http://rduin.nl/presentations/ROC%20Tutorial%20Peter%20Flach/ROCtutorialPartI.pdf
https://stats.stackexchange.com/questions/7207/roc-vs-precision-and-recall-curves
https://machinelearningmastery.com/assessing-comparing-classifier-performance-roc-curves-2/
原文：https://www.cnblogs.com/wordchao/p/9240087.html