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Date: Thu, 29 Dec 2011 14:11:31 +0000 (UTC)
From: "Robert Muir (Commented) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Commented] (LUCENE-2906) Filter to process output of
 ICUTokenizer and create overlapping bigrams for CJK
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    [ https://issues.apache.org/jira/browse/LUCENE-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13177187#comment-13177187 ] 

Robert Muir commented on LUCENE-2906:
-------------------------------------

Hi Uwe:

Many filters in lucene currently do things like this, and have forever (including StandardFilter).
In my opinion its ok, as its documented this filter works with StandardTokenizer and ICUTokenizer which use
the interned types.

So I would prefer if we discuss this on another issue.
                
> 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: modules/analysis
>            Reporter: Tom Burton-West
>            Assignee: Robert Muir
>            Priority: Minor
>             Fix For: 3.6, 4.0
>
>         Attachments: LUCENE-2906.patch, LUCENE-2906.patch, LUCENE-2906.patch, 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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