Spectroscopy and Spectral Analysis, Volume. 42, Issue 11, 3368(2022)
Near-Infrared Spectral Characteristics of Sandstone and Inversion of Water Content
Figures & Tables(8)
Fig. 3. Near-infrared spectra of sandstone with different degrees of saturation
(a): Original spectra; (b): First derivative pre-processed spectra
Fig. 4. Schematic diagram of characteristic variables of near infrared spectrum
Table 1. Normalized characteristic variable
View tableView in ArticleTable 1. Normalized characteristic variable
Saturation A H F L R 99% 0.865 9 0.842 6 0.218 2 0.259 5 0.206 4 83% 0.588 9 0.594 6 0.285 8 0.197 7 0.354 1 75% 0.731 0 0.661 9 0.301 6 0.400 3 0.186 0 67% 0.588 4 0.651 8 0.279 2 0.259 1 0.288 0 59% 0.674 8 0.656 6 0.318 1 0.285 7 0.315 0 51% 0.694 3 0.446 7 0.457 4 0.482 1 0.317 1 43% 0.201 1 0.227 3 0.431 1 0.547 0 0.221 5 35% 0.118 6 0.175 0 0.536 6 0.839 7 0.088 6 27% 0.358 2 0.284 5 0.565 8 0.498 8 0.445 8 19% 0.169 1 0.132 1 0.641 2 1.00 0 0.078 3 11% 0.204 0 0.179 6 0.552 9 0.548 1 0.382 6 3% 0.230 0 0.160 5 0.917 0 0.534 3 0.880 3 0% 0.304 8 0.251 1 0.366 0 0.387 5 0.283 6
Table 2. MIC value caclulated to get the correlation degree between saturation and spectral characteristics
View tableView in ArticleTable 2. MIC value caclulated to get the correlation degree between saturation and spectral characteristics
Peak MIC A H F L R R1 (1 400 nm) S 0.946 0 0.980 4 0.642 3 0.619 4 0.456 5 R2 (1 900 nm) S 0.960 2 0.980 4 0.906 6 0.620 3 0.952 4
Table 3. Training results of different number of neurons in hidden layer
View tableView in ArticleTable 3. Training results of different number of neurons in hidden layer
隐含层神经元个数 准确率/% 训练集 测试集 5 72.2 64.5 6 86.1 74.2 7 94.4 74.2 8 94.4 71.0 9 93.1 77.4 10 90.3 83.9 11 95.8 71.0 12 100.0 77.4 13 100.0 74.2 14 100.0 71.0 15 97.2 77.4
Table 4. Identification results
View tableView in ArticleTable 4. Identification results
类型 准确率/% 0~20% 83.3 21%~40% 83.3 41%~60% 83.3 61%~80% 66.7 81%~100% 100 Training 90.3 Test 83.9
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Dong-sheng WANG, Hai-long WANG, Fang ZHANG, Lin-fang HAN, Yun LI. Near-Infrared Spectral Characteristics of Sandstone and Inversion of Water Content[J]. Spectroscopy and Spectral Analysis, 2022, 42(11): 3368
Paper Information
Category: Research Articles
Received: Jul. 28, 2021
Accepted: --
Published Online: Nov. 23, 2022
The Author Email: WANG Dong-sheng (wds0301@outlook.com)
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