Hui-ping LEI, Bing-liang HU, Tao YU, Jia-cheng LIU, Wei LI, Xue-ji WANG, Yan ZOU, Qian SHI. Research on the Quantitative Analysis Method of Nitrate in Complex Water by Full Scale Spectrum With GS-SVR[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 372
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 2, 372 (2021)
Fig. 1. Determination of parameter search space
Fig. 2. Overall flow of the experiment
Fig. 3. Main measurement technology schematic diagram of spectrometric method
Fig. 4. Absorption spectrum of 94 samples with different concentrations
Fig. 5. 3D view for the first parameter optimization of Improved GS-SVR
Fig. 6. 3D view for the second parameter optimization of Improved GS-SVR
Fig. 7. 3D view for the third parameter optimization of Improved GS-SVR
Fig. 8. (a) Comparison between the predicted value of improved GS-SVR and the real value; (b) Relative error of the predicted value of improved GS-SVR
Fig. 9. (a) Comparison between predicted value and real value of different prediction models; (b) Relative error of predicted values of different prediction models
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Table 1. Comparison of evaluation parameters of different prediction models
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