From 80981fd62e562e9af9009a787b111cc1cbe85d12 Mon Sep 17 00:00:00 2001
From: "Joseph K. Bradley" <joseph@databricks.com>
Date: Sat, 25 Feb 2017 17:26:59 -0800
Subject: [PATCH] added scaladoc about default value for
 GeneralizedLinearRegression.linkPower

---
 .../spark/ml/regression/GeneralizedLinearRegression.scala       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
index fdeadaf27497..110764dc074f 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
@@ -109,6 +109,8 @@ private[regression] trait GeneralizedLinearRegressionBase extends PredictorParam
    * Param for the index in the power link function. Only applicable for the Tweedie family.
    * Note that link power 0, 1, -1 or 0.5 corresponds to the Log, Identity, Inverse or Sqrt
    * link, respectively.
+   * When not set, this value defaults to 1 - [[variancePower]], which matches the R "statmod"
+   * package.
    *
    * @group param
    */