A new automated spectral feature extraction method and its application in spectral classification and defective spectra recovery
A new automated spectral feature extraction method and its application in spectral classification and defective spectra recovery
复制标题
一种新的自动化光谱特征提取方法及其在光谱分类和缺陷光谱恢复中的应用
DOI:
10.1093/mnras/stw2894
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发表时间:
2017-03
影响因子:
4.8
通讯作者:
Luo A-Li
中科院分区:
文献类型:
--
作者:
Wang Ke;Guo Ping;Luo A-Li
Spectral feature extraction is a crucial procedure in automated spectral analysis. This procedure starts from the spectral data and produces informative and non-redundant features, facilitating the subsequent automated processing and analysis with machine-learning and data-mining techniques. In this paper, we present a new automated feature extraction method for astronomical spectra, with application in spectral classification and defective spectra recovery. The basic idea of our approach is to train a deep neural network to extract features of spectra with different levels of abstraction in different layers. The deep neural network is trained with a fast layer-wise learning algorithm in an analytical way without any iterative optimization procedure. We evaluate the performance of the proposed scheme on real-world spectral data. The results demonstrate that our method is superior regarding its comprehensive performance, and the computational cost is significantly lower than that for other methods. The proposed method can be regarded as a new valid alternative general-purpose feature extraction method for various tasks in spectral data analysis.
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影响因子:
4.8
作者:
Graff, Philip;Feroz, Farhan;Lasenby, Anthony
通讯作者:
Lasenby, Anthony
DOI:
10.5555/1756006.1953039
发表时间:
2010-03
期刊:
J. Mach. Learn. Res.
影响因子:
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通讯作者:
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DOI:
--
发表时间:
2011
期刊:
--
影响因子:
--
作者:
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通讯作者:
A. Krizhevsky;Geoffrey E. Hinton
影响因子:
6.5
作者:
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