(e.g.ablevs.unable).Gene- rallyspeaking,thewordformsvarietycanbe duetobothinflectionalandderivationalmor- phology(alsocompounding,misspelling,proper names,foreignwordsetc.[Nakovetal.,2003b]), andthestemmingalgorithmsuseboth. Historically,theprimaryusageandmostof theresearchonstemmingwasmotivatedbyin- ...