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From "Wagner,Harry" <>
Subject RE: Solr and KStem
Date Mon, 10 Sep 2007 17:22:51 GMT
Hi Yonik,
The modified KStemmer source is attached. The original KStemFilter is
now wrapped (and replaced) by KStemFilterFactory.  I also changed the
path to avoid any naming collisions with existing Lucene code.

I included the jar file also, for anyone who wants to just drop and

- put KStem2.jar in your solr/lib directory.
- change your schema to use: <filter
class="org.oclc.solr.analysis.KStemFilterFactory" cacheSize="20000"/>
- restart your app server

I don't know if you credit contributions, but if so please include OCLC.
Seems only fair since I did this on their dime :)


-----Original Message-----
From: [] On Behalf Of Yonik
Sent: Friday, September 07, 2007 3:59 PM
Subject: Re: Solr and KStem

On 9/7/07, Wagner,Harry <> wrote:
> I've implemented a Solr plug-in that wraps KStem for Solr use.  KStem
> considered to be more appropriate for library usage since it is much
> less aggressive than Porter (i.e., searches for organization do NOT
> match on organ!). If there is any interest in feeding this back into
> Solr I would be happy to contribute it.

We need to make sure that the license for that k-stemmer is ASL
compatible of course.


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