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https://issues.apache.org/jira/browse/SPARK-5424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14297949#comment-14297949
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Apache Spark commented on SPARK-5424:
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User 'mengxr' has created a pull request for this issue:
https://github.com/apache/spark/pull/4281
> Make the new ALS implementation take generic ID types
> -----------------------------------------------------
>
> Key: SPARK-5424
> URL: https://issues.apache.org/jira/browse/SPARK-5424
> Project: Spark
> Issue Type: Improvement
> Components: MLlib, Spark ML
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> The new implementation uses local indices of users and items. So the input
> user/item type could be generic, at least specialized for Int and Long. We
> can expose the generic interface as a developer API.
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