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libsvm_confmat

Confusion matrix for classification algorithms.

Calling Sequence

cm = libsvm_confmat(g, ghat)

Parameters

g:

known group labels

ghat:

predicted group labels

cm :

confusion matrix determined by the known group labels g and the predicted group labels ghat

Description

The confusion matrix CM(I,J) represents the count of instances whose known group labels are group J and whose predicted group labels are group I.

Examples

[label,instance]=libsvmread(fullfile(libsvm_getpath(),"demos","heart_scale"));
cc = libsvm_svmtrain(label,instance);
[predicted_label]=libsvm_svmpredict(label,instance,cc);
cm = libsvm_confmat(label,  predicted_label)

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