Publication Details

Classification of Be Stars Using Feature Extraction Based on Discrete Wavelet Transform

VRÁBELOVÁ, P.; BAŘINA, D.; ŠKODA, P.; ZENDULKA, J.; VÁŽNÝ, J. Classification of Be Stars Using Feature Extraction Based on Discrete Wavelet Transform. Proceedings of conferences Datakon and Znalosti 2013. Ostrava: VŠB-Technical University of Ostrava, 2013. p. 95-102. ISBN: 978-80-248-3189-3.
Czech title
Klasifikace Be hvězd použitím extrakce příznaků založené na diskrétní vlnkové transformaci
Type
conference paper
Language
English
Authors
Vrábelová Pavla, Ing.
Bařina David, Ing., Ph.D. (DCGM)
Škoda Petr, RNDr., Ph.D.
Zendulka Jaroslav, doc. Ing., CSc. (UIFS)
Vážný Jaroslav
Keywords

Be star, stellar spectrum, feature extraction, discrete wavelettransform, DWT, classification, support vector machines, SVM

Abstract

The paper deals with classification of Be star spectra using discrete wavelet transform (DWT) and support vector machines (SVM).

Annotation
There is no known method specialized for feature extraction and classification of Be stars. In this paper, we propose several feature extraction methods based on the discrete wavelet transform (DWT). The data set is composed of spectra from the archive of the Astronomical Institute of the Academy of Sciences of the Czech Republic. The data set contains both Be and normal stars. A small segment containing the H line characteristic for Be stars is selected for feature extraction. Five different feature extraction methods based on DWT are proposed and compared with a common method of wavelet-based feature extraction from time series. For classification, the support vector machines (SVM) is used. The results are given by the accuracy of classification.
Published
2013
Pages
95–102
Proceedings
Proceedings of conferences Datakon and Znalosti 2013
ISBN
978-80-248-3189-3
Publisher
VŠB-Technical University of Ostrava
Place
Ostrava
BibTeX 
@inproceedings{BUT103544,
  author="Pavla {Vrábelová} and David {Bařina} and Petr {Škoda} and Jaroslav {Zendulka} and Jaroslav {Vážný}",
  title="Classification of Be Stars Using Feature Extraction Based on Discrete Wavelet Transform",
  booktitle="Proceedings of conferences Datakon and Znalosti 2013",
  year="2013",
  pages="95--102",
  publisher="VŠB-Technical University of Ostrava",
  address="Ostrava",
  isbn="978-80-248-3189-3",
  url="https://www.fit.vut.cz/research/publication/10416/"
}
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