Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/19072#discussion_r135951191
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala
---
@@ -1471,6 +1471,14 @@ sealed trait LogisticRegressionSummary extends
Serializable {
/** Returns weighted averaged f1-measure. */
@Since("2.3.0")
def weightedFMeasure: Double = multiclassMetrics.weightedFMeasure(1.0)
+
+ /** Convenient method for casting to binary logistic regression summary
*/
--- End diff --
Please document that this throws an Exception if the summary is not a
binary summary.
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