Tensorflowのevaluate functionは、統計情報の束を出してくれる:Tensorflowは 'positive_threshold_0.500000_mean'と何を意味していますか?
accuracy: 0.915224
accuracy/baseline_target_mean: 0.220896
accuracy/threshold_0.500000_mean: 0.915224
auc: 0.937926
global_step: 200
labels/actual_target_mean: 0.220896
labels/prediction_mean: 0.203677
loss: 0.247065
precision/positive_threshold_0.500000_mean: 0.991379
recall/positive_threshold_0.500000_mean: 0.621622
baseline_target_mean
は(精度後)とpositive_threshold_0.500000_mean
(リコールと精度の後に)何を意味するのですか?