Table 2.

Percentage metrics

MAPE	Mean absolute percentage error	$\frac{100}{n}{\sum }_{i=1}^n|\frac{Y_i-{\widehat{Y}}_i}{Y_i}|$
ACC	Accuracy	$1-\frac{{\sum }_{i=1}^n|{\widehat{Y}}_i-Y_i|}{{\sum }_{i=1}^n{Y}_i}$
$R^2$	R squared	$\sqrt{\frac{{\sum }_{i=1}^n{({\widehat{Y}}_i-\overline{Y})}^2}{{\sum }_{i=1}^n{(Y_i-\overline{Y})}^2}}$
IA	Index of agreement	$1-\frac{{\sum }_{i=1}^n{(Y_i-{\widehat{Y}}_i)}^2}{{\sum }_{i=1}^n(|Y_i-{\widehat{Y}}_i|+|{\widehat{Y}}_i-Y_i{|)}^2}$
RECALL	Sensitivity	$\frac{\mathit{TP}}{TP+FN}$
PREC	Positive predictive value	$\frac{\mathit{TP}}{TP+FP}$
FM	F measure	$\frac{PREC·RECALL}{PREC+RECALL}$