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https://issues.apache.org/jira/browse/SPARK-9000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627355#comment-14627355
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Apache Spark commented on SPARK-9000:
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User 'rikima' has created a pull request for this issue:
https://github.com/apache/spark/pull/7400
> Support generic item type in PrefixSpan
> ---------------------------------------
>
> Key: SPARK-9000
> URL: https://issues.apache.org/jira/browse/SPARK-9000
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 1.5.0
> Reporter: Xiangrui Meng
> Priority: Critical
>
> In SPARK-6487, we only support Int type. It requires users to encode other
> types into integer to use PrefixSpan. We should be able to do this inside
> PrefixSpan, similar to FPGrowth. This should be done before 1.5 since it
> changes APIs.
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