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https://issues.apache.org/jira/browse/MAHOUT-886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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tom pierce updated MAHOUT-886:
------------------------------
Attachment: MAHOUT-886.patch
Keep nodes from getting multiply added (becoming own siblings). There's a
FPTree.toString() included; you can use this to log the tree structure at the
patched locations in traverseAndBuildConditionalFPTreeData to observe malformed
trees.
> FPtree nodes multiply-added (becoming siblings in tree)
> -------------------------------------------------------
>
> Key: MAHOUT-886
> URL: https://issues.apache.org/jira/browse/MAHOUT-886
> Project: Mahout
> Issue Type: Bug
> Components: Frequent Itemset/Association Rule Mining
> Affects Versions: 0.6
> Reporter: tom pierce
> Attachments: MAHOUT-886.patch
>
>
> In FPGrowth#traverseAndBuildConditionalFPTreeData, while creating a
> conditional FPtree sometimes nodes are multiply-added as children of the same
> node, becoming siblings in the conditional tree.
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