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Posted to dev@mahout.apache.org by "tom pierce (Updated) (JIRA)" <ji...@apache.org> on 2011/12/11 21:02:42 UTC

[jira] [Updated] (MAHOUT-921) FPG uses a lot of boxed primitives - this patch eliminates a bunch of List

     [ https://issues.apache.org/jira/browse/MAHOUT-921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

tom pierce updated MAHOUT-921:
------------------------------

    Attachment: MAHOUT-921.patch

Note patch assumes MAHOUT-920 has been applied!
                
> FPG uses a lot of boxed primitives - this patch eliminates a bunch of List<Integer> 
> ------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-921
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-921
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Frequent Itemset/Association Rule Mining
>    Affects Versions: 0.6
>            Reporter: tom pierce
>            Priority: Minor
>         Attachments: MAHOUT-921.patch
>
>
> TransactionTree uses List<Integer> internally and as part of its API; this patch changes that and pushes the use of List<Integer> down to FPGrowth.java.  This can be converted if the perf bug can be fixed (MAHOUT-890).  I will also provide an alternate base FPGrowth implementation.
> Please note that this patch assumes the patch attached to MAHOUT-920 has already been applied.

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