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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2009/02/27 15:13:12 UTC
[jira] Resolved: (LUCENE-1548) LevenshteinDistance code
normalization is incorrect
[ https://issues.apache.org/jira/browse/LUCENE-1548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-1548.
----------------------------------------
Resolution: Fixed
Fix Version/s: 2.9
Thanks Thomas!
> LevenshteinDistance code normalization is incorrect
> ---------------------------------------------------
>
> Key: LUCENE-1548
> URL: https://issues.apache.org/jira/browse/LUCENE-1548
> Project: Lucene - Java
> Issue Type: Bug
> Components: contrib/spellchecker
> Affects Versions: 2.3, 2.3.1, 2.3.2, 2.4
> Reporter: Thomas Morton
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.4.1, 2.9
>
> Attachments: LUCENE-1548.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> The normalization of the edit distance should use the maximum of the two string being compared instead of the minimum. Otherwise negative distances are possible. The spell checker filters out edits below a certain threshold so this hasn't been a problem in practice.
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