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Posted to issues@spark.apache.org by "Weichen Xu (JIRA)" <ji...@apache.org> on 2017/09/14 07:10:00 UTC

[jira] [Updated] (SPARK-21087) CrossValidator, TrainValidationSplit should collect all models when fitting: Scala API

     [ https://issues.apache.org/jira/browse/SPARK-21087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weichen Xu updated SPARK-21087:
-------------------------------
    Summary: CrossValidator, TrainValidationSplit should collect all models when fitting: Scala API  (was: CrossValidator, TrainValidationSplit should preserve all models after fitting: Scala API)

> CrossValidator, TrainValidationSplit should collect all models when fitting: Scala API
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-21087
>                 URL: https://issues.apache.org/jira/browse/SPARK-21087
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML
>    Affects Versions: 2.2.0
>            Reporter: Joseph K. Bradley
>
> 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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