Identifying key wavenumbers that improve prediction of amylose in rice samples utilizing advanced wavenumber selection techniques

被引:23
作者
Mishra, Puneet [1 ]
Woltering, Ernst J. [1 ,2 ]
机构
[1] Wageningen Food & Biobased Res, Bornse Weilanden 9,POB 17, NL-6700 AA Wageningen, Netherlands
[2] Wageningen Univ, Hort & Prod Physiol Grp, Droevendaalsesteeg 1,POB 630, NL-6700 AP Wageningen, Netherlands
关键词
Chemometrics; Feature selection; Multi-spectral; Food chemistry; NEAR-INFRARED SPECTROSCOPY; VARIABLE SELECTION; NIR-SPECTROSCOPY;
D O I
10.1016/j.talanta.2020.121908
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This study utilizes advanced wavenumber selection techniques to improve the prediction of amylose content in grounded rice samples with near-infrared spectroscopy. Four different wavenumber selection techniques, i.e. covariate selection (CovSel), variable combination population analysis (VCPA), bootstrapping soft shrinkage (BOSS) and variable combination population analysis-iteratively retains informative variables (VCPA-IRIV), were used for model optimization and key wavenumbers selection. The results of the several wavenumber selection techniques were compared with the predictions reported previously on the same data set. All the four wavenumber selection techniques improved the predictive performance of amylose in rice samples. The best performance was obtained with VCPA, where, with only 11 wavenumbers-based model, the prediction error was reduced by 19% compared to what reported previously on the same data set. The selected wavenumbers can help in development of low-cost multi-spectral sensors for amylose prediction in rice samples.
引用
收藏
页数:4
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