Detection of COD UV Absorption Spectra Based on PSO-PLS Hybrid Algorithm

Pei-chao ZHENG; Wei-neng ZHAO; Jin-mei WANG; Chun-hong LAI; Xiao-fa WANG; Xue-feng MAO

doi:10.3964/j.issn.1000-0593(2021)01-0136-05

Spectroscopy and Spectral Analysis, Volume. 41, Issue 1, 136(2021)

Detection of COD UV Absorption Spectra Based on PSO-PLS Hybrid Algorithm

Pei-chao ZHENG^*, Wei-neng ZHAO, Jin-mei WANG, Chun-hong LAI, Xiao-fa WANG, and Xue-feng MAO

Chongqing Municipal Level Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

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Fig. 1. Schematic diagram of the experimental setup

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Fig. 2. Ultraviolet absorption spectrum of standard solution

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Fig. 3. Particle swarm algorithm flowchart

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Fig. 4. Correlation between predicted value and true value

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Fig. 5. Trend graph of fitness function

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Fig. 6. Comparison of relative error between four prediction models

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Table 1. Comparison of four modeling methods
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Table 1. Comparison of four modeling methods
建模方法相关系数r 均方根误差
iPLS 0.999 97 0.622 6
PLS 0.999 90 1.180 9
SVR 0.999 32 1.725 3
PSO-PLS 0.999 98 0.155 1

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Pei-chao ZHENG, Wei-neng ZHAO, Jin-mei WANG, Chun-hong LAI, Xiao-fa WANG, Xue-feng MAO. Detection of COD UV Absorption Spectra Based on PSO-PLS Hybrid Algorithm[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 136

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