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Graphic summaries of the estimated and observed areas under the curve (AUCs) for each of the 120 models. For each combination of feature-selection method and classification algorithm, the AUCs ± 2 standard deviations are plotted. Mean AUCs obtained from 10 × 5-CV (cross-validation; black square), LPO bootstrap (black dot), and the conditional (blue circle) and mean (red cross) validation AUCs are shown.
