Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/4704#discussion_r28548306
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/feature/StandardScaler.scala ---
@@ -29,7 +29,22 @@ import org.apache.spark.sql.types.{StructField,
StructType}
/**
* Params for [[StandardScaler]] and [[StandardScalerModel]].
*/
-private[feature] trait StandardScalerParams extends Params with
HasInputCol with HasOutputCol
+private[feature] trait StandardScalerParams extends Params with
HasInputCol with HasOutputCol {
+
+ /**
+ * Whether to center the data before scaling
+ * @group param
+ */
+ val withMean: BooleanParam = new BooleanParam(this, "withMean", "Center
data with mean")
+
+ /**
+ * Whether to scale the data to have unit standard deviation
--- End diff --
Could you please state the default here too?
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