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https://issues.apache.org/jira/browse/LUCENE-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13471117#comment-13471117
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Lance Norskog commented on LUCENE-3922:
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bq. On the other hand, I agree with Christian to not preserving leading zeros.
So, "◯◯七" doesn't need to become "007".
This example shows why leading zeros should be preserved :)
There are different kinds of text search. Searching for media titles like James
Bond movies is a very different thing from searching newspaper articles. You
might want to find "◯◯七" as the Japanese-language release and "007" as the
English-language release. These numbers are brands, not numbers.
> Add Japanese Kanji number normalization to Kuromoji
> ---------------------------------------------------
>
> Key: LUCENE-3922
> URL: https://issues.apache.org/jira/browse/LUCENE-3922
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/analysis
> Affects Versions: 4.0-ALPHA
> Reporter: Kazuaki Hiraga
> Labels: features
> Attachments: LUCENE-3922.patch
>
>
> 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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