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https://issues.apache.org/jira/browse/MAHOUT-157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979725#comment-13979725
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Amanpreet Singh Saini commented on MAHOUT-157:
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Hey Robin, Regarding your comment dated 07/Sep/09 06:32 
I know its been a long time since the post, but i actually wanted to use 
pfpgrowth on mahout without closing of the itemsets.
For it, I downloaded your source and tried to interpret it and initially i 
thought that the issue was in FPGrowth.generateSinglePathPatterns() as you are 
adding the entire conditional FP Tree in the frequentPatterns. 
For eg: if the conditional fp tree had [f:3 c:3 a:3 m:3], then this method 
makes the pattern [f,c,a,m | 3] and inserts it into the FrequentPatternMaxHeap. 
I thought the problem was not generating all the combinations here but it seems 
that i couldn't able to understand the code correctly.
Could you please just lead me to the point(s) or code snippet(s) where the 
closure is being performed so that i could test on how to remove this closure.

Thanks,
Aman

> Frequent Pattern Mining using Parallel FP-Growth
> ------------------------------------------------
>
>                 Key: MAHOUT-157
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-157
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Frequent Itemset/Association Rule Mining
>    Affects Versions: 0.2
>            Reporter: Robin Anil
>            Assignee: Robin Anil
>             Fix For: 0.2
>
>         Attachments: MAHOUT-157-August-17.patch, MAHOUT-157-August-24.patch, 
> MAHOUT-157-August-31.patch, MAHOUT-157-August-6.patch, 
> MAHOUT-157-Combinations-BSD-License.patch, 
> MAHOUT-157-Combinations-BSD-License.patch, 
> MAHOUT-157-CompactTransactionMapperFormat.patch, MAHOUT-157-Oct-1.patch, 
> MAHOUT-157-Oct-10.pfpgrowth.patch, 
> MAHOUT-157-Oct-8.TestedMapReducePipeline.patch, 
> MAHOUT-157-Oct-8.pfpgrowth.patch, 
> MAHOUT-157-Oct-9.StreamingDBRead-Inprogress.patch, 
> MAHOUT-157-September-10.patch, MAHOUT-157-September-18.patch, 
> MAHOUT-157-September-5.patch, MAHOUT-157-codecleanup-javadocs.patch, 
> MAHOUT-157-final.patch, MAHOUT-157-inProgress-August-5.patch
>
>
> Implement: http://infolab.stanford.edu/~echang/recsys08-69.pdf



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