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- W1671036796 abstract "The empirical covariance matrix is not necessarily the best estimator for the population covariance matrix: we describe a simple method which gives better estimates in two examples. The method models the covariance matrix using truncated PCA with white noise residuals. Jack-knife cross-validation is used to find the truncation that maximises the out-of-sample likelihood score." @default.
- W1671036796 created "2016-06-24" @default.
- W1671036796 creator A5070365953 @default.
- W1671036796 date "2005-06-07" @default.
- W1671036796 modified "2023-09-27" @default.
- W1671036796 title "Improving on the empirical covariance matrix using truncated PCA with white noise residuals" @default.
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