Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/12922#issuecomment-217803268
Yeah given how `BinaryClassificationEvaluator` works now, I don't think we
could add accuracy, as it depends on picking a threshold for the classifier.
Right now it only works with "global" metrics like AUC. @MLnick am I missing
something there ... or is the conclusion maybe that that is another issue,
allowing evaluation of a classifier that has already fixed a threshold?
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