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Posted to dev@mahout.apache.org by "Drew Farris (JIRA)" <ji...@apache.org> on 2010/07/02 04:46:49 UTC
[jira] Resolved: (MAHOUT-401) Use NamedVector in seq2sparse
[ https://issues.apache.org/jira/browse/MAHOUT-401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Drew Farris resolved MAHOUT-401.
--------------------------------
Assignee: Drew Farris
Fix Version/s: 0.4
Resolution: Fixed
Actually, most of this was committed as a part of MAHOUT-167 (committed in r952758) - the only thing missing was the fix to PartialVectorMergeReducer, which I've committed.
> Use NamedVector in seq2sparse
> -----------------------------
>
> Key: MAHOUT-401
> URL: https://issues.apache.org/jira/browse/MAHOUT-401
> Project: Mahout
> Issue Type: Bug
> Components: Utils
> Affects Versions: 0.4
> Reporter: Drew Farris
> Assignee: Drew Farris
> Fix For: 0.4
>
> Attachments: MAHOUT-401.patch, pv.patch
>
>
> In seq2sparse, TFIDFPartialVectorReducer and TFPartialVectorReducer should write NamedVectors. It appears that a lack of labels on the vector input to k-means at least breaks the cluster-dumper in the sense that it no longer prints the original document ids for points.
> See: http://lucene.472066.n3.nabble.com/where-are-the-points-in-each-cluster-kmeans-clusterdump-td838683.html#a845600
> I wonder if this is also an issue with the code that generates vectors from lucene indexes?
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