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Title
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Robust principal component analysis based on pairwise correlation estimators
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Author
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Abstract
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| Principal component analysis tries to explain and simplify the structure of multivariate data. For standardized variables, these principal components correspond to the eigenvectors of their correlation matrix. To obtain a robust principal components analysis, we estimate this correlation matrix componentwise by using robust pairwise correlation estimates. We show that the approach based on pairwise correlation estimators does not need a majority of outlier-free observations which becomes very useful for high dimensional problems. We further demonstrate that the "bivariate trimming" method especially works well in this setting. |
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Language
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English
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Source (journal)
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COMPSTAT'2010: 19TH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STATISTICS
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Source (book)
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19th International Conference on Computational Statistics, (COMPSTAT'2010), AUG 22-27, 2010, Paris, FRANCE
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Publication
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Heidelberg
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Physica-verlag gmbh & co
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2010
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ISBN
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978-3-7908-2603-6
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Volume/pages
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(2010)
, p. 573-580
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ISI
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000395720500059
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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