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https://issues.apache.org/jira/browse/MAHOUT-1250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13682648#comment-13682648
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Hudson commented on MAHOUT-1250:
--------------------------------

Integrated in Mahout-Quality #2079 (See 
[https://builds.apache.org/job/Mahout-Quality/2079/])
    MAHOUT-1250 Deprecate unused algorithms (Revision 1492837)

     Result = SUCCESS
ssc : 
Files : 
* 
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BiasedItemBasedRecommender.java
* 
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/recommender/slopeone/DiffStorage.java

                
> Deprecate unused algorithms
> ---------------------------
>
>                 Key: MAHOUT-1250
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1250
>             Project: Mahout
>          Issue Type: Improvement
>    Affects Versions: 0.8
>            Reporter: Sebastian Schelter
>            Assignee: Sebastian Schelter
>             Fix For: 0.8
>
>
> As discussed on the mailinglist, we will deprecate a lot of unused algorithms 
> to tackle the 1.0 release with a more slim codebase. 
> So far we propose to deprecate these algorithms (and schedule them for 
> removal):
> - Clustering:
>     Dirichlet
>     MeanShift
>     MinHash
>               Eigencuts in o.a.m.clustering.spectral.eigencuts
> - Classification:
>               Winnow
>               Perceptron
> - Frequent Pattern Mining
> - Collaborative Filtering:
>               all recommenders in o.a.m.cf.taste.impl.recommender.knn
>               TreeClusteringRecommender in o.a.m.cf.taste.impl.recommender
>               SlopeOne implementations in o.a.m..cf.taste.hadoop.slopeone and 
> o.a.m.cf.taste.impl.recommender.slopeone
>               distributed pseudo recommender in o.a.m.cf.taste.hadoop.pseudo
> -Math
>               Hadoop entropy stuff in o.a.m.math.stats.entropy
>                 Lanczos in favor of SSVD 

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