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https://issues.apache.org/jira/browse/LUCENE-2067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783389#action_12783389
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Simon Willnauer commented on LUCENE-2067:
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bq. make the stem filter final, and add explicit test for the mobile e rewrite
looks good to me! Go ahead and commit.
bq. Sorry for the confusion (pointing you at a slightly different algorithm)...
well at least I figured out there must be something wrong :)
> Czech Stemmer
> -------------
>
> Key: LUCENE-2067
> URL: https://issues.apache.org/jira/browse/LUCENE-2067
> Project: Lucene - Java
> Issue Type: New Feature
> Components: contrib/analyzers
> Reporter: Robert Muir
> Assignee: Robert Muir
> Priority: Minor
> Fix For: 3.1
>
> Attachments: LUCENE-2067.patch, LUCENE-2067.patch, LUCENE-2067.patch,
> LUCENE-2067.patch
>
>
> Currently, the CzechAnalyzer is merely stopwords, and there isn't a czech
> stemmer in snowball.
> This patch implements the light stemming algorithm described in:
> http://portal.acm.org/citation.cfm?id=1598600
> In their measurements, it improves MAP 42%
> The analyzer does not use this stemmer if LUCENE_VERSION <= 3.0, for back
> compat.
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