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The following page has been changed by HarryWagner:
http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters

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  == Stemming ==
  
- There are two types of stemming strategies:
+ There are three types of stemming strategies:
     * [http://tartarus.org/~martin/PorterStemmer/ Porter] or Reduction 
stemming — A transforming algorithm that reduces any of the forms of a 
word such  "runs, running, ran", to its elemental root e.g., "run". Porter 
stemming must be performed ''both'' at insertion time and at query time.
     * Expansion stemming — Takes a root word and 'expands' it to all of 
its various forms — can be used ''either'' at insertion time ''or'' at 
query time.  One way to approach this is by using the [#SynonymFilter 
SynonymFilterFactory]
+    * [wiki:/Kstem KStem], an alternative to Porter for developers looking for 
a less agressive stemmer.
  
  == Analyzers ==
  

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