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[MINOR][ML][DOC] Document default value for GeneralizedLinearRegression.linkPower #17069

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[MINOR][ML][DOC] Document default value for GeneralizedLinearRegression.linkPower #17069

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2 changes: 2 additions & 0 deletions mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
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Expand Up @@ -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
*/
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