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Author

K. Pearson

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Open access Aug 2026

Z-Eigenvector Residual Recovery for Dominant Fourth-Order Structure Missed by PCA

A separation result is proved showing that, in a fourth-order-dominant regime, rank-k PCA selects nuisance directions, while successively selected fourth-order maximizing directions recover the structural subspace.

K. Pearson, Tan Zhang · 0 citations

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