Anchor PCA recovers a maximal invariant subspace for multi-domain data via PCA on a modified target matrix that trades off explained variance with domain agreement.
StablePCA: Distribu- tionally robust learning of shared representations from multi-source data.arXiv preprint arXiv:2505.00940, 2025
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Anchor PCA
Anchor PCA recovers a maximal invariant subspace for multi-domain data via PCA on a modified target matrix that trades off explained variance with domain agreement.