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Posted to dev@lucene.apache.org by "Christian Moen (JIRA)" <ji...@apache.org> on 2015/10/29 04:25:27 UTC
[jira] [Assigned] (LUCENE-6837) Add N-best output capability to
JapaneseTokenizer
[ https://issues.apache.org/jira/browse/LUCENE-6837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Christian Moen reassigned LUCENE-6837:
--------------------------------------
Assignee: Christian Moen
> Add N-best output capability to JapaneseTokenizer
> -------------------------------------------------
>
> Key: LUCENE-6837
> URL: https://issues.apache.org/jira/browse/LUCENE-6837
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 5.3
> Reporter: KONNO, Hiroharu
> Assignee: Christian Moen
> Priority: Minor
> Attachments: LUCENE-6837.patch
>
>
> Japanese morphological analyzers often generate mis-segmented tokens. N-best output reduces the impact of mis-segmentation on search result. N-best output is more meaningful than character N-gram, and it increases hit count too.
> If you use N-best output, you can get decompounded tokens (ex: "シニアソフトウェアエンジニア" => {"シニア", "シニアソフトウェアエンジニア", "ソフトウェア", "エンジニア"}) and overwrapped tokens (ex: "数学部長谷川" => {"数学", "部", "部長", "長谷川", "谷川"}), depending on the dictionary and N-best parameter settings.
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