An Expert System Based on Fisher Score and LS-SVM for Cardiac Arrhythmia Diagnosis

Table 1

Confusion matrix.

Predicted	Actual
	Positive	Negative
Positive	TP (true positive)	FP (false positive)
Negative	FN (false negative)	TN (true negative)

TP represents an instance, which is actually positive and predicted by the model as positive.
FN represents an instance, which is actually positive but predicted by the model as negative.
TN represents an instance, which is actually negative and predicted by the model as negative.
FP represents an instance, which is actually negative but predicted by the model as positive.