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An Automated Stellar Spectra Classification System Basing on Non-Parameter Regression and Adaboost
Liu Rong1; Qiao Xue-jun2; Zhang Jian-nan3; Duan Fu-qing4
2017-05-01
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
Volume37Issue:5Pages:1555-1559
AbstractWith the analysis of stellar spectra, the evolution and structure of the Milky Way galaxy is studied. Spectral classification is one of the basic tasks of stellar spectral analysis. In this paper, a method of MK classification based on non parametric regression and Adaboost for stellar spectra is proposed, and the stars are classified according to the luminosity type, spectral type as well as the spectral subtype. The spectral type of the stellar spectrum and its sub type represent the effective temperature of the star, while the luminosity type represents the luminous intensity of the star. In the same spectral type, the luminosity type reflects the variation of the shape details of the spectral line, so the classification of the photometric type must be based on the spectral type classification. The spectral type classification is transformed as a regression problem of class label, and the type and subtype of the stellar spectra are recognized with non parametric regression method. The luminosity type of the stellar spectra is recognized using Adaboost method which combines a group of K nearest neighbor classifiers. Adaboost generates a strong classifier with weighted combination of a group of weak classifiers to improve the recognition rate of the luminosity type. Experimental results validate the proposed method. The accuracy of spectral subtype recognition is up to 0. 22, and the correct rate of the luminosity type classification is 84% above. Two KNN methods are compared with Adaboost method on luminosity recognition. The results show that the recognition rate can be greatly enhanced with the Adaboost method and using KNN.
SubtypeArticle
KeywordSpectra Classification Adaboost Non-parameter Regression Luminosity
WOS HeadingsScience & Technology ; Technology
DOI10.3964/j.issn.1000-0593(2017)05-1553-05
WOS KeywordATMOSPHERIC PARAMETERS ; STARS
Indexed BySCI
Language英语
WOS Research AreaSpectroscopy
WOS SubjectSpectroscopy
WOS IDWOS:000401880000040
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8786
Collection光学天文研究部
Affiliation1.Beijing Inst Fash Technol, Base Dept, Beijing 100029, Peoples R China
2.Xian Univ Architecture & Technol, Sch Sci, Xian 710055, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Beijing Normal Univ, Coll Informat Sci & Technol, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Liu Rong,Qiao Xue-jun,Zhang Jian-nan,et al. An Automated Stellar Spectra Classification System Basing on Non-Parameter Regression and Adaboost[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2017,37(5):1555-1559.
APA Liu Rong,Qiao Xue-jun,Zhang Jian-nan,&Duan Fu-qing.(2017).An Automated Stellar Spectra Classification System Basing on Non-Parameter Regression and Adaboost.SPECTROSCOPY AND SPECTRAL ANALYSIS,37(5),1555-1559.
MLA Liu Rong,et al."An Automated Stellar Spectra Classification System Basing on Non-Parameter Regression and Adaboost".SPECTROSCOPY AND SPECTRAL ANALYSIS 37.5(2017):1555-1559.
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