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. 2020 May 9;57(12):4533–4540. doi: 10.1007/s13197-020-04492-5

Table 2.

The classification accuracy of ANN that used one hidden neuron in classifying the Brix of pineapples using K-fold cross-validation and holdout validation

Third overtone region (NIRSystems 2002) Excluded wavelength (nm) Accuracy
K-fold cross-validation accuracy (%) Holdout validation accuracy (%)
Training Testing
Both N–H and C–H stretching None 82.38 76.85 75.00
N–H stretching (775–850 nm) 780 78.81 75.00 80.56
850 82.38 79.63 72.22
C–H stretching (850–950 nm) 870 80.48 70.37 77.78
910 77.74 74.07 77.78
940 82.14 75.00 80.56