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https://issues.apache.org/jira/browse/SPARK-31681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen updated SPARK-31681:
---------------------------------
      Docs Text: In Spark 3.0, a multiclass logistic regression in Pyspark will 
now (correctly) return LogisticRegressionSummary, not the subclass 
BinaryLogisticRegressionSummary. The BinaryLogisticRegressionSummary would not 
work in this case anyway.
    Description: 
{code:java}
    def evaluate(self, dataset):
        ......
        java_blr_summary = self._call_java("evaluate", dataset)
        return BinaryLogisticRegressionSummary(java_blr_summary)
{code}

We should return LogisticRegressionSummary instead of 
BinaryLogisticRegressionSummary for multiclass LogisticRegression

  was:

{code:java}
    def evaluate(self, dataset):
        ......
        java_blr_summary = self._call_java("evaluate", dataset)
        return BinaryLogisticRegressionSummary(java_blr_summary)
{code}

We should return LogisticRegressionSummary instead of 
BinaryLogisticRegressionSummary for multiclass LogisticRegression


> Python multiclass logistic regression evaluate should return 
> LogisticRegressionSummary
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-31681
>                 URL: https://issues.apache.org/jira/browse/SPARK-31681
>             Project: Spark
>          Issue Type: Bug
>          Components: ML, PySpark
>    Affects Versions: 3.1.0
>            Reporter: Huaxin Gao
>            Priority: Minor
>              Labels: release-notes
>
> {code:java}
>     def evaluate(self, dataset):
>         ......
>         java_blr_summary = self._call_java("evaluate", dataset)
>         return BinaryLogisticRegressionSummary(java_blr_summary)
> {code}
> We should return LogisticRegressionSummary instead of 
> BinaryLogisticRegressionSummary for multiclass LogisticRegression



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