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https://issues.apache.org/jira/browse/LUCENE-1758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12736431#action_12736431
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Robert Muir commented on LUCENE-1758:
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i think it is probably ready, the only other easy improvement I can think of
at the moment is perhaps both this and LUCENE-1628 should include
LowerCaseFilter.
This has nothing to do with Arabic (it does not have case) but just
user-friendliness for English content that is encountered.
example from java-user:
http://www.gossamer-threads.com/lists/lucene/java-user/75631#75631
> improve arabic analyzer: light8 -> light10
> ------------------------------------------
>
> Key: LUCENE-1758
> URL: https://issues.apache.org/jira/browse/LUCENE-1758
> Project: Lucene - Java
> Issue Type: Improvement
> Components: contrib/analyzers
> Reporter: Robert Muir
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1758.patch, LUCENE-1758.txt
>
>
> Someone mentioned on the java user list that the arabic analysis was not as
> good as they would like.
> This patch adds the لل- prefix (light10 algorithm versus light8 algorithm).
> In the light10 paper, this improves precision from .390 to .413
> They mention this is not statistically significant, but it makes linguistic
> sense and at least has been shown not to hurt.
> In the future, I hope openrelevance will allow us to try some more
> approaches.
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