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[ Last edited by nono2009 on 2009-9-23 at 22:10 ]
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mininurse

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mininurse

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%%%% generate the random x, y, z dataset for the first Gaussian
A=randn(400,1,3);
X1=A(:,:,1)+1; %% x axis dataset
Y1=A(:,:,2);  %% y axis dataset
Z1=A(:,:,3);  %% z axis dataset

%%%% generate the random x, y, z dataset for the second Gaussian
B=randn(400,1,3);
X2=B(:,:,1)-1; %% x axis dataset
Y2=B(:,:,2);  %% y axis dataset
Z2=B(:,:,3);  %% z axis dataset

%% the outcome

newX=(X1+X2)/2; %% x dataset for the new mutual gaussian distribution
newY=(Y1+Y2)/2; %% y dataset for the new mutual gaussian distribution
newZ=(Z1+Z2)/2; %% z dataset for the new mutual gaussian distribution
ÒýÓûØÌû:
Originally posted by woshilsh at 2009-7-1 19:21:
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[ Last edited by mininurse on 2009-7-2 at 09:06 ]
2Â¥2009-07-02 08:55:44
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woshilsh

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Originally posted by mininurse at 2009-7-2 08:55:
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%%%% generate the random x, y, z dataset for the first Gaussian
A=randn(400,1,3);
X1=A(:,:,1)+1; %% x axis dataset
Y1=A(:,:,2);  %% y axis dataset
Z1=A(:,:,3);  %% z axis ...

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3Â¥2009-07-02 12:36:42
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hitzhang

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woshilsh(½ð±Ò+5,VIP+0):ÆÚ´ýÕÅÐÖÓпÕÔÙ¿´¿´£¬ÈýάÊý¾ÝզŪ£¬ÈçºÎµÃµ½ 7-2 19:54
ÒýÓûØÌû:
Originally posted by woshilsh at 2009-7-1 19:21:
ÎÒÏëÉú³ÉÒ»¸öÈýάµÄÊý¾Ý£¬

Êý¾Ý·þ´ÓË«·å¸ß˹·Ö²¼£¬Òª400¸öµã£¬ÖÐÐÄÔÚ£¨1£¬0£¬0£©ºÍ£¨-1£¬0£¬0£©

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[ Last edited by woshilsh on 2009-7-2 at 16:34 ]

>> MU = [-1 0;1 0];
>> SIGMA = cat(3,[.5 0;0 .5],[.5 0;0 .5]);
>> p = ones(1,2)/2;
>> obj = gmdistribution(MU,SIGMA,p);
>> ezsurf(@(x,y)pdf(obj,[x y]),[-2:.1:2],[-2:.1:2])
>>
4Â¥2009-07-02 18:26:05
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