Additional file 2.

Supplementary figure 2.png Grid optimization of the predictive power of the classifier (all groups): AUC. We exhaustively tested the two most critical parameters of the SVM’s radial basis kernel: soft-margin (C) and radius (γ). The average area under the curve (AUC) across the entire set of k-folds was chosen as a scoring function for the optimization. The optimal values correspond to C = 2 and γ = 6 · 10–4.

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Izarzugaza et al. BMC Genomics 2012 13(Suppl 4):S3   doi:10.1186/1471-2164-13-S4-S3