# Re: AAF - Stem Analyzer

**URL:** <https://www.ruby-forum.com/t/re-aaf-stem-analyzer/78567>\
**Category:** Ferret\
**Created:** [December 6, 2006, 10:54pm UTC](https://www.ruby-forum.com/t/re-aaf-stem-analyzer/78567 "2006-12-06T22:54:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![matthew](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ed655f/32.png) [@matthew](https://www.ruby-forum.com/u/matthew)\
**Post date:** [December 6, 2006, 10:54pm UTC](https://www.ruby-forum.com/t/re-aaf-stem-analyzer/78567/1 "2006-12-06T22:54:42Z")

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I’m not on AAF. Can someone else help Raymond with an example?

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**Author:** ![matthew](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ed655f/32.png) [@matthew](https://www.ruby-forum.com/u/matthew)\
**Post date:** [December 7, 2006, 11:08am UTC](https://www.ruby-forum.com/t/re-aaf-stem-analyzer/78567/2 "2006-12-07T11:08:09Z")

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On Wed, Dec 06, 2006 at 01:46:38PM -0800, Matt S. wrote:

> > > Schnitz
> > 
> > Do you have an example of how to do this? I’m using AAF.

just specify your analyzer with the :analyzer option, i.e.

acts\_as\_ferret :analyzer =\> GermanStemmingAnalyzer.new

Here’s what my GermanStemmingAnalyzer looks like:

class GermanStemmingAnalyzer \< Ferret::Analysis::Analyzer  
include Ferret::Analysis  
def initialize(stop\_words = FULL\_GERMAN\_STOP\_WORDS)  
@stop\_words = stop\_words  
end  
def token\_stream(field, str)  
StemFilter.new(StopFilter.new(LowerCaseFilter.new(StandardTokenizer.new(str)),  
@stop\_words), ‘de’)  
end  
end

Jens

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