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https://issues.apache.org/jira/browse/LUCENE-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721057#action_12721057
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Robert Muir commented on LUCENE-1628:
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mark: thanks for the followup on the licenses!
wrt non-english text, I will say that if you set encoding to UTF-8 (such as in
eclipse under project>properties>text encoding) then things are fine.
the ant build also does the right thing, and there are definitely other
analyzers that behave like this too, and will break if things aren't set right.
also, if you do not set encoding to UTF-8, most editors (such as eclipse) will
not be able to save the file, and will error out with encoding issues... even
if the text is inside a comment!
not really (ok a little) trying to talk you out of this, but I'm just not sure
it would really help anything...
that being said... (my) eclipse still jacks up if you team->apply patch from
file. if you open the patch in notepad, ctrl-a,ctrl-c, and then team->apply
patch from clipboard, it works fine... very annoying!
> Persian Analyzer
> ----------------
>
> Key: LUCENE-1628
> URL: https://issues.apache.org/jira/browse/LUCENE-1628
> Project: Lucene - Java
> Issue Type: New Feature
> Components: contrib/analyzers
> Reporter: Robert Muir
> Assignee: Mark Miller
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1628.patch, LUCENE-1628.patch
>
>
> A simple persian analyzer.
> i measured trec scores with the benchmark package below against
> http://ece.ut.ac.ir/DBRG/Hamshahri/ :
> SimpleAnalyzer:
> SUMMARY
> Search Seconds: 0.012
> DocName Seconds: 0.020
> Num Points: 981.015
> Num Good Points: 33.738
> Max Good Points: 36.185
> Average Precision: 0.374
> MRR: 0.667
> Recall: 0.905
> Precision At 1: 0.585
> Precision At 2: 0.531
> Precision At 3: 0.513
> Precision At 4: 0.496
> Precision At 5: 0.486
> Precision At 6: 0.487
> Precision At 7: 0.479
> Precision At 8: 0.465
> Precision At 9: 0.458
> Precision At 10: 0.460
> Precision At 11: 0.453
> Precision At 12: 0.453
> Precision At 13: 0.445
> Precision At 14: 0.438
> Precision At 15: 0.438
> Precision At 16: 0.438
> Precision At 17: 0.429
> Precision At 18: 0.429
> Precision At 19: 0.419
> Precision At 20: 0.415
> PersianAnalyzer:
> SUMMARY
> Search Seconds: 0.004
> DocName Seconds: 0.011
> Num Points: 987.692
> Num Good Points: 36.123
> Max Good Points: 36.185
> Average Precision: 0.481
> MRR: 0.833
> Recall: 0.998
> Precision At 1: 0.754
> Precision At 2: 0.715
> Precision At 3: 0.646
> Precision At 4: 0.646
> Precision At 5: 0.631
> Precision At 6: 0.621
> Precision At 7: 0.593
> Precision At 8: 0.577
> Precision At 9: 0.573
> Precision At 10: 0.566
> Precision At 11: 0.572
> Precision At 12: 0.562
> Precision At 13: 0.554
> Precision At 14: 0.549
> Precision At 15: 0.542
> Precision At 16: 0.538
> Precision At 17: 0.533
> Precision At 18: 0.527
> Precision At 19: 0.525
> Precision At 20: 0.518
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