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https://issues.apache.org/jira/browse/SPARK-8998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-8998:
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Assignee: Zhang JiaJin (was: Apache Spark)
> Collect enough frequent prefixes before projection in PrefixSpan
> ----------------------------------------------------------------
>
> Key: SPARK-8998
> URL: https://issues.apache.org/jira/browse/SPARK-8998
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 1.5.0
> Reporter: Xiangrui Meng
> Assignee: Zhang JiaJin
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> The implementation in SPARK-6487 might have scalability issues when the
> number of frequent items is very small. In this case, we can generate
> candidate sets of higher orders using Apriori-like algorithms and count them,
> until we collect enough prefixes.
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