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Table 1 The evaluation index of receiver operating characteristic (ROC)

From: Kernel PCA feature extraction and the SVM classification algorithm for multiple-status, through-wall, human being detection

 

Predicted

1

0

Sum

Actual

1

True positive (TP)

False negative (FN)

Actual positive (TP + FN)

0

False positive (FP)

True negative (TN)

Actual negative (FP + TN)

Sum

 

Predicted positive (TP + FP)

Predicted negative (FN + TN)

TP + FP + FN + TN