Table 1.

Parameters for evaluating performance metrics

Parameters	Calculation
Accuracy (Acc)	$\frac{\left(TP+TN\right)}{\left(TP+FP+TN+FN\right)}$
Specificity (Spe)	$\frac{\mathit{TN}}{\left(TN+FP\right)}$
Sensitivity (Sen)	$\frac{\mathit{TP}}{\left(TP+FN\right)}$
Positive- predictive value (PPV)	$\frac{\mathit{TP}}{\left(TP+FP\right)}$
Negative-predictive value (NPV)	$\frac{\mathit{TN}}{\left(TN+FN\right)}$
True positive rate (TRR)	$\frac{\mathit{TP}}{\left(FN+TP\right)}$
False positive rate (FPR)	$\frac{\mathit{FP}}{\left(TN+FP\right)}$
$F_1$	$2\frac{PPV\ast Sen}{PPV+Sen}$
$F_{1w}$	$\sum _{i}2.w_i\frac{PP{V}_i\ast Se{n}_i}{PP{V}_i+Se{n}_i}$ where $w_i=n_i/N$
AUC	$\int TPRd\left(\mathit{FPR}\right)$