Table 7 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 ± 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 | 565 nm | 585 nm | 515 nm | 545 nm | 745 nm | 695 nm |
− 0.056 | − 0.030 | 0.029 | − 0.022 | 0.020 | − 0.019 | ||
400–1000 nm | 685 nm | 565 nm | 655 nm | 545 nm | 495 nm | 475 nm | |
− 0.083 | − 0.076 | 0.073 | − 0.054 | − 0.053 | 0.053 | ||
400–700 nm | 485 nm | 445 nm | 625 nm | 545 nm | 495 nm | 475 nm | |
0.111 | 0.093 | − 0.071 | 0.066 | − 0.063 | 0.058 | ||
FNN | 400–1700 nm | 565 nm | 655 nm | 505 nm | 1155 nm | 485 nm | 585 nm |
− 14.74 | 14.085 | 12.355 | 11.536 | 9.276 | − 8.535 | ||
400–1000 nm | 575 nm | 655 nm | 505 nm | 555 nm | 485 nm | 595 nm | |
− 14.289 | 13.686 | 12.766 | − 11.332 | 9.22 | − 7.660 | ||
400–700 nm | 655 nm | 495 nm | 695 nm | 565 nm | 515 nm | 435 nm | |
37.260 | 23.970 | − 23.750 | − 18.619 | 16.998 | − 16.412 | ||
