Table 2.

Error metrics of prediction model

Name	Abbreviation	Formulation
Mean absolute percentage error	MAPE	$\frac{1}{n-1}\sum _{k=2}^n|\frac{x^{(0)}(k)-{\widehat{x}}^{(0)}(k)}{x^{(0)}(k)}|\times 100$
Mean absolute error	MAE	$\frac{1}{n-1}\sum _{k=2}^n|{\widehat{x}}^{(0)}(k)-x^{(0)}(k)|$