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. 2020 Jun 10;15(6):e0232296. doi: 10.1371/journal.pone.0232296

Fig 4.

Fig 4

Simulation results for recovery of the true loading matrix (left panel) and prediction of brain age for unseen subjects (right panel) as the number of training subjects, N, increases. We note that the introduction of regularity constraints (e.g., non-negativity or orthonormality) on the loading matrix leads to improvement in performance.