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https://issues.apache.org/jira/browse/SPARK-5598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14308692#comment-14308692
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Sean Owen commented on SPARK-5598:
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[~mengxr] No, no other tool could usefully read such a PMML file. The only
argument for it would be consistency: you probably need *some* file to hold
some metadata about the model, so, you could just use PMML rather than also
invent another format for that too.
The actual data can't feasibly be serialized in PMML since it would be far too
large as XML. I'm not suggesting that text-based serialization of the vectors
should be used; I was pointing more to the PMML container idea.
Yes, if this only concerns data that will only be written/read by Spark, and is
not intended for export, there isn't any value at all in PMML. I thought this
might be covering model export, meaning, for some kind of external consumption.
In that case, there's no good answer, but at least reusing PMML for the
container could have small value.
> Model import/export for ALS
> ---------------------------
>
> Key: SPARK-5598
> URL: https://issues.apache.org/jira/browse/SPARK-5598
> Project: Spark
> Issue Type: Sub-task
> Components: MLlib
> Affects Versions: 1.3.0
> Reporter: Joseph K. Bradley
> Assignee: Xiangrui Meng
>
> Please see parent JIRA for details on model import/export plans.
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