Github user imatiach-msft commented on a diff in the pull request: https://github.com/apache/spark/pull/16516#discussion_r95848454 --- Diff: mllib/src/main/scala/org/apache/spark/ml/classification/LogisticRegression.scala --- @@ -91,8 +91,8 @@ private[classification] trait LogisticRegressionParams extends ProbabilisticClas @Since("2.1.0") final val family: Param[String] = new Param(this, "family", "The name of family which is a description of the label distribution to be used in the " + - s"model. Supported options: ${supportedFamilyNames.mkString(", ")}.", - ParamValidators.inArray[String](supportedFamilyNames)) + s"model (case-insensitive). Supported options: ${supportedFamilyNames.mkString(", ")}.", --- End diff -- maybe we can add an additional string param validators class then to the same params.scala file in ml folder? There should be a generic function and the params.scala file seems to be the right place.
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