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https://issues.apache.org/jira/browse/LUCENE-5033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13676587#comment-13676587
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Tim Allison commented on LUCENE-5033:
-------------------------------------
Thank you for your quick response!
I, too, was hoping to avoid calcSimilarity if raw is true, but I think we need
it to calculate the boost. Let me know if I'm missing something.
The bug in the original code was that FilteredTermsEnum sets minSimilarity to 0
when the user-specified minSimilarity is >= 1.0f. So, in SlowFuzzyTermsEnum,
similarity (unless it was Float.NEGATIVE_INFINITY) was typically >
minSimilarity no matter its value. In other words, when the client code made
the call with minSimilarity >=1.0f, that value was correctly recorded in
maxEdits, but maxEdits wasn't the determining factor in whether SlowFuzzyTerms
accepted a term.
> SlowFuzzyQuery appears to fail with edit distance >=3 in some cases
> -------------------------------------------------------------------
>
> Key: LUCENE-5033
> URL: https://issues.apache.org/jira/browse/LUCENE-5033
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/other
> Affects Versions: 4.3
> Reporter: Tim Allison
> Priority: Minor
> Attachments: LUCENE-5033.patch
>
>
> Levenshtein edit btwn "monday" and "montugu" should be 4. The following
> shows a query with "sim" set to 3, and there is a hit.
> public void testFuzzinessLong2() throws Exception {
> Directory directory = newDirectory();
> RandomIndexWriter writer = new RandomIndexWriter(random(), directory);
> addDoc("monday", writer);
>
> IndexReader reader = writer.getReader();
> IndexSearcher searcher = newSearcher(reader);
> writer.close();
> SlowFuzzyQuery query;
> query = new SlowFuzzyQuery(new Term("field", "montugu"), 3, 0);
> ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
> assertEquals(0, hits.length);
> }
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