Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/8399#discussion_r38047496
--- Diff: python/pyspark/ml/evaluation.py ---
@@ -85,6 +88,9 @@ def _evaluate(self, dataset):
self._transfer_params_to_java()
return self._java_obj.evaluate(dataset._jdf)
+ def isLargerBetter(self):
+ return self._java_obj.isLargerBetter()
--- End diff --
This works for current use since it's called after evaluate has been
called, but it could fail if a user calls it since the params may not have been
transferred to java yet. Call ```self._transfer_params_to_java()``` first.
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