Hi Darren, You might want to look at the KStemmer (http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters/Kstem) instead of the standard PorterStemmer. It essentially has a 'dictionary' of exception words where stemming stops if found, so in your case president won't be stemmed any further than president (but presidents will be stemmed to president). You will have to integrate it into solr yourself, but that's straightforward.
HTH Brendan On Jun 28, 2010, at 8:04 AM, Darren Govoni wrote: > Hi, > It seems to me that because the stemming does not produce > grammatically correct stems in many of the cases, > search anomalies can occur like the one I am seeing where I have a > document with "president" in it and it is returned > when I search for "preside", a different word entirely. > > Is this correct or acceptable behavior? Previous discussions here on > stemming, I was told its ok as long as all the words reduce > to the same stem, but when different words reduce to the same stem it > seems to affect search results in a "bad way". > > Darren
