Table 8 Top six Score ranked spectral bands associated with the convolution neural network and feedforward neural network models using the spectral data with a bandwidth of ± 7.5 nm in three spectral ranges. The Socre is the absolute mean of the integrated gradients.
Model | Spectral range | Bands (nm) and their mean of the integrated gradients | |||||
|---|---|---|---|---|---|---|---|
1st | 2nd | 3rd | 4th | 5th | 6th | ||
CNN | 400–1700 nm | 587.5 nm | 542.5 nm | 677.5 nm | 647.5 nm | 992.5 nm | 737.5 nm |
− 0.134 | 0.089 | 0.076 | 0.056 | 0.043 | − 0.038 | ||
400–1000 nm | 512.5 nm | 452.5 nm | 602.5 nm | 572.5 nm | 692.5 nm | 662.5 nm | |
0.270 | − 0.187 | − 0.169 | − 0.167 | − 0.140 | 0.132 | ||
400–700 nm | 572.5 nm | 497.5 nm | 452.5 nm | 617.5 nm | 662.5 nm | 527.5 nm | |
− 0.090 | 0.073 | − 0.062 | 0.030 | 0.024 | 0.023 | ||
FNN | 400–1700 nm | 572.5 nm | 662.5 nm | 497.5 nm | 1172.5 nm | 707.5 nm | 602.5 nm |
− 19.366 | 14.214 | 13.285 | 12.81 | − 9.030 | − 8.708 | ||
400–1000 nm | 575.5 nm | 497.5 nm | 662.5 nm | 707.5 nm | 962.5 nm | 527.5 nm | |
− 21.109 | − 16.406 | − 12.557 | − 8.242 | − 7.978 | 6.651 | ||
400–700 nm | 662.5 nm | 692.5 nm | 557.5 nm | 497.5 nm | 437.5 nm | 632.5 nm | |
42.964 | − 36.237 | − 31.850 | 28.393 | − 18.123 | − 10.25 | ||
