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Following discussions in #5141 we may want to collapse RandomizedPCA as an alternative solver into PCA with a svd_solver='auto'
that would use randomized_svd
whenever n_components + n_oversamples < 0.8 * min(n_samples, n_features)
.
This reflects the implementation of fbpca. People may not know that RandomizedPCA exists or when it makes sense to use it.
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