Wei QI, Peng FENG, Biao WEI, Dong ZHENG, Ting-ting YU, Peng-yong LIU. Feature Wavelength Optimization Algorithm for Water Quality COD Detection Based on Embedded Particle Swarm Optimization-Genetic Algorithm[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 194
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 1, 194 (2021)
Fig. 1. Flow chart of embedded particle swarm optimization-genetic algorithm
Fig. 2. Comparison between the original and denoising spectra
Fig. 3. Comparison of iterative processes of EPSO_GA, PSO and GA algorithms
Fig. 4. Performance of each model for COD prediction
(a): Full-spectrum PLS; (b): PSO_PLS; (c): GA_PLS; (d): EPSO_GA_PLS
(a): Full-spectrum PLS; (b): PSO_PLS; (c): GA_PLS; (d): EPSO_GA_PLS
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Table 1. UV-Visible absorption spectrum data set
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Table 2. Experimental results of EPSO_GA, PSO and GA algorithms
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Table 3. Errors between COD predicted values and true COD values for each model
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Table 4. Indicator performance of each model
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