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Cyril de Vogelaere commented on SPARK-10678: -------------------------------------------- I hadn't seen this issue as I created mine. I have finished an implementation which specialise Prefix-span for single-item patterns, using a CP solver. Here is the link the the issue I created, which proposes other improvement along side this particular one. https://issues.apache.org/jira/browse/SPARK-20179 Any advice you have for me would be welcome, since I'm a newbie at contributing to Spark > Specialize PrefixSpan for single-item patterns > ---------------------------------------------- > > Key: SPARK-10678 > URL: https://issues.apache.org/jira/browse/SPARK-10678 > Project: Spark > Issue Type: Improvement > Components: MLlib > Affects Versions: 1.6.0 > Reporter: Xiangrui Meng > > We assume the input itemsets are multi-item in PrefixSpan, e.g., (ab)(cd). In > some use cases, all itemsets are single-item, e.g., abcd. In this case, our > implementation has overhead remembering the boundaries between itemsets. We > could detect it and put specialized implementation for this use case. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org