Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/3702#discussion_r22232433
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.scala
---
@@ -28,9 +28,28 @@ import org.apache.spark.rdd.{RDD, UnionRDD}
* Evaluator for binary classification.
*
* @param scoreAndLabels an RDD of (score, label) pairs.
+ * @param numBins if greater than 0, then the curves (ROC curve, PR curve)
computed internally
+ * will be down-sampled to this many "bins". This is useful because the
curve contains a
--- End diff --
Indent comment? Also, looking at this, I like having the explanation, but
it might be nice to format as:
Quick description.
Default value.
Caveat about approximation
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