ex3.m

用Matlab编写的Bayes 分类器

function Bayes()
L=8;NUM=200;M=power(2,32);
M11=[7.825,6.750,5.835,8.525,6.615,7.065,7.865,4.435]';
E11=[1.304,1.281,0.351,-0.293,0.098,0.301,0.141,1.336;
    1.281,1.967,0.664,-0.219,0.259,0.556,0.276,2.094;
    0.351,0.664,7.138,1.192,2.726,1.116,0.678,2.097;
    -0.293,-0.219,1.192,2.269,1.367,0.146,0.201,-0.308;
    0.098,0.259,2.726,1.367,5.727,1.280,0.933,2.107;
    0.301,0.556,1.116,0.146,1.280,2.941,1.949,2.197;
    0.141,0.276,0.678,0.201,0.933,1.949,1.577,1.229;
    1.336,2.094,2.097,-0.308,2.107,2.197,1.229,6.606];
M21=[5.760,5.715,5.705,4.150,6.225,6.960,6.750,3.910]';
E21=[4.972,4.417,4.244,2.406,1.798,0.790,0.785,2.993;
    4.417,5.074,4.436,2.798,1.824,0.639,0.664,2.799;
    4.244,4.636,5.428,3.224,2.111,0.903,1.131,2.943;
    2.406,2.798,3.224,5.287,3.006,1.326,1.897,2.648;
    1.798,1.824,2.111,3.006,3.574,2.229,2.471,1.915;
    0.790,0.639,0.903,1.326,2.229,4.008,2.405,1.106;
    0.785,0.664,1.131,1.897,2.471,2.405,4.507,1.727;
    2.993,2.799,2.943,2.648,1.195,1.106,1.727,3.97];

[Z1 M12 E12]=Generate(M11,E11,NUM,L);
[Z2 M22 E22]=Generate(M21,E21,NUM,L);
[D1 MD1 ED1]=Generate(M11,E11,50,L);
[D2 MD2 ED2]=Generate(M21,E21,50,L);

e=Bayes(M12,E12,D1,M22,E22,D2)