¬ÐÐÂð£¿
7Â¥2012-10-20 09:00:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 15 ¸ö»Ø´ð

Nkxz

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)


¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÓÃÏÂÃæµÄmatlab³ÌÐò¼´¿É¡£ÆäÖÐXÊÇÐèÒª±»·Ö×éµÄÑùÆ·µÄ½üºìÍâ¹âÆ×ÑùÆ·¼¯£¬kÊÇÐèҪѡ³öµÄÑùÆ·¸öÊý¡£



function [model,test]=kenstone(X,k)
tic
[m,n]=size(X);
if k>=m | k<=0  
    h=errordlg('Wrongly specified number of objects to be selected to model set.','Error');
    model=[];
    if nargout==2
        test=[];
    end
    waitfor(h)
    return
end

x=[[1:size(X,1)]' X];
n=size(x,2);
[i1,ind1]=min(fastdist(mean(x(:,2:n)),x(:,2:n)));
model(1)=x(ind1,1);
x(ind1,=[];

[i2,ind2]=max(fastdist(X(model(1),,x(:,2:n)));
model(2)=x(ind2,1);
x(ind2,=[];

%h=waitbar(0,'Please wait ...');
%h=waitbar(0/k,h);

for d=3:k
    [ii,ww]=max(min(fastdist(x(:,2:n),X(model,)));
        model(d)=x(ww,1);
        x(ww,=[];
%    h=waitbar(d/k,h);
end

if nargout==2
    test=1:size(X,1);
    test(model)=[];
end

%close(h);
toc

function D=fastdist(x,y)

% Calculated Euclideam distances between two sets of objetcs

D=((sum(y'.^2))'*ones(1,size(x,1)))+(ones(size(y,1),1)*(sum(x'.^2)))-2*(y*x');
2Â¥2012-10-16 15:35:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Nkxz

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)


¡ï ¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
leecius: ½ð±Ò+1, лл²ÎÓë¡£ 2012-10-18 09:05:10
²»ÖªµÀΪʲô»áÓÐЦÁ³³öÀ´£¬Õâ¸ö¿ÉÄÜÊǸöbug°É£¬ÎÒ´«µ½¸½¼þÉÏÁË£¬Äã×Ô¼º¿´°É¡£
http://g.zhubajie.com/urllink.php?id=128733297robb6l7cg4keoy0
3Â¥2012-10-16 15:39:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qiusj

½ð³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
2Â¥: Originally posted by Nkxz at 2012-10-16 15:35:36
ÓÃÏÂÃæµÄmatlab³ÌÐò¼´¿É¡£ÆäÖÐXÊÇÐèÒª±»·Ö×éµÄÑùÆ·µÄ½üºìÍâ¹âÆ×ÑùÆ·¼¯£¬kÊÇÐèҪѡ³öµÄÑùÆ·¸öÊý¡£



function =kenstone(X,k)
tic
=size(X);
if k>=m | k<=0  
    h=errordlg('Wrongly specified nu ...

ÑùÆ·NIRɨÃèÁË£¬¾ßÌåÈçºÎ²Ù×÷¡£
4Â¥2012-10-17 21:19:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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