Github user yanboliang commented on a diff in the pull request: https://github.com/apache/spark/pull/16344#discussion_r95994801 --- Diff: mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala --- @@ -242,9 +316,9 @@ class GeneralizedLinearRegression @Since("2.0.0") (@Since("2.0.0") override val def setLinkPredictionCol(value: String): this.type = set(linkPredictionCol, value) override protected def train(dataset: Dataset[_]): GeneralizedLinearRegressionModel = { - val familyObj = Family.fromName($(family)) - val linkObj = if (isDefined(link)) { - Link.fromName($(link)) + val familyObj = Family.fromParams(this) + val linkObj = if (isDefined(link) || isDefined(linkPower)) { + Link.fromParams(this) } else { familyObj.defaultLink } --- End diff -- This code snippets are used multiple places, could we wrapper them up as a function? ``` def getFamilyAndLinkObj(params: GeneralizedLinearRegressionBase): (Family, Link) = { ...... } ```
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