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https://issues.apache.org/jira/browse/HIVE-9556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Pivovarov updated HIVE-9556:
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Summary: create UDF to calculate the Levenshtein distance between two
strings (was: create UDF to measure strings similarity using Levenshtein
Distance algo)
> create UDF to calculate the Levenshtein distance between two strings
> --------------------------------------------------------------------
>
> Key: HIVE-9556
> URL: https://issues.apache.org/jira/browse/HIVE-9556
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
> Attachments: HIVE-9556.1.patch, HIVE-9556.2.patch
>
>
> algorithm description http://en.wikipedia.org/wiki/Levenshtein_distance
> {code}
> --one edit operation, greatest str len = 12
> str_sim_levenshtein('Test String1', 'Test String2') = 1 - 1 / 12 = 0.91666667
> {code}
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