On Wed, Apr 21, 2010 at 3:29 PM, Mark Miller <markrmil...@gmail.com> wrote:
> > Stemming/lematization will pretty much always improve recall at the cost of > precision - that's nothing new. If you stem instead, are you going to want > documents that had run and water when you searched for running water? I just > don't see this point as an argument against lemmatization and in favor of > stemming. > > its not really supposed to be an argument in favor of stemming. I just don't think lemmatization/dictionary resources are any better. here's a test that seems to agree: http://www.clef-campaign.org/2003/WN_web/19.pdf (for languages with compound word forms, the lexical approach helps, obviously, but for stuff like English, Italian, nope) -- Robert Muir rcm...@gmail.com
