Ya-chun MAO, Jian WEN, Yan-hua FU, Wang CAO, Zhan-guo ZHAO, Rui-bo DING. Quantitative Inversion Model Based on the Visible and Near-Infrared Spectrum for Skarn-Type Iron Ore[J]. Spectroscopy and Spectral Analysis, 2022, 42(1): 68
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 1, 68 (2022)
Fig. 1. Experimental samples
Fig. 2. Visible and near infrared spectra of samples
Fig. 3. Spectral curves after reciprocal logarithm processing
Fig. 4. Multivariate scatter corrected spectral curves
Fig. 5. Flow chart of genetic algorithm to select the optimal band
Fig. 6. Principal component analysis results
Fig. 7. The difference between the predicated value and the true value
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Table 1. Assessment of RF inversion results
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Table 2. Assessment of ELM inversion results
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