Abstract：In M star population, some special objects, which may be of magnetic activity, may be giant stars, or may be of other rare properties, are very important for the follow-up observation and the scientific research on galactic structure and evolution. For local bias of M-type star spectral characteristic lines contained in subspace, a late-type star spectra outlier data mining system is given in the present paper. Firstly, for the sample of M stellar spectral characteristic lines indices, its distribution characteristics in attribute spaces are measured by using the sparse factor and sparsity coefficient, and then this sample is discretized and dimension-reduced to the spectral subspace. Secondly, local outlier subspaces are extracted by PSO (particle swarm optimization) algorithm and identified. Additionally, the effects of sparse coefficient and sparse factor on the number of outliers are discussed by experiments on the sample of SDSS M stellar spectral line index set, and the outliers are compared with spectral type provided by SDSS. In this way, the feasibility and value of this system were validated.
蔡江辉，杨海峰，赵旭俊，张继福* . 一种晚型天体光谱离群数据挖掘系统 [J]. 光谱学与光谱分析, 2014, 34(05): 1421-1424.
CAI Jiang-hui, YANG Hai-feng, ZHAO Xu-jun, ZHANG Ji-fu* . A Late-Type Star Spectra Outlier Data Mining System . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(05): 1421-1424.
[1] Christopher P Ahn，Rachael Alexandroff，Carlos Allende Prieto，et al. Astrophysical Journal Supplement, 2014, 211(17): 16. [2] Cui Xiangqun, Zhao Yongheng, Chu Yaoquan, et al. Research in Astronomy and Astrophysics, 2012, 12(9): 1197. [3] Luo Ali, Zhang Haotong, Zhao Yongheng, et al. Research in Astronomy and Astrophysics, 2012, 12(9): 1243. [4] Brescia Massimo, Longo Giuseppe. Nuclear Instruments and Methods in Physics Research A, 2013, 720(8): 92. [5] Casini R, Ramos A A; Lites B W, et al. The Astrophysical Journal, 2013, 773(8): 180. [6] Navarro S G, Corradi R L M, Mampaso A. Astronomy & Astrophysics, 2012, 538(A76)：14. [7] Meusinger H, Schalldach P, Scholz R D. et al. Astronomy & Astrophysics, 2012, 541(A77): 27. [8] Almeida J S, Prieto C A. The Astrophysical Journal, 2013, 763(1): 50. [9] Adam Rogers，Jason D Fiege. The Astrophysical Journal, 2011, 727(2): 80. [10] Wei Peng，Luo Ali，Li Yinbi，et al. Monthly Notices of the Royal Astronomical Society, 2013, 431(3): 1800. [11] ZHANG Ji-fu, JIANG Yi-yong, HU Li-hua, et al(张继福，蒋义勇，胡立华，等). Acta Automatica Sinica(自动化学报)，2008，34(9)：1060. [12] Graham M J，Djorgovski S G，Mahabal A A, et al. Monthly Notices of the Royal Astronomical Society, 2013, 431(3): 2371. [13] Cai Jiang-hui, Zhao Xu-jun, Sun Shi-wei. Research in Astronomy and Astrophysics, 2013, 13(3): 334. [14] Zhang Jifu，Jiang Yiyong，Chang Kaihsiung，et al. Pattern Recognition Letters, 2009, 30(15): 1434.
