On Mon, Nov 13, 2006 at 11:06:22AM -0800, James Moore wrote:
> I'd like to get the following behavior:
> 
> 1.  Stemming.  The search is on a database of summaries of California legal
> cases.  Things like a search for "thermal image" needs to hit "thermal
> imaging."
> 
> 2.  Stop words.  Searches for "failing to instruct the jury" should come up
> with hits on a search for "fail to instruct."
> 
> 3.  Case-insensitive.
> 
> What I tried was:
> 
> class StemmedAnalyzer < Ferret::Analysis::Analyzer
>   def token_stream(field, reader)
>     return
> Ferret::Analysis::PorterStemFilter.new(Ferret::Analysis::LowerCaseTokenizer.
> new(reader))
>   end
> end
> 
> class Summary < ActiveRecord::Base
>   acts_as_ferret(:analyzer => StemmedAnalyzer.new)
> 
> But this doesn't appear to give me either stemming or stopwords.  It does
> give me basic searching (searches for exact keywords without stopwords work,
> searches with stopwords return no results).

what version of Ferret/AAF are you using ? In the most recent Ferret
(0.10.13) there is no class PorterStemFilter.

With said Feret version, the following seems to suit your needs:
http://pastie.caboo.se/22629


Jens

-- 
webit! Gesellschaft für neue Medien mbH          www.webit.de
Dipl.-Wirtschaftsingenieur Jens Krämer       [EMAIL PROTECTED]
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