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Flow of ML analysis. Abbreviations: PSD = poststroke depression; Imp = patients showing improvement in PSD symptoms; NoImp = patients showing no improvement in PSD symptoms; SVM_L = linear support vector machine; SVM_R = support vector machine with radial basis function kernel; KNN = k-nearest neighbors; RF = random forest; VE = voting ensemble; AUC = area under the curve; ROC = receiver operating characteristic.
