Jan Martin Keil created LANG-1269:
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             Summary: Wrong name or result of 
StringUtils::getJaroWinklerDistance
                 Key: LANG-1269
                 URL: https://issues.apache.org/jira/browse/LANG-1269
             Project: Commons Lang
          Issue Type: Bug
    Affects Versions: 3.4, 3.3
            Reporter: Jan Martin Keil
            Priority: Minor


The name of the method StringUtils::getJaroWinklerDistance is misleading.
Currently for equal strings {{1}} is returned, for completely different strings 
{{0}} is returned. That is a measure of similarity, not of a distance. A 
distance must be {{0}} for equal strings. I read on the issues LANG-591 and 
LANG-944, that it was decided to have a similar name to 
StringUtils::getLevenshteinDistance, but that requires also the change of the 
methods result.

Could you please (1) rename the method to StringUtils::getJaroWinklerSimilarity 
or (2) change the method to return {{1 - currentResult}}?

First option has the disadvantage to lose the similar naming of the similar 
methods, second option implies the risk to unnoticed introduce bugs in 
depending code. So I think it is preferable to use the first option.




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