Method and device for selecting histidine terahertz absorption spectrum wavelength based on differential evolution

Abstract

The invention relates to a method and a device for selecting histidine terahertz absorption spectrum wavelength based on differential evolution. The method comprises the following steps of firstly, performing differential-based mutation operation and crossing operation on an initial population, so as to obtain a crossing population; respectively utilizing the initial population and the crossing population to select from the terahertz absorption spectrum of a histidine sample, and utilizing a constructed fitness function to respectively calculate the fitness of each individual of the initial population and the crossing population; reserving the individual with higher fitness, so as to obtain a new generation of population; finally, using the new generation of population as a new initial population to perform evolution and iteration, until an evolution algebra reaches the setting threshold value, and selecting the individual with highest fitness value in the final population as the selected optimal solution of the histidine terahertz absorption spectrum wavelength. The method has the advantage that by performing gradual-point depth selection on the terahertz absorption spectrum of the histidine sample, the useful information is selected, so as to obviously improve the accuracy of quantitative analysis, and obtain a good application effect.

Description

technical field [0001] The invention relates to a histidine terahertz absorption spectrum wavelength selection method and device based on differential evolution, and belongs to the technical field of terahertz spectrum detection. Background technique [0002] In the quantitative analysis of terahertz absorption spectra of histidine samples, the original terahertz absorption spectra of histidine samples obtained through experiments usually cover a wide frequency band and contain a large number of wavelength point data, including not only the signal-to-noise ratio Higher useful data also includes noise data with low signal-to-noise ratio and redundant data that is not characteristic of any component. If the original absorption spectrum is directly used for quantitative analysis, it will inevitably lead to high errors, so appropriate selection is required . Since the absorption spectrum is composed of a series of wavelength point data, the selection of the absorption spectrum ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for selecting the wavelength of histidine terahertz absorption spectrum based on differential evolution, so as to solve the problem that the current wavelength selection of histidine terahertz absorption spectrum is inappropriate and leads to relatively large errors in quantitative analysis

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