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From "Michael Semb Wever (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1380) Patch for ShingleFilter.coterminalPositionIncrement
Date Thu, 11 Sep 2008 12:51:45 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Semb Wever updated LUCENE-1380:
---------------------------------------

    Attachment:     (was: LUCENE-1380.patch)

> Patch for ShingleFilter.coterminalPositionIncrement
> ---------------------------------------------------
>
>                 Key: LUCENE-1380
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1380
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/analyzers
>            Reporter: Michael Semb Wever
>             Fix For: 2.4
>
>         Attachments: LUCENE-1380.patch
>
>
> Make it possible for *all* words and shingles to be placed at the same position.
> Default is to place each shingle at the same position as the unigram (or first shingle
if outputUnigrams=false). That is, each coterminal token has positionIncrement=1 and every
other token a positionIncrement=0. 
> This leads to a MultiPhraseQuery where at least one word/shingle must be matched from
each word/token. This is not always desired. 
> See http://comments.gmane.org/gmane.comp.jakarta.lucene.user/34746 for mailing list thread.

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