Method for identifying years of Luzhou-flavor liquor through three-dimensional fluorescence spectrum combined with non-negative matrix factorization

A non-negative matrix decomposition, Luzhou-flavor liquor technology, applied in the field of classification, can solve problems such as the influence of measurement stability, and achieve the effects of simple operation, less sample consumption, and high detection sensitivity

Inactive Publication Date: 2016-01-06
JIANGNAN UNIV
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Problems solved by technology

Most of the above methods are restricted by uncontrollable factors, so the stability of the measurement is affected

Method used

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  • Method for identifying years of Luzhou-flavor liquor through three-dimensional fluorescence spectrum combined with non-negative matrix factorization
  • Method for identifying years of Luzhou-flavor liquor through three-dimensional fluorescence spectrum combined with non-negative matrix factorization
  • Method for identifying years of Luzhou-flavor liquor through three-dimensional fluorescence spectrum combined with non-negative matrix factorization

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Experimental program
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Embodiment example

[0034] Implementation case: Classification and identification of the year of a certain brand of Luzhou-flavor liquor.

[0035] (1) Use the fluorescence spectrometer FLS920 to measure the three-dimensional fluorescence spectra of three original years and weighted years of a certain brand of Luzhou-flavor liquor:

[0036] a. Sample preparation: collect 10-year, 20-year, and 30-year-old original wine of a certain brand of Luzhou-flavor liquor, mix the original wine of the three years in different proportions, multiply the year and the corresponding percentage and add them up to get the result Results are taken as weighted years. The specific formula is:

[0037] Y=10a+20b+30c, (1)

[0038] Where Y represents the weighted year, a, b, and c represent the percentage of 10-year, 20-year, and 30-year liquor respectively.

[0039] Select the weighted year as 15 years, 20 years and 25 years of liquor samples as 10, 16 and 11 samples respectively, a total of 40 samples.

[0040] b. S...

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Abstract

The invention discloses a method for identifying years of Luzhou-flavor liquor through three-dimensional fluorescence spectrum combined with non-negative matrix factorization and belongs to the technical field of liquor identification. The method comprises the steps that firstly, a fluorescence spectrophotometer is used for measuring three-dimensional fluorescence spectrum charts of the Luzhou-flavor liquor of different years, and obtaining three-dimensional fluorescence spectrum data; then adopting a multiplicative non-negative matrix factorization method for decomposing a spectrum data matrix, and treating an obtained coefficient matrix as characteristic parameters of a spectrum matrix; then treating the characteristic parameters as input of a support vector machine, using a cross validation method for searching for the optimum parameter of the support vector machine, establishing a prediction model under the optimum parameter, and achieving classified identification on the Luzhou-flavor liquor of different years. By means of the method, support is provided for identification and development technologies of aged liquor.

Description

technical field [0001] A method for identifying the age of Luzhou-flavor liquor by combining three-dimensional fluorescence spectroscopy with non-negative matrix decomposition. The special feature of this method is that the spectral data matrix is ​​decomposed by the multiplicative iterative non-negative matrix decomposition method, and the obtained coefficient matrix is ​​used as the characteristic of the spectrum The parameter, combined with the support vector machine, can better realize the classification and identification of the year of Luzhou-flavor liquor, and belongs to the technical field of liquor identification. Background technique [0002] Vintage wine was very popular abroad at first, mainly used in wine, whiskey, brandy and other liquors. There is no specific standard for the vintage of baijiu. At present, it is more popular to mix several kinds of vintage wines in proportion, and use their weighted years as the vintage of the baijiu vintage. In order to ensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 陈国庆吴亚敏朱拓徐瑞煜朱纯朱焯炜
Owner JIANGNAN UNIV
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