[jira] [Updated] (LUCENE-3475) ShingleFilter should handle positionIncrement of zero, e.g. synonyms

["Michael McCandless (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-3475:
---------------------------------------

    Labels: gsoc2012 lucene-gsoc-12  (was: )

I think this is important, now that we have "graph" analyzers (like Kuromoji).

So ShingleFilter should pay attention to posInc as well as posLength...
                
> ShingleFilter should handle positionIncrement of zero, e.g. synonyms
> --------------------------------------------------------------------
>
>                 Key: LUCENE-3475
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3475
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: modules/analysis
>    Affects Versions: 3.4
>            Reporter: Cameron
>            Priority: Minor
>              Labels: gsoc2012, lucene-gsoc-12
>
> ShingleFilter is creating shingles for a single term that has been expanded by synonyms when it shouldn't. The position increment is 0.
> As an example, I have an Analyzer with a SynonymFilter followed by a ShingleFilter. Assuming car and auto are synonyms, the SynonymFilter produces two tokens and position 1: car, auto. The ShingleFilter is then producing 3 tokens, when there should only be two: car, car auto, auto. This behavior seems incorrect.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org