Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pabei..19....9l&link_type=abstract
Progress in Astronomy, Vol. 19, No. 1, p. 9 - 16 (2001)
Astronomy and Astrophysics
Astronomy
2
Principal Component Analysis, Variance, Covariance Matrix, Galaxies
Scientific paper
Principal component analysis (PCA) is a main multivariate statistical method for getting principal information from observational data. It uses few new variables instead of initial parameters, in order to find out the relations among the initial parameters, without losing the main information of initial data. Especially for the case of large sample and multivariate, this method is simpler and more efficient. In the present day, PCA is applied widely in many research fields of astrophysics. The main principle and applications to astrophysics of PCA are reviewed in this paper.
Cheng Fu-zhen
Kong Xu
Li Cheng
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