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Machine learning algorithm validation with a limited sample size

Fig 6

K-Fold CV with different feature-to-sample ratios.

Sample size ranged from 14 to 446 and feature number was set accordingly to keep feature-to-sample ratios at 20, 10, 3, 2, 1, 1/2 and 1/3. A: SVM-RFE feature selection and SVM classifier. B: t-test feature selection and logistic regression classifier.

Fig 6

doi: https://doi.org/10.1371/journal.pone.0224365.g006