Cyril de Vogelaere created SPARK-20322:
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Summary: 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
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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