Jun Hu, Yande Liu, Xudong Sun, Bin Li, Jia Xu, Aiguo Ouyang. Quantitative Determination of Benzoic Acid in Flour Based on Terahertz Time-Domain Spectroscopy and BPNN Model[J]. Laser & Optoelectronics Progress, 2020, 57(7): 073002
- Laser & Optoelectronics Progress
- Vol. 57, Issue 7, 073002 (2020)
Fig. 1. Topology structure of BP neural network
Fig. 2. Terahertz absorption spectra of benzoic acid with different mass fraction in flour
Fig. 3. Root-mean-square error of benzoic acid-doped flour changed with principal component factor
Fig. 4. Regression coefficient of terahertz absorption spectrum of benzoic acid-doped flour in PLS model
Fig. 5. Optimized results of BPNN for number of input vectors and hidden layers
Fig. 6. Relationship between predicted values and actual values of mass fraction in different models
| ||||||||||||||||||||||||||||||||||||||||||||||
Table 1. Mass fraction of benzoic acid in calibration and prediction sets
|
Table 2. Results of terahertz absorption coefficient in PLS model by correction processing for flour doped with benzoic acid
|
Table 3. Results of terahertz spectral absorption coefficient of benzoic acid-doped flour samples in LS-SVM model
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20