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https://issues.apache.org/jira/browse/LUCENE-9289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-9289:
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Component/s: modules/spellchecker
> Speed up Levenshtein distance calculation when we don't need the exact
> distance
> -------------------------------------------------------------------------------
>
> Key: LUCENE-9289
> URL: https://issues.apache.org/jira/browse/LUCENE-9289
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spellchecker
> Reporter: Andras Salamon
> Priority: Minor
> Attachments: SOLR-14360-01.patch
>
>
> Sometimes when we calculate the Levenshtein distance we don't need the exact
> distance, we only want to know if the strings are similar enough.
> [https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/spelling/SolrSpellChecker.java#L113-L114]
> {noformat}
> sug.score = sd.getDistance(original, sug.string);
> if (sug.score < min) continue; {noformat}
> If we use this threshold in the distance calculation, we can speed it up, we
> can stop the calculation when we already know that the the the distance will
> be lower than the threshold.
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