Fig. 2From: Accumulation mechanism of metabolite markers identified by machine learning between Qingyuan and Xiushui counties in Polygonatum cyrtonema HuaMachine learning methods identify characteristic metabolites. A SVM-RFE, a support vector machine—recursive feature elimination approach. B The number of decision trees and the relationship to the error rate. C Top 20 of feature metabolite results in the random forest method. D Complexheatmap of all phenylpropane metabolites in two sitesBack to article page