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https://issues.apache.org/jira/browse/LUCENE-8816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851103#comment-16851103
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Namgyu Kim commented on LUCENE-8816:
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Thanks for the answers :D
Oh, I think your opinion is good, [~tomoko].
It is important to ensure that users do not modify the source code.
If we apply that approach, it seems to be able to create a build tool that
supports two pre-types in the CLI environment.
And it's very important to be good at handling exceptions as [~rcmuir] said.
Otherwise, users will think that stability is poor.
About version control, I totally agree with you.
> Decouple Kuromoji's morphological analyser and its dictionary
> -------------------------------------------------------------
>
> Key: LUCENE-8816
> URL: https://issues.apache.org/jira/browse/LUCENE-8816
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Reporter: Tomoko Uchida
> Priority: Major
>
> I've inspired by this mail-list thread.
>
> [http://mail-archives.apache.org/mod_mbox/lucene-java-user/201905.mbox/%3CCAGUSZHA3U_vWpRfxQb4jttT7sAOu%2BuaU8MfvXSYgNP9s9JNsXw%40mail.gmail.com%3E]
> As many Japanese already know, default built-in dictionary bundled with
> Kuromoji (MeCab IPADIC) is a bit old and no longer maintained for many years.
> While it has been slowly obsoleted, well-maintained and/or extended
> dictionaries risen up in recent years (e.g.
> [mecab-ipadic-neologd|https://github.com/neologd/mecab-ipadic-neologd],
> [UniDic|https://unidic.ninjal.ac.jp/]). To use them with Kuromoji, some
> attempts/projects/efforts are made in Japan.
> However current architecture - dictionary bundled jar - is essentially
> incompatible with the idea "switch the system dictionary", and developers
> have difficulties to do so.
> Traditionally, the morphological analysis engine (viterbi logic) and the
> encoded dictionary (language model) had been decoupled (like MeCab, the
> origin of Kuromoji, or lucene-gosen). So actually decoupling them is a
> natural idea, and I feel that it's good time to re-think the current
> architecture.
> Also this would be good for advanced users who have customized/re-trained
> their own system dictionary.
> Goals of this issue:
> * Decouple JapaneseTokenizer itself and encoded system dictionary.
> * Implement dynamic dictionary load mechanism.
> * Provide developer-oriented dictionary build tool.
> Non-goals:
> * Provide learner or language model (it's up to users and should be outside
> the scope).
> I have not dove into the code yet, so have no idea about it's easy or
> difficult at this moment.
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