: "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." : : How do I specify that I want the expansion stemming instead of the porter : stemming?
there isn't anexpclit expansion stemming filter included with Solr. As far as i know the only way to accomplish expansion stemming is with a dictionary of word mappings -- which could be achieved using the SynonymFilterFactory ... i've added a note aboutthis to the wiki. -Hoss
