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Table 2

RNNs performance for TSI prediction (mean values), and the same metrics applied to physical models’ (SATIRE and EMPIRE) daily reconstructed values. This performance was obtained for the test period of 2012/11/20 to 2012/12/18.

LSTM
GRU
MSE MAPE (%) R2 (%) R (%) MSE MAPE (%) R2 (%) R (%)
Six hours 0.005 0.004 89.9 97.5 0.005 0.004 89.5 97.0
Twelve hours 0.006 0.005 87.8 95.9 0.006 0.005 87.4 95.8
Eighteen hours 0.009 0.006 82.3 93.3 0.009 0.006 82.2 93.2
One day 0.010 0.006 78.9 91.2 0.012 0.007 76.7 90.2
Two days 0.022 0.009 57.4 80.9 0.020 0.009 61.1 81.2
Three days 0.026 0.010 53.0 76.8 0.024 0.010 54.9 76.4
SATIRE 0.06 0.018 −25.4 99.2 0.06 0.018 −25.4 99.2
EMPIRE 0.03 0.011 36.5 90.3 0.03 0.011 36.5 90.3

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