Fig. 2

Curves of ROC/PRC and visualization of machine learning model parameters. A. ROC and PRC of inflammatory and nutritional indexes. The area under curve of ROC and PRC in PNI were less than 0.5 and 0.1, respectively. B. ROC and PRC of SR, RF and NB algorithm with three significant factors. C. ROC and PRC of SR, RF, NB, DT and ANN algorithm with nine significant factors. D. Decision tree classification. E. Importance of nine factors in ANN algorithm. F. visualization of ANN