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From Erik Hatcher <>
Subject Re: no EnglishAnalyzer ?
Date Wed, 29 Jun 2005 14:39:12 GMT

On Jun 29, 2005, at 4:03 AM, Paul Libbrecht wrote:

> Le 29 juin 05, à 00:57, Erik Hatcher a écrit :
>> Paul - if stemming is what you're looking for, then grab the  
>> SnowballAnalyzer code from Subversion under contrib/snowball.  Or  
>> you could get a binary copy of the JAR from the source code  
>> distribution of Lucene in Action at (and  
>> see examples of its use in the sample code there).  Lucene's JAR  
>> does have a built-in PorterStemFilter, but none of the built-in  
>> analyzers use it, and the SnowballAnalyzer is more commonly used  
>> anyway.
> What is the differences between, PorterStemFilter, GermanFilter and  
> the filters in SnowballAnalyzers ?

GermanStemFilter (not GermanFilter) is specific to German.   
PorterStemFilter is for English.  SnowballAnalyzer is an engine that  
runs any of the available stemmers (there is German, a few different  
English ones, and several other language-specific stemmers).

Your best bet would be to give each of them a try on some sample text  
and see which one fits best for your needs.


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