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From "Michael Semb Wever (JIRA)" <>
Subject [jira] Created: (LUCENE-1380) Patch for ShingleFilter.coterminalPositionIncrement
Date Wed, 10 Sep 2008 10:58:44 GMT
Patch for ShingleFilter.coterminalPositionIncrement

                 Key: LUCENE-1380
             Project: Lucene - Java
          Issue Type: Improvement
          Components: contrib/analyzers
            Reporter: Michael Semb Wever
             Fix For: 2.4

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 for mailing list thread.

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