Métrica de validación según WTG

\begin{matrix} q = \frac{n}{N} = \frac{1}{N} \cdot \sum_{i = 1}^{N} n_{i} \\ n_{i} = \{\begin{cases} 1, & if |\frac{P_{i} - O_{i}}{O_{i}}| \leq W_{rel} \\ 0, & else \end{cases} \end{matrix}

N	Total number of data points
n_i	Indicator function (1 if prediction is “correct”, 0 otherwise)
P_i	Predicted value
O_i	Reference value
W_rel	Allowed relative deviation

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