[jira] [Resolved] (SPARK-13676) Fix mismatched default values for regParam in LogisticRegression

["Xiangrui Meng (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-13676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiangrui Meng resolved SPARK-13676.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

Issue resolved by pull request 11519
[https://github.com/apache/spark/pull/11519]

> Fix mismatched default values for regParam in LogisticRegression
> ----------------------------------------------------------------
>
>                 Key: SPARK-13676
>                 URL: https://issues.apache.org/jira/browse/SPARK-13676
>             Project: Spark
>          Issue Type: Bug
>          Components: ML, MLlib
>            Reporter: Dongjoon Hyun
>             Fix For: 2.0.0
>
>
> The default value of regularization parameter for `LogisticRegression` algorithm is different in Scala and Python. We should provide the same value.
> {code:title=Scala|borderStyle=solid}
> scala> new org.apache.spark.ml.classification.LogisticRegression().getRegParam
> res0: Double = 0.0
> {code}
> {code:title=Python|borderStyle=solid}
> >>> from pyspark.ml.classification import LogisticRegression
> >>> LogisticRegression().getRegParam()
> 0.1
> {code}



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