Fig. 2

Best classifier learning curves. From top left to bottom right, best classifier model learning curves for the inner ear (linear SVM), middle ear (logistic regression), outer ear (linear SVM), and mastoid (decision tree). The curves show the training and validation accuracy as a function of the training set size. Performance is evaluated by 5-fold cross validation. The green (red) curves indicate performance on the training (cross-validation) report sets. Each data point (circles) is the average accuracy value over the 5 folds. The shaded region indicates the standard deviation