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https://issues.apache.org/jira/browse/TEXT-191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17317501#comment-17317501
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Bradley Rumball commented on TEXT-191:
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It appears that this issue was never fixed?
I've created a PR to close this issue:
https://github.com/apache/commons-text/pull/214
> JaroWinklerDistance returns the same values as JaroWinklerSimilarity
> --------------------------------------------------------------------
>
> Key: TEXT-191
> URL: https://issues.apache.org/jira/browse/TEXT-191
> Project: Commons Text
> Issue Type: Bug
> Affects Versions: 1.9
> Environment: Windows 10
> AdoptOpenJDK 11
> Reporter: Alexander Foerster
> Assignee: Bruno P. Kinoshita
> Priority: Major
> Labels: JaroWinkler, easyfix, newbie
>
>
> The following two code snippets give the same output:
> {code:java}
> // checking similarity
> JaroWinklerSimilarity jws = new JaroWinklerSimilarity();
> System.out.println("SIMILARITY: " + jws.apply("foo", "foo") + " " +
> jws.apply("foo", "bar"));
> // SIMILARITY: 1.0 0.0{code}
> {code:java}
> // checking distance
> JaroWinklerDistance jwd = new JaroWinklerDistance();
> System.out.println("DISTANCE: " + jwd.apply("foo", "foo") + " " +
> jwd.apply("foo", "bar"));
> // DISTANCE: 1.0 0.0
> {code}
> I would expect the distance to be 1 - similarity, but as you can see distance
> and similarity return the same values.
>
> An easy fix would be to use the commented lines in JaroWinklerDistance.java:
> {code:java}
> // JaroWinklerSimilarity similarity = new JaroWinklerSimilarity();
> // return 1 - similarity.apply(left, right);
> {code}
> and maybe make _similarity_ be a final property/variable.
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