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Confusion matrix and feature importance of extremely randomized trees classifier in binary classification settings. (a) Confusion matrices of TE-SE, TE-SY, and SE-SY classifiers, respectively. (b) Feature importance graph in the same condition. Importance values of 248 features are sorted in descending order. The vertical line shows the 1st quartile feature. TE, Tae-Eum type; SE, So-Eum type; SY, So-Yang type.
