# How to normalize Japanese?

**URL:** <https://discuss.elastic.co/t/how-to-normalize-japanese/14347>\
**Category:** Elasticsearch\
**Created:** [November 11, 2013, 9:30am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347 "2013-11-11T09:30:14Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Min\_Cha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/min_cha/32/1131_2.png) [@Min\_Cha](https://discuss.elastic.co/u/Min_Cha)\
**Post date:** [November 11, 2013, 9:30am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347/1 "2013-11-11T09:30:14Z")

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Hello all.

I would like to search by hiragana or katakana without any converting.  
For example, It will be matched by same katakana letters even if original  
text is stored as hiragana.  
I expected to be normalization filter for that but could`t find.

How I resolve this problem? Please give me some advice.  
Thanks for reading.

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**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\
**Post date:** [November 11, 2013, 9:37am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347/2 "2013-11-11T09:37:30Z")

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The best japanese analyzer I know is kuromoji

> **[elastic/elasticsearch-analysis-kuromoji](https://github.com/elastic/elasticsearch-analysis-kuromoji)**
>
> elasticsearch-analysis-kuromoji - Japanese (kuromoji) Analysis Plugin

Does it work?

Jörg

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**Author:** ![Min\_Cha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/min_cha/32/1131_2.png) [@Min\_Cha](https://discuss.elastic.co/u/Min_Cha)\
**Post date:** [November 11, 2013, 9:40am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347/3 "2013-11-11T09:40:19Z")

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Thanks for answer.  
The kuromoji seems like to not support a feature that I hope.

2013년 11월 11일 월요일 오후 6시 37분 30초 UTC+9, Jörg Prante 님의 말:

> The best japanese analyzer I know is kuromoji  
> [GitHub - elastic/elasticsearch-analysis-kuromoji: Japanese (kuromoji) Analysis Plugin](https://github.com/elasticsearch/elasticsearch-analysis-kuromoji)
> 
> Does it work?
> 
> Jörg

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**Author:** ![johtani](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/johtani/32/44956_2.png) [@johtani](https://discuss.elastic.co/u/johtani)\
**Post date:** [November 11, 2013, 9:55am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347/4 "2013-11-11T09:55:02Z")

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Hi,

You try to use MappingCharFilter.  
You define mappings all hiragana to katakana.

> **[Elasticsearch Platform — Find real-time answers at scale](https://www.elastic.co)**
>
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But kanji does not convert hiragana or katakana.

Make sense?

* * *

Jun Ohtani  
[johtani@gmail.com](mailto:johtani@gmail.com)  
blog : [http://blog.johtani.info](http://blog.johtani.info)  
twitter : [http://twitter.com/johtani](http://twitter.com/johtani)

2013/11/11 18:40、Min Cha [minslovey@gmail.com](mailto:minslovey@gmail.com) のメール：

> Thanks for answer.  
> The kuromoji seems like to not support a feature that I hope.
> 
> 2013년 11월 11일 월요일 오후 6시 37분 30초 UTC+9, Jörg Prante 님의 말:  
> The best japanese analyzer I know is kuromoji [GitHub - elastic/elasticsearch-analysis-kuromoji: Japanese (kuromoji) Analysis Plugin](https://github.com/elasticsearch/elasticsearch-analysis-kuromoji)
> 
> Does it work?
> 
> Jörg
> 
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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 2:07am UTC](https://discuss.elastic.co/t/how-to-normalize-japanese/14347/5 "2017-07-06T02:07:53Z")

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