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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2234) Hindi Analyzer
Date Tue, 02 Feb 2010 07:16:18 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-2234:
--------------------------------

    Attachment: LUCENE-2234.patch

synced up to trunk (keywordAttribute, etc), and with tests.

I think this is ready. will commit in a few days if no one objects.


> Hindi Analyzer
> --------------
>
>                 Key: LUCENE-2234
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2234
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/analyzers
>            Reporter: Robert Muir
>            Priority: Minor
>             Fix For: 3.1
>
>         Attachments: LUCENE-2234.patch, LUCENE-2234.patch
>
>
> An analyzer for hindi.
> below are MAP values on the FIRE 2008 test collection.
> QE means expansion with morelikethis, all defaults, on top 5 docs.
> ||setup||T||T(QE)||TD||TD(QE)||TDN||TDN(QE)||
> |words only|0.1646|0.1979|0.2241|0.2513|0.2468|0.2735|
> |HindiAnalyzer|0.2875|0.3071|0.3387|*0.3791**|0.3837|0.3810|
> |improvement|74.67%|55.18%|51.14%|50.86%|55.47%|39.31%|
> * TD was the official measurement, highest score for this collection in FIRE 2008 was
0.3487: http://www.isical.ac.in/~fire/paper/mcnamee-jhu-fire2008.pdf
> needs a bit of cleanup and more tests

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