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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2906) Filter to process output of ICUTokenizer and create overlapping bigrams for CJK
Date Wed, 09 Feb 2011 17:59:58 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-2906:
--------------------------------

    Fix Version/s: 4.0
                   3.2

the prerequisite subtask is fixed, so we should be able to add this in 3.2 (supporting StandardTokenizer,
UAX29URLEmailTokenizer, and ICUTokenizer) without having to change any of the tokenizers.

I'll update the patch.

> Filter to process output of ICUTokenizer and create overlapping bigrams for CJK 
> --------------------------------------------------------------------------------
>
>                 Key: LUCENE-2906
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2906
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Analysis
>            Reporter: Tom Burton-West
>            Priority: Minor
>             Fix For: 3.2, 4.0
>
>         Attachments: LUCENE-2906.patch
>
>
> The ICUTokenizer produces unigrams for CJK. We would like to use the ICUTokenizer but
have overlapping bigrams created for CJK as in the CJK Analyzer.  This filter would take the
output of the ICUtokenizer, read the ScriptAttribute and for selected scripts (Han, Kana),
would produce overlapping bigrams.

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