Query using Support vector machines
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Hello, I am attaching a code below for training using SVM for Faces. But i am not getting any plot & also the recognition rate is only 50%. Can you solve the problem? I am attaching the basic code below:-
In training matrix i have taken 2 rows each row has 2 samples of a individual. Now i have fixed the target matrix at:-
target(1:2,:)=1
target(3:4,:)=2
Now i am training the data as follows:-
svmModel = svmtrain(arr1', labelData, ...
'Autoscale',true, 'Showplot',true, 'Method','QP', ...
'BoxConstraint',2e-1, 'Kernel_Function','rbf', 'RBF_Sigma',1);
classes = svmclassify(svmModel,finaltest,'showplot','true')
cp = classperf(cp, classes, finaltest')
1) I am getting the error:-
Error using classperf (line 373)
Index vector has invalid values.
Error in Svmtrain2 (line 205)
cp = classperf(cp, classes, finaltest')
2) Please tell me how ti increase the recognition rate?
3) Please tell me how to view the classification plot of SVM ?
Thanks in advance
Ampi.
2 Comments
Walter Roberson
on 3 Dec 2012
Formatted for you. Please review http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup
Walter Roberson
on 21 Dec 2012
Does your newer question replace this one? http://www.mathworks.co.uk/matlabcentral/answers/55685-query-regarding-classification-of-faces-using-svm
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