Laser & Optoelectronics Progress, Volume. 58, Issue 14, 1404003(2021)
Research on Spectral Recognition of Drug Mixture Based on SVM-MLP Fusion Model
Figures & Tables(10)
Fig. 5. Classification effects diagram of two models under different training ratios
Table 1. Composition of heroin and methamphetamine mixed sample
View tableTable 1. Composition of heroin and methamphetamine mixed sample
Samples Heroin quality /mg Additives Additive quality /mg Heroin mass score 1 0.5 Caffeine 4.5 0.1 2 0.5 Glucose 4.5 0.1 3 0.5 Phenacetin 4.5 0.1 4 0.5 Starch 4.5 0.1 5 0.5 Sucrose 4.5 0.1 6 1.0 Caffeine 4.0 0.2 7 1.0 Glucose 4.0 0.2 8 1.0 Phenacetin 4.0 0.2 9 1.0 Starch 4.0 0.2 10 1.0 Sucrose 4.0 0.2 11 1.5 Caffeine 3.5 0.3 12 1.5 Glucose 3.5 0.3 13 1.5 Phenacetin 3.5 0.3 14 1.5 Starch 3.5 0.3 15 1.5 Sucrose 3.5 0.3 16 2.0 Caffeine 3.0 0.4 17 2.0 Glucose 3.0 0.4 Samples Heroin quality /mg Additives Additive quality /mg Heroin mass score 18 2.0 Phenacetin 3.0 0.4 19 2.0 Starch 3.0 0.4 20 2.0 Sucrose 3.0 0.4 21 2.5 Caffeine 2.5 0.5 22 2.5 Glucose 2.5 0.5 23 2.5 Phenacetin 2.5 0.5 24 2.5 Starch 2.5 0.5 25 2.5 Sucrose 2.5 0.5 26 3.0 Caffeine 2.0 0.6 27 3.0 Glucose 2.0 0.6 28 3.0 Phenacetin 2.0 0.6 29 3.0 Starch 2.0 0.6 30 3.0 Sucrose 2.0 0.6 31 3.5 Caffeine 1.5 0.7 32 3.5 Glucose 1.5 0.7 33 3.5 Phenacetin 1.5 0.7 34 3.5 Starch 1.5 0.7 35 3.5 Sucrose 1.5 0.7 36 4.0 Caffeine 1.0 0.8 37 4.0 Glucose 1.0 0.8 38 4.0 Phenacetin 1.0 0.8 39 4.0 Starch 1.0 0.8 40 4.0 Sucrose 1.0 0.8 41 4.5 Caffeine 0.5 0.9 42 4.5 Glucose 0.5 0.9 43 4.5 Phenacetin 0.5 0.9 44 4.5 Starch 0.5 0.9 45 4.5 Sucrose 0.5 0.9 46 0.5 Caffeine 4.5 0.1 47 0.5 Glucose 4.5 0.1 48 0.5 Paracetamol 4.5 0.1 49 0.5 Phenacetin 4.5 0.1 50 0.5 Starch 4.5 0.1 51 1.0 Caffeine 4.0 0.2 52 1.0 Glucose 4.0 0.2 53 1.0 Paracetamol 4.0 0.2 54 1.0 Phenacetin 4.0 0.2 55 1.0 Starch 4.0 0.2 56 1.5 Caffeine 3.5 0.3 57 1.5 Glucose 3.5 0.3 58 1.5 Paracetamol 3.5 0.3 Samples Heroin quality /mg Additives Additive quality /mg Heroin mass score 59 1.5 Phenacetin 3.5 0.3 60 1.5 Starch 3.5 0.3 61 2.0 Caffeine 3.0 0.4 62 2.0 Glucose 3.0 0.4 63 2.0 Paracetamol 3.0 0.4 64 2.0 Phenacetin 3.0 0.4 65 2.0 Starch 3.0 0.4 66 2.5 Caffeine 2.5 0.5 67 2.5 Glucose 2.5 0.5 68 2.5 Paracetamol 2.5 0.5 69 2.5 Phenacetin 2.5 0.5 70 2.5 Starch 2.5 0.5 71 3.0 Caffeine 2.0 0.6 72 3.0 Glucose 2.0 0.6 73 3.0 Paracetamol 2.0 0.6 74 3.0 Phenacetin 2.0 0.6 75 3.0 Starch 2.0 0.6 76 3.5 Caffeine 1.5 0.7 77 3.5 Glucose 1.5 0.7 78 3.5 Paracetamol 1.5 0.7 79 3.5 Phenacetin 1.5 0.7 80 3.5 Starch 1.5 0.7 81 4.0 Caffeine 1.0 0.8 82 4.0 Glucose 1.0 0.8 83 4.0 Paracetamol 1.0 0.8 84 4.0 Phenacetin 1.0 0.8 85 4.0 Starch 1.0 0.8 86 4.5 Caffeine 0.5 0.9 87 4.5 Glucose 0.5 0.9 88 4.5 Paracetamol 0.5 0.9 89 4.5 Phenacetin 0.5 0.9 90 4.5 Starch 0.5 0.9
Table 2. Principal component analysis scores of partial data
View tableTable 2. Principal component analysis scores of partial data
