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https://issues.apache.org/jira/browse/LUCENE-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238329#comment-13238329
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Koji Sekiguchi commented on LUCENE-3922:
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We, RONDHUIT, have done this kind of normalization (and more!). You may be
interested in:
http://www.rondhuit-demo.com/RCSS/api/overview-summary.html#featured-japanese
||Summary||normalization sample||
|漢数字=>算用数字正規化|四七=>47, 四十七=>47, 四拾七=>47, 四〇七=>407|
|和暦=>西暦正規化|昭和四七年、昭和四十七年、昭和四拾七年=>1972年, 昭和六十四年、平成元年=>1989年|
> Add Japanese Kanji number normalization to Kuromoji
> ---------------------------------------------------
>
> Key: LUCENE-3922
> URL: https://issues.apache.org/jira/browse/LUCENE-3922
> Project: Lucene - Java
> Issue Type: New Feature
> Components: modules/analysis
> Affects Versions: 4.0
> Reporter: Kazuaki Hiraga
> Labels: features
>
> Japanese people use Kanji numerals instead of Arabic numerals for writing
> price, address and so on. i.e 12万4800円(124,800JPY), 二番町三ノ二(3-2 Nibancho) and
> 十二月(December). So, we would like to normalize those Kanji numerals to Arabic
> numerals (I don't think we need to have a capability to normalize to Kanji
> numerals).
>
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