improve arabic analyzer: light8 -> light10
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Key: LUCENE-1758
URL: https://issues.apache.org/jira/browse/LUCENE-1758
Project: Lucene - Java
Issue Type: Improvement
Components: contrib/analyzers
Reporter: Robert Muir
Priority: Minor
Attachments: 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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