Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/16344#discussion_r97219484
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
---
@@ -57,30 +57,72 @@ private[regression] trait
GeneralizedLinearRegressionBase extends PredictorParam
final val family: Param[String] = new Param(this, "family",
"The name of family which is a description of the error distribution
to be used in the " +
s"model. Supported options: ${supportedFamilyNames.mkString(", ")}.",
- ParamValidators.inArray[String](supportedFamilyNames.toArray))
+ ParamValidators.inArray[String](supportedFamilyNames))
/** @group getParam */
@Since("2.0.0")
def getFamily: String = $(family)
/**
+ * Param for the power in the variance function of the Tweedie
distribution which provides
+ * the relationship between the variance and mean of the distribution.
+ * Used only for the Tweedie family.
--- End diff --
Nit: ```Only applicable for "tweedie" family.``` should be better?
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