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From "Robert Muir (JIRA)" <>
Subject [jira] Commented: (LUCENE-1966) Arabic Analyzer: Stopwords list needs enhancement
Date Fri, 09 Oct 2009 01:04:31 GMT


Robert Muir commented on LUCENE-1966:

Basem, thanks for the patch, and the comments.

One thing I noticed: if I apply the patch, على (the stopword) will not be filtered as a
stopword. This is because it will be normalized to علي (the name).

So, if we are going to normalize before stopfilter, I think we need to make sure the stopwords
do not contain yeh without dots, or else these will not work. This is one example of why I
was scared to apply normalization before stopwords, because by doing so, we cause على and
علي to conflate.

Let me know what you think about this.

> Arabic Analyzer: Stopwords list needs enhancement
> -------------------------------------------------
>                 Key: LUCENE-1966
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/analyzers
>    Affects Versions: 2.9.1
>            Reporter: Basem Narmok
>            Assignee: Robert Muir
>            Priority: Trivial
>             Fix For: 2.9
>         Attachments: arabic-stopwords-comments.txt, LUCENE-1966.patch
> The provided Arabic stopwords list needs some enhancements (e.g. it contains a lot of
words that not stopwords, and some cleanup) . patch will be provided with this issue.

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