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https://issues.apache.org/jira/browse/SPARK-9000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14649812#comment-14649812
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Xiangrui Meng commented on SPARK-9000:
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Hey [~rikima], since we are close to the feature freeze deadline and there has
been some refactoring in PrefixSpan implementation. I asked Feynman to send
another PR based on yours. He did the factoring, so it would be easier for him
to merge your changes. Please help review his PR if you are available. Thanks!
> 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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