load?fisheriris?%?載入fisheriris數(shù)據(jù)集?
data?=?[meas（:1）?meas（:2）];?%?取出所有樣本的前2維作為特征

%?轉(zhuǎn)化為“是不是setosa類”的2類問題
groups?=?ismember（species‘setosa‘）;

%?利用交叉驗證隨機分割數(shù)據(jù)集
[train?test]?=?crossvalind（‘holdOut‘groups）;

%?訓(xùn)練一個線性的支持向量機，訓(xùn)練好的分類器保存在svmStruct
svmStruct?=?svmtrain（data（train:）groups（train）‘showplot‘true）;


%?利用包含訓(xùn)練所得分類器信息的svmStruct對測試樣本進行分類，分類結(jié)果保存到classes
classes?=?svmclassify（svmStructdata（test:）‘showplot‘true）;

%?計算測試樣本的識別率
nCorrect?=?sum（?classes?==?groups（test:）?）;?%?正確分類的樣本數(shù)目
accuracy?=?nCorrect?/?length（classes）?%?計算正確率

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????686??2011-10-07?09:33??chapter15\code\ex15_2.m

?????文件????????636??2011-10-07?09:29??chapter15\code\FaceRec\classify.asv

?????文件????????678??2011-10-07?09:29??chapter15\code\FaceRec\classify.m

?????文件?????207976??2011-10-07?09:29??chapter15\code\FaceRec\composite.tiff

?????文件???????1579??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\README

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\1.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\10.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\2.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\3.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\4.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\5.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\6.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\7.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\8.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s1\9.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\1.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\10.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\2.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\3.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\4.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\5.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\6.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\7.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\8.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s10\9.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s11\1.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s11\10.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s11\2.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s11\3.pgm

?????文件??????10318??2011-10-07?09:29??chapter15\code\FaceRec\Data\ORL\s11\4.pgm

............此處省略465個文件信息