paddle_trainer.INFO里auc的计算机制？
Created by: wangsouc
MPI cluster训练，请教一下__auc_evaluator_0__的Eval和CurrentEval的计算机制。 I0612 15:12:50.297226 18323 TrainerInternal.cpp:165] Batch=2760 samples=11304960 AvgCost=0.113212 CurrentCost=0.109198 Eval: auc_evaluator_0=0.7042 classification_error_evaluator=0.02633 CurrentEval: auc_evaluator_0=0.727945 classification_error_evaluator=0.0255005