Jie-hong CHENG, Zheng-guang CHEN. Wavelength Selection of Near-Infrared Spectra Based on Improved SiPLS-Random Frog Algorithm[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3451
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 11, 3451 (2020)
Fig. 1. Original and pre-processed spectra
(a): Original; (b): S-G first derivative
(a): Original; (b): S-G first derivative
Fig. 2. The result of random frog
Fig. 3. The result of Si-RF
(a): Selection probability of each variable;(b): RMSEV values of each model
(a): Selection probability of each variable;(b): RMSEV values of each model
Fig. 4. Correlation between measured and predicted values of SOM obtained from different models
(a): Full spectrum PLS; (b): RF-MLR; (c): Si-RF-MLR
(a): Full spectrum PLS; (b): RF-MLR; (c): Si-RF-MLR
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Table 1. Statistical data of soil organic matter content
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Table 2. Sub-interval optimization results of SiPLS
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Table 3. Optimal results of different iteration times
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Table 4. Results of model with different wavelength selection methods
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