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From "Dan Filimon (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (MAHOUT-1156) Adding nearest neighbor Searchers
Date Tue, 12 Mar 2013 16:37:13 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600141#comment-13600141
] 

Dan Filimon edited comment on MAHOUT-1156 at 3/12/13 4:36 PM:
--------------------------------------------------------------

After talking offline to Ted, I made the following changes:
- moved the classes from o.a.m.clustering.streaming.search to o.a.m.math.neighborhood; the
class need to remain in core/ because they depend on the distance measures which are in core/
(and those cannot be moved to math/ because of Hadoop dependencies)
- moved lumpyRandomData() to LumpyData
- made SearchQualityTest a value-parameterized test that compares different searchers' best
result to the brute searcher's result and compares runtimes
                
      was (Author: dfilimon):
    After talking offline to Ted, I made the following changes:
- moved the classes from o.a.m.clustering.streaming.search to o.a.m.math.nearestneighbor;
the class need to remain in core/ because they depend on the distance measures which are in
core/ (and those cannot be moved to math/ because of Hadoop dependencies)
- moved lumpyRandomData() to LumpyData
- made SearchQualityTest a value-parameterized test that compares different searchers' best
result to the brute searcher's result and compares runtimes
                  
> Adding nearest neighbor Searchers
> ---------------------------------
>
>                 Key: MAHOUT-1156
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1156
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Clustering
>    Affects Versions: 0.8
>            Reporter: Dan Filimon
>         Attachments: MAHOUT_1156.patch, MAHOUT_1156_tests.patch
>
>
> Adding the Searcher, UpdatableSearcher abstract classes defining what a nearest-neighbor
searcher does.
> The following implementations are available in the o.a.m.math.neighborhood package:
> - BruteSearch
> - ProjectionSearch
> - FastProjectionSearch
> - LocalitySensityHashSearch
> Additionally there are 2 new abstract classes available:
> - Searcher
> - UpdatableSearcher
> This is part of https://issues.apache.org/jira/browse/MAHOUT-1154
> There are no more test issues.

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