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Performance comparisons (MetaPCAs, PCA and JIVE) of the effects on the number of studies for estimating true eigenvector. ‘SV’, ‘SSC’ refer to MetaPCA (SV) and MetaPCA (SSC). ‘Single’ and ‘Pooled’ represents standard PCA of each individual study and standard PCA of pooled studies (combining all datasets by features), respectively (A: C = 0.1, B: C = 0.5, C and D: C = 1, where C is the noise level)
