混合气体红外光谱支持向量机分析的新方法

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Abstract A new method of infrared spectrum analysis based on support vector machine(SVM) for mixture gas was proposed. The kernel function in SVM was used to map the seriously overlapping absorption spectrum into high-dimensional space,and after transformation,the high-dimensional data could be processed in the original space,so the regression calibration model was established,then the regression calibration model with was applied to analyze the concentration of component gas. Meanwhile it was proved that the regression calibration model with SVM also could be used for component recognition of mixture gas. The method was applied to the analysis of different data samples. Some factors such as scan interval,range of the wavelength,kernel function and penalty coefficient C that affect the model were discussed. Experimental results show that the component concentration maximal Mean AE is 0.132%,and the component recognition accuracy is higher than 94%. The problems of overlapping absorption spectrum,using the same method for qualitative and quantitative analysis,and limit number of training sample,were solved. The method could be used in other mixture gas infrared spectrum analyses,promising theoretic and application values.

Key words：Support vector machine;Regression;Calibration model;Infrared spectrum;Quantitative analysis;Qualitative analysis

Received: 2005-12-26 Accepted: 2006-05-08

ZTFLH:	TE642
	TH744.4

Corresponding Authors: BAI Peng E-mail: bai-peng410@sohu.com

Cite this article:

BAI Peng,XIE Wen-jun,LIU Jun-hua. New Method of Mixed Gas Infrared Spectrum Analysis Based on SVM[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1323-1327.

URL:

https://www.gpxygpfx.com/EN/Y2007/V27/I07/1323

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