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-rw-r--r--mllib/src/main/scala/org/apache/spark/mllib/feature/ChiSqSelector.scala2
1 files changed, 1 insertions, 1 deletions
diff --git a/mllib/src/main/scala/org/apache/spark/mllib/feature/ChiSqSelector.scala b/mllib/src/main/scala/org/apache/spark/mllib/feature/ChiSqSelector.scala
index 9cc2d0ffca..5f8c1dea23 100644
--- a/mllib/src/main/scala/org/apache/spark/mllib/feature/ChiSqSelector.scala
+++ b/mllib/src/main/scala/org/apache/spark/mllib/feature/ChiSqSelector.scala
@@ -108,7 +108,7 @@ class ChiSqSelectorModel (val selectedFeatures: Array[Int]) extends VectorTransf
* (ordered by statistic value descending)
*/
@Experimental
-class ChiSqSelector (val numTopFeatures: Int) {
+class ChiSqSelector (val numTopFeatures: Int) extends Serializable {
/**
* Returns a ChiSquared feature selector.