Yu Huang, Yanlin Shao, Wei Wei, Qihong Zeng. Study on the Decision Tree Model for Carbonate Rock Lithology Identification Based on Hyperspectral Data[J]. Laser & Optoelectronics Progress, 2025, 62(8): 0837007
- Laser & Optoelectronics Progress
- Vol. 62, Issue 8, 0837007 (2025)
Fig. 1. Schematic diagram of spectral waveform features
Fig. 2. Technology roadmap of proposed algorithm
Fig. 3. Spectral curves before and after preprocessing
Fig. 4. Ranking of feature importance
Fig. 5. Box plots of particial features. (a) Absorption bandwidth; (b) right shoulder wavelength of the absorption band; (c) the lowest point wavelength of the absorption valley
Fig. 6. Scatter plot of particial features
Fig. 7. Classification accuracy of different features at different thresholds. (a) Right shoulder wavelength of the absorption band and the lowest point wavelength of the absorption valley; (b) absorption bandwidth
Fig. 8. Decision tree model accuracy under different feature combinations
Fig. 9. Processing flowchart of decision tree
Fig. 10. Classification accuracy of different features for different test sets. (a) The lowest point wavelength of the absorption valley; (b) right shoulder wavelength of the absorption band; (c) absorption bandwidth
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Table 1. Confusion matrix
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Table 2. Comparison of accuracy among different models
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Table 3. Feature importance under different test set proportions
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Table 4. Confusion matrix by decision tree model
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