Hyperspectral Analysis of Milk Protein Content Using SVM Optimized by Sparrow Search Algorithm

Table 1. Precision comparison of preprocessing models
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Table 1. Precision comparison of preprocessing models
建模方法 RMSEP $R_{p}^{2}$ RMSEC $R_{c}^{2}$
N-PLS 0.313 6 0.924 4 0.129 3 0.963 5
Standardization-PLS 0.286 9 0.927 7 0.120 7 0.965 4
MSC-PLS 0.261 6 0.931 6 0.105 4 0.968 9

Table 2. Precision comparison of different models

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Table 2. Precision comparison of different models

建模方法	变量数	RMSE	R²	Time/s
Full-PLS	125	0.091 4	0.930 6	6.132 1
CARS-PLS	27	0.037 6	0.959 8	5.755 4
SPA-PLS	17	0.052 7	0.956 1	5.269 7
Full-SVM	125	0.105 4	0.928 6	4.231 1
CARS-SVM	27	0.040 1	0.957 1	3.987 1
SPA-SVM	17	0.053 3	0.948 6	3.236 7
Full-GA-SVM	125	0.029 7	0.962 1	16.326 9
CARS-GA-SVM	27	0.015 3	0.979 8	13.143 2
SPA-GA-SVM	17	0.023 1	0.968 7	10.052 7
Full-PSO-SVM	125	0.088 4	0.936 9	13.241 1
CARS-PSO-SVM	27	0.031 6	0.964 9	10.231 1
SPA-PSO-SVM	17	0.037 6	0.959 8	8.534 1
Full-SSA-SVM	125	0.009 2	0.988 9	6.056 9
CARS-SSA-SVM	27	0.001 1	0.999 6	4.112 1
SPA-SSA-SVM	17	0.004 8	0.998 4	4.052 7

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Mei-chen LIU, He-ru XUE, Jiang-ping LIU, Rong-rong DAI, Peng-wei HU, Qing HUANG, Xin-hua JIANG. Hyperspectral Analysis of Milk Protein Content Using SVM Optimized by Sparrow Search Algorithm[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1601

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