A robust principal component analysis can be easily performed by computing the eigenvalues and eigenvectors of a robust estimator of the covariance or correlation matrix. In this paper the authors derive the influence functions and the corresponding asumptotic variances for these robust estimators of eigenvalues and eigenvectors. The behavior of several of these estimators is investigated by a simulation study. Finally, the use of empirical influence functions id illustrated by a real data example.
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Length: 26 pages Date of creation: 1999 Date of revision: Handle: RePEc:fth:gemame:9908
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Find related papers by JEL classification: C00 - Mathematical and Quantitative Methods - - General - - - General C60 - Mathematical and Quantitative Methods - - Mathematical Methods and Programming - - - General C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation
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