Fisher判别matlab实现

Fisher线性判别（Fisher Linear Discrimination，FLD），也称线性判别式分析(Linear Discriminant Analysis, LDA)。FLD是基于样本类别进行整体特征提取的有效方法。它在使用PCA方法进行降维的基础上考虑到训练样本的类间信息。FLD方法在进行图像整体特征提取方面有着广泛的应用。压缩包中有完整的代码与结果图

%%%%%%%%%%%%%%%%%%%%%%%%%% Draw Graph %%%%%%%%%%%%%%%%%%%%%%%%%%
function DrawGraph（TrainingTestSetE）
b=[Training.y1Training.y2Training.y3Training.y4];
% 画测试集的图
for k=1:4   %要画4张图
Draw.C1=[1:TestSet.n1-E（k1）;1:TestSet.n1-E（k1）];    % 第一类中正确样本集合
Draw.E1=[1:E（k1）;1:E（k1）];                          % 第一类中错误样本集合
Draw.C2=[1:TestSet.n2-E（k2）;1:TestSet.n2-E（k2）];
Draw.E2=[1:E（k2）;1:E（k2）];
c1=0;
e1=0;
c2=0;
e2=0;
for i=1:TestSet.n
    y=Training.W*TestSet.X（i:）‘-b（k）;
    if TestSet.CN（i）==1
        if TestSet.CN（i）*y<0
            e1=e1+1;
            Draw.E1（1e1）=TestSet.X（i1）;
            Draw.E1（2e1）=TestSet.X（i2）;                    
        else
            c1=c1+1;
            Draw.C1（1c1）=TestSet.X（i1）;
            Draw.C1（2c1）=TestSet.X（i2）;        
        end
    else
        if TestSet.CN（i）*y<0
            e2=e2+1;
            Draw.E2（1e2）=TestSet.X（i1）;
            Draw.E2（2e2）=TestSet.X（i2）;                    
        else
            c2=c2+1;
            Draw.C2（1c2）=TestSet.X（i1）;
            Draw.C2（2c2）=TestSet.X（i2）;        
        end
    end
end
X1=[145:185];
X2=（b（k）-X1*Training.W（1））/Training.W（2）;
subplot（22k）;
plot（Draw.C1（1:）Draw.C1（2:）‘x‘Draw.E1（1:）Draw.E1（2:）‘rx‘...   % 画正类样本
     Draw.C2（1:）Draw.C2（2:）‘o‘Draw.E2（1:）Draw.E2（2:）‘ro‘...
     X1X2）;
title（[‘y‘ int2str（k）]）;
end
%%%%%%%%%%%%%%%%%%%%%%%% Draw Graph End %%%%%%%%%%%%%%%%%%%%%%%%

 属性            大小     日期    时间   名称
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     文件       1517  2007-05-09 09:40  fisher\fish\DrawGraph.m

     文件        826  2007-05-09 09:28  fisher\fish\Fisher.m

     文件     236278  2007-05-09 12:14  fisher\fish\fisher判别.bmp

     文件      12973  2007-05-09 11:40  fisher\fish\fisher判别.fig

     文件     236278  2007-05-09 12:14  fisher\fish\fisher判别孤点.bmp

     文件      12999  2007-05-09 11:39  fisher\fish\fisher判别孤点.fig

     文件        653  2018-11-07 20:02  fisher\fish\ReadStudent.m

     文件        764  2007-05-09 09:13  fisher\fish\Test_Set.m

     文件       2541  2007-05-09 09:36  fisher\fish\Train_Set.m

     文件       1218  2007-05-09 12:21  fisher\fish\实验结果.txt

    ..A.SHR       264  2006-04-03 09:32  fisher\fish\男女学生数据\Desktop.ini

    ..A.SHR         2  2006-11-02 14:51  fisher\fish\男女学生数据\Folder.htt

     文件       2459  2007-05-09 08:34  fisher\fish\男女学生数据\StudentsData1.txt

     文件       2503  2007-05-09 08:36  fisher\fish\男女学生数据\StudentsData2.txt

     目录          0  2018-11-07 19:47  fisher\fish\男女学生数据

     目录          0  2018-12-06 16:26  fisher\fish

     目录          0  2018-12-08 06:35  fisher

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