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From "Thomas Morton (JIRA)" <>
Subject [jira] Updated: (LUCENE-1297) Allow other string distance measures in spellchecker
Date Wed, 11 Jun 2008 14:04:45 GMT


Thomas Morton updated LUCENE-1297:

    Attachment: string_distance3.patch

I didn't see anything about re-using patch names on the wiki.  please advise.

In svn the LevenshteinDistance class is a re-name and edit of the TRStringDistance class.
 Perhaps the patch doesn't know how to deal with that.  I'll change the name back though I
think given that there are now going to be more than one of these a more descriptive name
makes sense.

Added ASL to Jaro class.

> Allow other string distance measures in spellchecker
> ----------------------------------------------------
>                 Key: LUCENE-1297
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/spellchecker
>    Affects Versions: 2.4
>         Environment: n/a
>            Reporter: Thomas Morton
>            Assignee: Otis Gospodnetic
>            Priority: Minor
>             Fix For: 2.4
>         Attachments: string_distance3.patch
> Updated spelling code to allow for other string distance measures to be used.
> Created StringDistance interface.
> Modified existing Levenshtein distance measure to implement interface (and renamed class).
> Verified that change to Levenshtein distance didn't impact runtime performance.
> Implemented Jaro/Winkler distance metric
> Modified SpellChecker to take distacne measure as in constructor or in set method and
to use interface when calling.

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