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  1. Lucene - Core
  2. LUCENE-9853

Use CJKWidthCharFilter as the default character normalizer for JapaneseAnalyzer instead of CJKWidthFilter

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: main (9.0)
    • Fix Version/s: None
    • Component/s: modules/analysis
    • Labels:
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    • Lucene Fields:
      New

      Description

      Follow-up issue of LUCENE-9413.

      We now have CJKWidthCharFilter in analyzers-common. I believe in many situations it is recommended applying half-width/full-width character normalization before tokenization for consistency in analysis.

      The change slightly affects on the analyzer's outputs. We can provide a parameter to switch back to CJKWidthFilter for backward compatibility.

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              • Assignee:
                tomoko Tomoko Uchida
                Reporter:
                tomoko Tomoko Uchida
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