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Posted to dev@lucene.apache.org by "Mark Miller (JIRA)" <ji...@apache.org> on 2009/06/11 04:11:07 UTC
[jira] Commented: (LUCENE-1628) Persian Analyzer
[ https://issues.apache.org/jira/browse/LUCENE-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718274#action_12718274 ]
Mark Miller commented on LUCENE-1628:
-------------------------------------
Thanks Robert, looks cool.
Anyone know what the policy on the stop word list being BSD license is? I assume its compatible with Apache? Whats our BSD license policy? I don't see anything definitive on a quick mailing list search.
- Mark
> 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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