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Posted to dev@lucene.apache.org by "Jim Ferenczi (Jira)" <ji...@apache.org> on 2019/08/29 09:38:00 UTC

[jira] [Created] (LUCENE-8959) JapaneseNumberFilter does not take whitespaces into account when concatenating numbers

Jim Ferenczi created LUCENE-8959:
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             Summary: JapaneseNumberFilter does not take whitespaces into account when concatenating numbers
                 Key: LUCENE-8959
                 URL: https://issues.apache.org/jira/browse/LUCENE-8959
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Jim Ferenczi


Today the JapaneseNumberFilter tries to concatenate numbers even if they are separated by whitespaces. So for instance "10 100" is rewritten into "10100" even if the tokenizer doesn't discard punctuations. In practice this is not an issue but this can lead to giant number of tokens if there are a lot of numbers separated by spaces. The number of concatenation should be configurable with a sane default limit in order to avoid creating big tokens that slows down the analysis.



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