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https://issues.apache.org/jira/browse/LANG-1199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pascal Schumacher resolved LANG-1199.
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Resolution: Fixed
Assignee: Pascal Schumacher
Fix Version/s: 3.5
Fixed by replacing the current implementation with the one of Apache Lucene.
Thanks for reporting.
> Fix implementation of StringUtils.getJaroWinklerDistance()
> ----------------------------------------------------------
>
> Key: LANG-1199
> URL: https://issues.apache.org/jira/browse/LANG-1199
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.*
> Affects Versions: 3.4
> Reporter: M. Steiger
> Assignee: Pascal Schumacher
> Fix For: 3.5
>
>
> The current implementation of StringUtils.getJaroWinklerDistance() does not
> compute the correct result in some cases. See #LANG-944 for the initial code
> contribution.
> StringUtils.getJaroWinklerDistance("Haus Ingeborg", "Ingeborg Esser") == 0.0
> This is due to the incorrect computation of common characters, which causes
> the algorithm to exit prematurely.
> In contrast, the implementation in Lucene gives ~0.63, which is about right.
> JaroWinklerDistance d = new JaroWinklerDistance();
> getDistance("Haus Ingeborg", "Ingeborg Esser");
> See
> https://lucene.apache.org/core/3_0_3/api/contrib-spellchecker/org/apache/lucene/search/spell/JaroWinklerDistance.html
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