Adaptive stellar spectral subclass classification based on Bayesian SVMs

	Adaptive stellar spectral subclass classification based on Bayesian SVMs
	Du, Changde1,2 ; Luo, Ali1 ; Yang, Haifeng1,2,3
刊名	NEW ASTRONOMY
	2017-02-01
卷号	51 页码:51-58
关键词	Stellar spectral classification Bayesian support vector machines MCMC Data-driven
英文摘要	Stellar spectral classification is one of the most fundamental tasks in survey astronomy. Many automated classification methods have been applied to spectral data. However, their main limitation is that the model parameters must be tuned repeatedly to deal with different data sets. In this paper, we utilize the Bayesian support vector machines (BSVM) to classify the spectral subclass data. Based on Gibbs sampling, BSVM can infer all model parameters adaptively according to different data sets, which allows us to circumvent the time-consuming cross validation for penalty parameter. We explored different normalization methods for stellar spectral data, and the best one has been suggested in this study. Finally, experimental results on several stellar spectral subclass classification problems show that the BSVM model not only possesses good adaptability but also provides better prediction performance than traditional methods. (C) 2016 Published by Elsevier B.V.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ARTIFICIAL NEURAL-NETWORKS ; DIGITAL SKY SURVEY ; PRINCIPAL COMPONENT ANALYSIS ; EMISSION-LINE GALAXIES ; MACHINE ; STARS
收录类别	SCI
语种	英语
WOS记录号	WOS:000385595000008
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6902]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 3.Taiyuan Univ Sci & Technol, Sch Comp Sci & Technol, Taiyuan 030024, Peoples R China
推荐引用方式 GB/T 7714	Du, Changde,Luo, Ali,Yang, Haifeng. Adaptive stellar spectral subclass classification based on Bayesian SVMs[J]. NEW ASTRONOMY,2017,51:51-58.
APA	Du, Changde,Luo, Ali,&Yang, Haifeng.(2017).Adaptive stellar spectral subclass classification based on Bayesian SVMs.NEW ASTRONOMY,51,51-58.
MLA	Du, Changde,et al."Adaptive stellar spectral subclass classification based on Bayesian SVMs".NEW ASTRONOMY 51(2017):51-58.