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https://issues.apache.org/jira/browse/LUCENE-4282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-4282:
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Attachment: LUCENE-4282.patch
A simpler patch, i also benchmarked.
The problem is this comment in the legacy scoring (in all previous lucene
versions):
{noformat}
// this will return less than 0.0 when the edit distance is
// greater than the number of characters in the shorter word.
// but this was the formula that was previously used in FuzzyTermEnum,
// so it has not been changed (even though minimumSimilarity must be
// greater than 0.0)
{noformat}
Because of that its really impossible to fix until we remove that deprecated
one completely :)
So i think this one is good to commit, and separately I will look at removing
the deprecated one from trunk and cleaning all this up when i have time (I
would port the math-proof tests from automata-package to run as queries so we
are sure).
> Automaton Fuzzy Query doesn't deliver all results
> -------------------------------------------------
>
> Key: LUCENE-4282
> URL: https://issues.apache.org/jira/browse/LUCENE-4282
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 4.0-ALPHA
> Reporter: Johannes Christen
> Assignee: Robert Muir
> Labels: newbie
> Attachments: LUCENE-4282-tests.patch, LUCENE-4282.patch,
> LUCENE-4282.patch, ModifiedFuzzyTermsEnum.java, ModifiedFuzzyTermsEnum.java
>
>
> Having a small index with n documents where each document has one of the
> following terms:
> WEBER, WEBE, WEB, WBR, WE, (and some more)
> The new FuzzyQuery (Automaton) with maxEdits=2 only delivers the expected
> terms WEBER and WEBE in the rewritten query. The expected terms WEB and WBR
> which have an edit distance of 2 as well are missing.
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