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From "Karl Wettin (JIRA)" <>
Subject [jira] Commented: (LUCENE-889) Standard tokenizer with punctuation output
Date Fri, 25 May 2007 19:51:16 GMT


Karl Wettin commented on LUCENE-889:

Hoss Man [25/May/07 11:14 AM]
> > In order to get the punctuation, one needs to use a plain StandardTokenizer.
> I believe that is Erik's point. StandardTokenizer is a public class that many
> people use directly (specifically: every one who has ever posted a question
> about changing the behavior of StandardAnalyzer and been given the stock
> answer "write your own Analyzer that uses the same Tokenizer and
> change/adds the list of TokenFilters.

Aha. My JavaCC-skills aren't that great. I'll look in to it.

I presume something like 

    isTokenizingPuctuation() && token = <PUNCTUATION> |

is possible.

> Standard tokenizer with punctuation output
> ------------------------------------------
>                 Key: LUCENE-889
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.1
>            Reporter: Karl Wettin
>            Priority: Trivial
>         Attachments: standard.patch, test.patch
> This patch adds punctuation (comma, period, question mark and exclamation point)  tokens
as output from the StandardTokenizer, and filters them out in the StandardFilter.
> (I needed them for text classification reasons.)

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