[jira] [Updated] (SPARK-20322) MinPattern length in PrefixSpan

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-20322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon updated SPARK-20322:
---------------------------------
    Labels: bulk-closed  (was: )

> MinPattern length in PrefixSpan
> -------------------------------
>
>                 Key: SPARK-20322
>                 URL: https://issues.apache.org/jira/browse/SPARK-20322
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>    Affects Versions: 2.1.0
>            Reporter: Cyril de Vogelaere
>            Priority: Trivial
>              Labels: bulk-closed
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> The current implementation already diposes of a maxPatternLength parameter.
> It might be nice to add a similar minPatternLength parameter. 
> This would allow user to better control the solutions received, and lower the amount of memory needed to store the solutions in the driver.
> This can be implemented as a simple check before adding a solution to the solution list, no difference in performance should be observable.
> I'm proposing this fonctionality here, if it looks interesting to other people, I will implement it along with tests to verify it's implementation.



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