Qing LI, Li XU, Shan-gui PENG, Xiao LUO, Rong-qin ZHANG, Zhu-yun YAN, Yong-sheng WEN. Research on Identification of Danshen Origin Based on Micro-Focused Raman Spectroscopy Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(6): 1774

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- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 6, 1774 (2022)

Fig. 1. Optimization results of random forest model parameters
(a): The relationship diagram between n_estimator and OOB_SCORE; (b): The relationship diagram between max_features and OOB_SCORE
(a): The relationship diagram between n_estimator and OOB_SCORE; (b): The relationship diagram between max_features and OOB_SCORE

Fig. 1. Origins of danshen and their representative samples

Fig. 2. The relationship between the importance of spectral variables after 1st-d processing and wave numbers

Fig. 2. Original spectra of surface of danshen with different scanning times and tanshinone components

Fig. 3. The confusion matrix of the test set of the optimal RF model (a) and the optimal RF-VS model (b)
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Table 1. Information of 150 samples of danshen
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Table 1. The results of best models under the conditions of different scanning times
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Table 2. The results of the model under the conditions of different determination times
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Table 3. Test set confusion matrix of PLS-DA model after MSC processing

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