Mengqi Tao, Jiaxiang Liu, Yue Wu, Zhiqiang Ning, Yonghua Fang. Application of XGBoost in Gas Infrared Spectral Recognition[J]. Acta Optica Sinica, 2020, 40(7): 0730002
- Acta Optica Sinica
- Vol. 40, Issue 7, 0730002 (2020)
Fig. 1. Flow chart of XGBoost algorithm
![Schematic of XGBoost algorithm[13]](/richHtml/gxxb/2020/40/7/0730002/img_2.jpg)
Fig. 2. Schematic of XGBoost algorithm[13]
Fig. 3. Comparison before and after spectral pretreatment. (a)(b) Trichloromethane; (c)(d) paraxylene; (e)(f) tetrachloroethylene
Fig. 4. Flow chart of XGBoost model training
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Table 1. Features for gas spectral data classification
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Table 2. Classification error matrix for three kinds of gases
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Table 3. Classification accuracy for five models
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