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Table 4: Values of the performance indices (RMSE, MAE, MRE) calculated over different test sets for the buffered MLP, FIR-MLP, and IIR-LRNN trained to estimate the reactor neutron flux dynamics.

Buffered MLP Errors Forcing function Number of sequences RMSE MAE MRE Step 80 0.0805 0.0523 0.0051 Ramp 80 0.0751 0.0503 0.0065 Sine 80 0.0763 0.0513 0.0041 Random 80 0.0792 0.0520 0.0047 FIR-MLP Errors Forcing function Number of sequences RMSE MAE MRE Step 80 0.0753 0.0487 0.0024 Ramp 80 0.0698 0.0435 0.0050 Sine 80 0.0705 0.0450 0.0035 Random 80 0.0748 0.0482 0.0038 IIR-LRNN Errors Forcing function Number of sequences RMSE MAE MRE Validation Step 80 0.0098 0.0060 0.0003 Ramp 80 0.0049 0.0039 0.0037 Sine 80 0.0058 0.0051 0.0011 Random 80 0.0063 0.0054 0.0021