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Posted to issues@spark.apache.org by "Martin Liesenberg (JIRA)" <ji...@apache.org> on 2014/11/26 11:26:12 UTC

[jira] [Commented] (SPARK-4587) Model export/import

    [ https://issues.apache.org/jira/browse/SPARK-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14225997#comment-14225997 ] 

Martin Liesenberg commented on SPARK-4587:
------------------------------------------

There has been some discussion in SPARK-1406

> Model export/import
> -------------------
>
>                 Key: SPARK-4587
>                 URL: https://issues.apache.org/jira/browse/SPARK-4587
>             Project: Spark
>          Issue Type: New Feature
>          Components: ML, MLlib
>            Reporter: Xiangrui Meng
>            Priority: Critical
>
> This is an umbrella JIRA for one of the most requested features on the user mailing list. Model export/import can be done via Java serialization. But it doesn't work for models stored distributively, e.g., ALS and LDA. Ideally, we should provide save/load methods to every model. PMML is an option but it has its limitations. There are couple things we need to discuss: 1) data format, 2) how to preserve partitioning, 3) data compatibility between versions and language APIs, etc.



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