Figure 5. Verification of the classifier by SVM. (A) ROC curve to evaluate the discrimination ability of the classifier constructed by the SVM algorithm to different ESCC patients with LNM from the ones without LNM in the TCGA dataset. (B) ROC curve to evaluate the discrimination ability of the classifier constructed by the SVM algorithm to different ESCC patients with LNM from the ones without LNM in GSE43732.