Title:
METHOD AND SYSTEM FOR EXTRACTING NET SIGNAL IN NEAR-INFRARED SPECTRUM
Document Type and Number:
WIPO Patent Application WO/2023/123329
Kind Code:
A1
Abstract:
A method and system for extracting a net signal in a near-infrared spectrum, relating to the technical field of near-infrared spectrums. The method for extracting a net signal comprises the following steps: collecting a sample, and acquiring original near-infrared spectral data of the sample; measuring the content of an analyte of interest by using a chemical measurement method, and using the content as a response variable; and applying different spectral preprocessing methods and a combination of the different spectral preprocessing methods to the original spectral data, finding an optimal preprocessing solution by using 10-fold cross-validation; and selecting a band related to the response variable by using a LASSO algorithm. By extracting a net analyte signal in a near-infrared spectrum to reduce the number of principal components in an optimal partial least squares model, the accuracy and robustness of the model are improved while the complexity of the model is reduced; and the introduction of a preprocessing solution changes directions of near-infrared spectral disturbances, so that projections of spectral disturbances in a net signal direction are reduced.
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Inventors:
PAN TIANHONG (CN)
LI MENGHU (CN)
CHEN QI (CN)
CHEN SHAN (CN)
FAN YUAN (CN)
LI MENGHU (CN)
CHEN QI (CN)
CHEN SHAN (CN)
FAN YUAN (CN)
Application Number:
PCT/CN2021/143614
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
UNIV ANHUI (CN)
International Classes:
G01N21/359
Foreign References:
| CN105203498A | 2015-12-30 | |||
| CN110006844A | 2019-07-12 | |||
| CN111965137A | 2020-11-20 | |||
| CN104255118A | 2015-01-07 | |||
| CN103239239A | 2013-08-14 | |||
| US6697654B2 | 2004-02-24 |
Other References:
GENG YING, XIANG BING-REN, HE LAN: "Study on the Application of NAS-Based Algorithm in the NIR Model Optimization", SPECTROSCOPY AND SPECTRAL ANALYSIS, vol. 35, no. 10, 1 October 2015 (2015-10-01), pages 2730 - 2733, XP093074821
BLANCO, M. CASTILLO, M. PEINADO, A. BENEYTO, R.: "Determination of low analyte concentrations by near-infrared spectroscopy: Effect of spectral pretreatments and estimation of multivariate detection limits", ANALYTICA CHIMICA ACTA, ELSEVIER, AMSTERDAM, NL, vol. 581, no. 2, 9 January 2007 (2007-01-09), AMSTERDAM, NL , pages 318 - 323, XP022209563, ISSN: 0003-2670, DOI: 10.1016/j.aca.2006.08.018
BLANCO, M. CASTILLO, M. PEINADO, A. BENEYTO, R.: "Determination of low analyte concentrations by near-infrared spectroscopy: Effect of spectral pretreatments and estimation of multivariate detection limits", ANALYTICA CHIMICA ACTA, ELSEVIER, AMSTERDAM, NL, vol. 581, no. 2, 9 January 2007 (2007-01-09), AMSTERDAM, NL , pages 318 - 323, XP022209563, ISSN: 0003-2670, DOI: 10.1016/j.aca.2006.08.018
Attorney, Agent or Firm:
BEIJING DONGFANGSHENGFAN IP AGENCY CO., LTD. (CN)
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