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我的代码如下h2o.auc(perf,xval = TRUE) - 这个调用返回什么?
gbm.fit.hex = h2o.gbm(x= xcols , y =1865 , training_frame = tr.hex , distribution = "bernoulli", model_id = "gbm.model" , key = "gbm.model.key" , ntrees = gbm.trees , max_depth = gbm.depth , min_rows = gbm.min.rows , learn_rate = gbm.learn.rate , nbins = 20 , balance_classes = gbm.balance , nfolds = gbm.folds)
perf <- h2o.performance(gbm.fit.hex , tr.hex) a = h2o.auc(perf , xval = TRUE)
什么的AUC调用返回?它是否返回训练数据集或交叉验证结果的AUC?