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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/11/01 13:51:00 UTC

[jira] [Assigned] (SPARK-21088) CrossValidator, TrainValidationSplit should collect all models when fitting: Python API

     [ https://issues.apache.org/jira/browse/SPARK-21088?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-21088:
------------------------------------

    Assignee:     (was: Apache Spark)

> CrossValidator, TrainValidationSplit should collect all models when fitting: Python API
> ---------------------------------------------------------------------------------------
>
>                 Key: SPARK-21088
>                 URL: https://issues.apache.org/jira/browse/SPARK-21088
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML, PySpark
>    Affects Versions: 2.2.0
>            Reporter: Joseph K. Bradley
>            Priority: Major
>
> In pyspark:
> We add a parameter whether to collect the full model list when CrossValidator/TrainValidationSplit training (Default is NOT, avoid the change cause OOM)
> Add a method in CrossValidatorModel/TrainValidationSplitModel, allow user to get the model list
> CrossValidatorModelWriter add a “option”, allow user to control whether to persist the model list to disk.
> Note: when persisting the model list, use indices as the sub-model path



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