Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/3833#discussion_r23821631
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/classification/LogisticRegression.scala
---
@@ -205,9 +262,25 @@ class LogisticRegressionWithLBFGS
override val optimizer = new LBFGS(new LogisticGradient, new
SquaredL2Updater)
- override protected val validators =
List(DataValidators.binaryLabelValidator)
+ validators = List(DataValidators.binaryLabelValidator)
+
+ /**
+ * :: Experimental ::
+ * Set the number of possible outcomes for k classes classification
problem in
+ * Multinomial Logistic Regression.
+ * By default, it is binary logistic regression so k will be set to 2.
+ */
+ @Experimental
+ def setNumOfClasses(k: Int): this.type = {
--- End diff --
`setNumClasses`, `k`->`numClasses`
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