Semi-Supervised Ensemble Classifier with Improved Sparrow Search Algorithm and Its Application in Pulmonary Nodule Detection

Table 10

The calculation formulas of accuracy, sensitivity and specificity.

Evaluation index	Calculation formulas
Accuracy (ACC)
Sensitivity (SEN)
Specificity (SPE)
False positive rate (FPR)
False negative rate (FNR)

where TP stands for true positive, TN for true negative, FP for false positive, and FN for false negative.