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. 2013 Nov 25;8(11):e78824. doi: 10.1371/journal.pone.0078824

Figure 6. Generalization error vs number of principal components.

Figure 6

Estimate of the generalization versus the number of principal components employed in the SVM. Testing error is obtained by using a nested cross-validation scheme in which the inner loop is used to select the SVM parameter, C, and the outer loop is used to estimate the generalization error.