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Posted to dev@mahout.apache.org by "Hudson (Commented) (JIRA)" <ji...@apache.org> on 2011/11/15 05:10:52 UTC
[jira] [Commented] (MAHOUT-885) Freq pattern growth advertises
wrong value for default
[ https://issues.apache.org/jira/browse/MAHOUT-885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150226#comment-13150226 ]
Hudson commented on MAHOUT-885:
-------------------------------
Integrated in Mahout-Quality #1177 (See [https://builds.apache.org/job/Mahout-Quality/1177/])
MAHOUT-885 correct, set FPGrowth default number of reducers to 1000
srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1201911
Files :
* /mahout/trunk/core/src/main/java/org/apache/mahout/common/Parameters.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/fpm/pfpgrowth/FPGrowthDriver.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/fpm/pfpgrowth/PFPGrowth.java
> Freq pattern growth advertises wrong value for default
> ------------------------------------------------------
>
> Key: MAHOUT-885
> URL: https://issues.apache.org/jira/browse/MAHOUT-885
> Project: Mahout
> Issue Type: Bug
> Components: Frequent Itemset/Association Rule Mining
> Affects Versions: 0.6
> Reporter: tom pierce
> Assignee: Sean Owen
> Labels: patch
> Fix For: 0.6
>
> Attachments: MAHOUT-885.patch
>
>
> FPG advertises that numgroups will default to 1000, but it actually uses 50. If you do not override the default, only 50 reducers get work even if you have many more.
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