Sample name PCA1 PCA2 PCA3 PCA4 PCA5 PCA6 PCA7 PCA8 Heroin 10 -1.73499 1.05294 -0.24404 0.54695 1.23830 1.86434 -0.85063 0.30997 Heroin 20 -1.38742 1.08753 -0.49341 0.63136 1.24009 1.91988 -0.82360 0.01083 Heroin 30 -1.36164 1.31395 -0.46624 0.02419 0.53490 1.55977 0.99659 0.82939 Heroin 40 -1.26595 1.30657 -0.48177 -0.02275 0.57038 1.41293 0.98688 0.84195 Heroin 50 -1.42631 1.11977 -0.43161 -0.06417 0.41947 1.82224 0.55125 0.68340 Methamphetamine 10 -1.82849 0.65761 -0.19163 0.39233 1.02352 2.11987 -1.59872 0.70246 Methamphetamine 20 -1.62927 -0.30444 -0.28452 -0.26524 0.56580 1.76207 -1.45115 0.99943 Methamphetamine 30 -1.61720 -0.11446 -0.20642 -0.04146 0.62600 1.77511 -0.81298 0.14576 Methamphetamine 40 -1.37645 -0.47555 -0.20890 -0.02513 0.67996 1.46555 -0.43467 0.06310 Methamphetamine 50 -1.27684 -0.60591 -0.35037 -0.09153 0.58028 1.56357 -0.93970 0.27797 Sample name PCA9 PCA10 PCA11 PCA12 PCA13 PCA14 PCA15 Heroin 10 0.66874 0.04875 0.14664 0.23064 0.50656 -0.15218 0.11773 Heroin 20 0.96444 -0.50303 0.21401 0.47814 1.49474 -0.32094 -0.05898 Heroin 30 1.40614 0.64159 0.52790 0.61595 -0.82069 0.88689 -0.50806 Heroin 40 1.35271 0.36899 0.55841 0.43866 -0.34179 0.78488 -0.37276 Heroin 50 1.19463 0.66721 0.21536 1.00858 -0.25017 0.69153 -0.39813 Methamphetamine 10 0.18801 0.11184 -0.28867 -0.68909 -0.52643 -0.59025 0.38801 Methamphetamine 20 -0.12065 0.07006 -0.46789 -0.04990 -0.34572 -0.95516 0.10060 Methamphetamine 30 0.46265 0.17059 -0.36223 -0.22779 -0.59669 -0.41832 -0.08377 Methamphetamine 40 0.58264 0.26791 -0.27522 0.82319 0.05651 -0.76757 -0.06932 Methamphetamine 50 0.32392 0.04199 -0.44118 0.03576 0.18528 -0.67303 0.35902
Table 3. Accuracy of sample classification under four kernel functions unit: %
View tableTable 3. Accuracy of sample classification under four kernel functions unit: %
Function Comprehensive classification accuracy Heroin classification accuracy Classification accuracy of methamphetamine RBF-SVM 48.9 97.8 0 Polynomial-SVM 47.8 95.6 0 Sigmoid-SVM 35.6 71.2 0 Linear-SVM 48.9 97.8 0
Table 4. Classification effect with polynomial SVM model with different Gamma values
View tableTable 4. Classification effect with polynomial SVM model with different Gamma values
Gama Number of heroin samples Number of correctly classified samples Classification accuracy /% 0.01 45 39 86.7 0.05 45 39 86.7 0.10 45 43 95.6 1.00 45 43 95.6 10.00 45 43 95.6 100.00 45 43 95.6
Table 5. Average classification accuracy under different training ratios unit: %
View tableTable 5. Average classification accuracy under different training ratios unit: %
Training sample ratio Constitution Additives 50 84.9 96.5 60 80.4 91.5 70 77.8 91.9 80 74.2 85.9 90 71.1 88.4
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Wenjie Yan, Wenhui Lu, Jifen Wang. Research on Spectral Recognition of Drug Mixture Based on SVM-MLP Fusion Model[J]. Laser & Optoelectronics Progress, 2021, 58(14): 1404003
Paper Information
Category: Detectors
Received: Oct. 20, 2020
Accepted: Nov. 18, 2020
Published Online: Jul. 14, 2021
The Author Email: Jifen Wang (1450201565@qq.com)
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