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https://issues.apache.org/jira/browse/SPARK-15771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yanbo Liang updated SPARK-15771:
--------------------------------
    Description: 
Since SPARK-15617 deprecated {{precision}} in 
{{MulticlassClassificationEvaluator}}, many ML examples broken.
{code}
pyspark.sql.utils.IllegalArgumentException: 
u'MulticlassClassificationEvaluator_4c3bb1d73d8cc0cedae6 parameter metricName 
given invalid value precision.'
{code}
We should use {{accuracy}} to replace {{precision}} in these examples.

  was:Since SPARK-15617 deprecated {{precision}} in 
{{MulticlassClassificationEvaluator}}, many ML examples broken. We should use 
{{accuracy}} to replace {{precision}} in these examples. 


> Many ML examples broken since we deprecated `precision` in 
> MulticlassClassificationEvaluator
> --------------------------------------------------------------------------------------------
>
>                 Key: SPARK-15771
>                 URL: https://issues.apache.org/jira/browse/SPARK-15771
>             Project: Spark
>          Issue Type: Bug
>          Components: Examples, ML
>            Reporter: Yanbo Liang
>
> Since SPARK-15617 deprecated {{precision}} in 
> {{MulticlassClassificationEvaluator}}, many ML examples broken.
> {code}
> pyspark.sql.utils.IllegalArgumentException: 
> u'MulticlassClassificationEvaluator_4c3bb1d73d8cc0cedae6 parameter metricName 
> given invalid value precision.'
> {code}
> We should use {{accuracy}} to replace {{precision}} in these examples.



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